"Power domain maintenance" updates from v4.9/rcar-3.5.9 branch #34
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In R-Car Gen3, some power domains is used as always on. Howerver, since the resume function in sysc driver is not implemented, it does not turned on each power domains after susped to RAM. Therefore, this patch adds the resume function in sysc driver. Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com> Signed-off-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com>
R-Car Gen3 SoC has some power domains, which are transitioned by multiple triggers. According to Hardware Manual, it is necessary to control that the state transitions do not conflict for each power domains. The patterns of conflict are below. 1. CA5x vs CA5x : Exclusion control with HW (H3 ES2.0) 2. CA5x vs 3DG : Exclusion control with HW (H3 ES2.0) 3. CA5x vs Other: Exclusion control with SW (Not implemented yet) 4. 3DG vs Other: Exclusion control with SW (already implemented) 5. Other vs Other: Exclusion control with SW (already implemented) This patch fixes pattern 3 by turning on the other power domains at always. Please note this changes causes an increase of power consumption. Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com>
R-Car Gen3 SoC has some power domains, which are transitioned by multiple triggers. According to Hardware Manual, it is necessary to control that the state transitions do not conflict for each power domains. The patterns of conflict are below. 1. CA5x vs CA5x : Exclusion control with HW (M3 ES1.1) 2. CA5x vs 3DG : Exclusion control with HW (M3 ES1.1) 3. CA5x vs Other: Exclusion control with SW (Not implemented yet) 4. 3DG vs Other: Exclusion control with SW (already implemented) 5. Other vs Other: Exclusion control with SW (already implemented) This patch fixes pattern 3 by turning on the other power domains at always. Please note this changes causes an increase of power consumption. Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com>
This was referenced Jan 24, 2018
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I'm not really sure XEN is the right place to manage power domains. |
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On the whole I agree with you. I have added description to the newly created file in Xen's PR: We have two possible candidates:
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ping... |
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I am closing this PR, an actual PR is: |
andr2000
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Mar 13, 2018
The tunnel socket tunnel->sock (struct sock) is accessed when preparing a new ppp session on a tunnel at pppol2tp_session_init. If the socket is closed by a thread while another is creating a new session, the threads race. In pppol2tp_connect, the tunnel object may be created if the pppol2tp socket is associated with the special session_id 0 and the tunnel socket is looked up using the provided fd. When handling this, pppol2tp_connect cannot sock_hold the tunnel socket to prevent it being destroyed during pppol2tp_connect since this may itself may race with the socket being destroyed. Doing sockfd_lookup in pppol2tp_connect isn't sufficient to prevent tunnel->sock going away either because a given tunnel socket fd may be reused between calls to pppol2tp_connect. Instead, have l2tp_tunnel_create sock_hold the tunnel socket before it does sockfd_put. This ensures that the tunnel's socket is always extant while the tunnel object exists. Hold a ref on the socket until the tunnel is destroyed and ensure that all tunnel destroy paths go through a common function (l2tp_tunnel_delete) since this will do the final sock_put to release the tunnel socket. Since the tunnel's socket is now guaranteed to exist if the tunnel exists, we no longer need to use sockfd_lookup via l2tp_sock_to_tunnel to derive the tunnel from the socket since this is always sk_user_data. Also, sessions no longer sock_hold the tunnel socket since sessions already hold a tunnel ref and the tunnel sock will not be freed until the tunnel is freed. Removing these sock_holds in l2tp_session_register avoids a possible sock leak in the pppol2tp_connect error path if l2tp_session_register succeeds but attaching a ppp channel fails. The pppol2tp_connect error path could have been fixed instead and have the sock ref dropped when the session is freed, but doing a sock_put of the tunnel socket when the session is freed would require a new session_free callback. It is simpler to just remove the sock_hold of the tunnel socket in l2tp_session_register, now that the tunnel socket lifetime is guaranteed. Finally, some init code in l2tp_tunnel_create is reordered to ensure that the new tunnel object's refcount is set and the tunnel socket ref is taken before the tunnel socket destructor callbacks are set. kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Modules linked in: CPU: 0 PID: 4360 Comm: syzbot_19c09769 Not tainted 4.16.0-rc2+ xen-troops#34 Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 RIP: 0010:pppol2tp_session_init+0x1d6/0x500 RSP: 0018:ffff88001377fb40 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: ffff88001636a940 RCX: ffffffff84836c1d RDX: 0000000000000045 RSI: 0000000055976744 RDI: 0000000000000228 RBP: ffff88001377fb60 R08: ffffffff84836bc8 R09: 0000000000000002 R10: ffff88001377fab8 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88001636aac8 R14: ffff8800160f81c0 R15: 1ffff100026eff76 FS: 00007ffb3ea66700(0000) GS:ffff88001a400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020e77000 CR3: 0000000016261000 CR4: 00000000000006f0 Call Trace: pppol2tp_connect+0xd18/0x13c0 ? pppol2tp_session_create+0x170/0x170 ? __might_fault+0x115/0x1d0 ? lock_downgrade+0x860/0x860 ? __might_fault+0xe5/0x1d0 ? security_socket_connect+0x8e/0xc0 SYSC_connect+0x1b6/0x310 ? SYSC_bind+0x280/0x280 ? __do_page_fault+0x5d1/0xca0 ? up_read+0x1f/0x40 ? __do_page_fault+0x3c8/0xca0 SyS_connect+0x29/0x30 ? SyS_accept+0x40/0x40 do_syscall_64+0x1e0/0x730 ? trace_hardirqs_off_thunk+0x1a/0x1c entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x7ffb3e376259 RSP: 002b:00007ffeda4f6508 EFLAGS: 00000202 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000020e77012 RCX: 00007ffb3e376259 RDX: 000000000000002e RSI: 0000000020e77000 RDI: 0000000000000004 RBP: 00007ffeda4f6540 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000400b60 R13: 00007ffeda4f6660 R14: 0000000000000000 R15: 0000000000000000 Code: 80 3d b0 ff 06 02 00 0f 84 07 02 00 00 e8 13 d6 db fc 49 8d bc 24 28 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f a 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 02 00 00 4d 8b a4 24 28 02 00 00 e8 13 16 Fixes: 80d84ef ("l2tp: prevent l2tp_tunnel_delete racing with userspace close") Signed-off-by: James Chapman <jchapman@katalix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
andr2000
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Mar 28, 2018
Garbage supplied by user will cause to UCMA module provide zero memory size for memcpy(), because it wasn't checked, it will produce unpredictable results in rdma_resolve_addr(). [ 42.873814] BUG: KASAN: null-ptr-deref in rdma_resolve_addr+0xc8/0xfb0 [ 42.874816] Write of size 28 at addr 00000000000000a0 by task resaddr/1044 [ 42.876765] [ 42.876960] CPU: 1 PID: 1044 Comm: resaddr Not tainted 4.16.0-rc1-00057-gaa56a5293d7e xen-troops#34 [ 42.877840] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.11.0-0-g63451fca13-prebuilt.qemu-project.org 04/01/2014 [ 42.879691] Call Trace: [ 42.880236] dump_stack+0x5c/0x77 [ 42.880664] kasan_report+0x163/0x380 [ 42.881354] ? rdma_resolve_addr+0xc8/0xfb0 [ 42.881864] memcpy+0x34/0x50 [ 42.882692] rdma_resolve_addr+0xc8/0xfb0 [ 42.883366] ? deref_stack_reg+0x88/0xd0 [ 42.883856] ? vsnprintf+0x31a/0x770 [ 42.884686] ? rdma_bind_addr+0xc40/0xc40 [ 42.885327] ? num_to_str+0x130/0x130 [ 42.885773] ? deref_stack_reg+0x88/0xd0 [ 42.886217] ? __read_once_size_nocheck.constprop.6+0x10/0x10 [ 42.887698] ? unwind_get_return_address_ptr+0x50/0x50 [ 42.888302] ? replace_slot+0x147/0x170 [ 42.889176] ? delete_node+0x12c/0x340 [ 42.890223] ? __radix_tree_lookup+0xa9/0x160 [ 42.891196] ? ucma_resolve_ip+0xb7/0x110 [ 42.891917] ucma_resolve_ip+0xb7/0x110 [ 42.893003] ? ucma_resolve_addr+0x190/0x190 [ 42.893531] ? _copy_from_user+0x5e/0x90 [ 42.894204] ucma_write+0x174/0x1f0 [ 42.895162] ? ucma_resolve_route+0xf0/0xf0 [ 42.896309] ? dequeue_task_fair+0x67e/0xd90 [ 42.897192] ? put_prev_entity+0x7d/0x170 [ 42.897870] ? ring_buffer_record_is_on+0xd/0x20 [ 42.898439] ? tracing_record_taskinfo_skip+0x20/0x50 [ 42.899686] __vfs_write+0xc4/0x350 [ 42.900142] ? kernel_read+0xa0/0xa0 [ 42.900602] ? firmware_map_remove+0xdf/0xdf [ 42.901135] ? do_task_dead+0x5d/0x60 [ 42.901598] ? do_exit+0xcc6/0x1220 [ 42.902789] ? __fget+0xa8/0xf0 [ 42.903190] vfs_write+0xf7/0x280 [ 42.903600] SyS_write+0xa1/0x120 [ 42.904206] ? SyS_read+0x120/0x120 [ 42.905710] ? compat_start_thread+0x60/0x60 [ 42.906423] ? SyS_read+0x120/0x120 [ 42.908716] do_syscall_64+0xeb/0x250 [ 42.910760] entry_SYSCALL_64_after_hwframe+0x21/0x86 [ 42.912735] RIP: 0033:0x7f138b0afe99 [ 42.914734] RSP: 002b:00007f138b799e98 EFLAGS: 00000287 ORIG_RAX: 0000000000000001 [ 42.917134] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f138b0afe99 [ 42.919487] RDX: 000000000000002e RSI: 0000000020000c40 RDI: 0000000000000004 [ 42.922393] RBP: 00007f138b799ec0 R08: 00007f138b79a700 R09: 0000000000000000 [ 42.925266] R10: 00007f138b79a700 R11: 0000000000000287 R12: 00007f138b799fc0 [ 42.927570] R13: 0000000000000000 R14: 00007ffdbae757c0 R15: 00007f138b79a9c0 [ 42.930047] [ 42.932681] Disabling lock debugging due to kernel taint [ 42.934795] BUG: unable to handle kernel NULL pointer dereference at 00000000000000a0 [ 42.936939] IP: memcpy_erms+0x6/0x10 [ 42.938864] PGD 80000001bea92067 P4D 80000001bea92067 PUD 1bea96067 PMD 0 [ 42.941576] Oops: 0002 [#1] SMP KASAN PTI [ 42.943952] CPU: 1 PID: 1044 Comm: resaddr Tainted: G B 4.16.0-rc1-00057-gaa56a5293d7e xen-troops#34 [ 42.946964] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.11.0-0-g63451fca13-prebuilt.qemu-project.org 04/01/2014 [ 42.952336] RIP: 0010:memcpy_erms+0x6/0x10 [ 42.954707] RSP: 0018:ffff8801c8b479c8 EFLAGS: 00010286 [ 42.957227] RAX: 00000000000000a0 RBX: ffff8801c8b47ba0 RCX: 000000000000001c [ 42.960543] RDX: 000000000000001c RSI: ffff8801c8b47bbc RDI: 00000000000000a0 [ 42.963867] RBP: ffff8801c8b47b60 R08: 0000000000000000 R09: ffffed0039168ed1 [ 42.967303] R10: 0000000000000001 R11: ffffed0039168ed0 R12: ffff8801c8b47bbc [ 42.970685] R13: 00000000000000a0 R14: 1ffff10039168f4a R15: 0000000000000000 [ 42.973631] FS: 00007f138b79a700(0000) GS:ffff8801e5d00000(0000) knlGS:0000000000000000 [ 42.976831] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.979239] CR2: 00000000000000a0 CR3: 00000001be908002 CR4: 00000000003606a0 [ 42.982060] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.984877] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.988033] Call Trace: [ 42.990487] rdma_resolve_addr+0xc8/0xfb0 [ 42.993202] ? deref_stack_reg+0x88/0xd0 [ 42.996055] ? vsnprintf+0x31a/0x770 [ 42.998707] ? rdma_bind_addr+0xc40/0xc40 [ 43.000985] ? num_to_str+0x130/0x130 [ 43.003410] ? deref_stack_reg+0x88/0xd0 [ 43.006302] ? __read_once_size_nocheck.constprop.6+0x10/0x10 [ 43.008780] ? unwind_get_return_address_ptr+0x50/0x50 [ 43.011178] ? replace_slot+0x147/0x170 [ 43.013517] ? delete_node+0x12c/0x340 [ 43.016019] ? __radix_tree_lookup+0xa9/0x160 [ 43.018755] ? ucma_resolve_ip+0xb7/0x110 [ 43.021270] ucma_resolve_ip+0xb7/0x110 [ 43.023968] ? ucma_resolve_addr+0x190/0x190 [ 43.026312] ? _copy_from_user+0x5e/0x90 [ 43.029384] ucma_write+0x174/0x1f0 [ 43.031861] ? ucma_resolve_route+0xf0/0xf0 [ 43.034782] ? dequeue_task_fair+0x67e/0xd90 [ 43.037483] ? put_prev_entity+0x7d/0x170 [ 43.040215] ? ring_buffer_record_is_on+0xd/0x20 [ 43.042990] ? tracing_record_taskinfo_skip+0x20/0x50 [ 43.045595] __vfs_write+0xc4/0x350 [ 43.048624] ? kernel_read+0xa0/0xa0 [ 43.051604] ? firmware_map_remove+0xdf/0xdf [ 43.055379] ? do_task_dead+0x5d/0x60 [ 43.058000] ? do_exit+0xcc6/0x1220 [ 43.060783] ? __fget+0xa8/0xf0 [ 43.063133] vfs_write+0xf7/0x280 [ 43.065677] SyS_write+0xa1/0x120 [ 43.068647] ? SyS_read+0x120/0x120 [ 43.071179] ? compat_start_thread+0x60/0x60 [ 43.074025] ? SyS_read+0x120/0x120 [ 43.076705] do_syscall_64+0xeb/0x250 [ 43.079006] entry_SYSCALL_64_after_hwframe+0x21/0x86 [ 43.081606] RIP: 0033:0x7f138b0afe99 [ 43.083679] RSP: 002b:00007f138b799e98 EFLAGS: 00000287 ORIG_RAX: 0000000000000001 [ 43.086802] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f138b0afe99 [ 43.089989] RDX: 000000000000002e RSI: 0000000020000c40 RDI: 0000000000000004 [ 43.092866] RBP: 00007f138b799ec0 R08: 00007f138b79a700 R09: 0000000000000000 [ 43.096233] R10: 00007f138b79a700 R11: 0000000000000287 R12: 00007f138b799fc0 [ 43.098913] R13: 0000000000000000 R14: 00007ffdbae757c0 R15: 00007f138b79a9c0 [ 43.101809] Code: 90 90 90 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 <f3> a4 c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38 [ 43.107950] RIP: memcpy_erms+0x6/0x10 RSP: ffff8801c8b479c8 Reported-by: <syzbot+1d8c43206853b369d00c@syzkaller.appspotmail.com> Fixes: 7521663 ("RDMA/cma: Export rdma cm interface to userspace") Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
andr2000
pushed a commit
to andr2000/linux
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this pull request
May 23, 2018
syzbot caught an infinite recursion in nsh_gso_segment().
Problem here is that we need to make sure the NSH header is of
reasonable length.
BUG: MAX_LOCK_DEPTH too low!
turning off the locking correctness validator.
depth: 48 max: 48!
48 locks held by syz-executor0/10189:
#0: (ptrval) (rcu_read_lock_bh){....}, at: __dev_queue_xmit+0x30f/0x34c0 net/core/dev.c:3517
#1: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
#1: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
#2: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
#2: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
#3: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
#3: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#4: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#4: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#5: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#5: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#6: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#6: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#7: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#7: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#8: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#8: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#9: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#9: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#10: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#10: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#11: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#11: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#12: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#12: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#13: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#13: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#14: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#14: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#15: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#15: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#16: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#16: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#17: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#17: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#18: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#18: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#19: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#19: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#20: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#20: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#21: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#21: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#22: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#22: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#23: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#23: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#24: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#24: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#25: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#25: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#26: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#26: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#27: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#27: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#28: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#28: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#29: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#29: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#30: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#30: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#31: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#31: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
dccp_close: ABORT with 65423 bytes unread
xen-troops#32: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#32: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#33: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#33: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#34: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#34: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#35: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#35: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#36: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#36: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#37: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#37: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#38: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#38: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#39: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#39: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#40: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#40: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#41: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#41: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#42: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#42: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#43: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#43: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#44: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#44: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#45: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#45: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#46: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#46: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
xen-troops#47: (ptrval) (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2080 [inline]
xen-troops#47: (ptrval) (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787
INFO: lockdep is turned off.
CPU: 1 PID: 10189 Comm: syz-executor0 Not tainted 4.17.0-rc2+ xen-troops#26
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1b9/0x294 lib/dump_stack.c:113
__lock_acquire+0x1788/0x5140 kernel/locking/lockdep.c:3449
lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3920
rcu_lock_acquire include/linux/rcupdate.h:246 [inline]
rcu_read_lock include/linux/rcupdate.h:632 [inline]
skb_mac_gso_segment+0x25b/0x720 net/core/dev.c:2789
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
nsh_gso_segment+0x405/0xb60 net/nsh/nsh.c:107
skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792
__skb_gso_segment+0x3bb/0x870 net/core/dev.c:2865
skb_gso_segment include/linux/netdevice.h:4025 [inline]
validate_xmit_skb+0x54d/0xd90 net/core/dev.c:3118
validate_xmit_skb_list+0xbf/0x120 net/core/dev.c:3168
sch_direct_xmit+0x354/0x11e0 net/sched/sch_generic.c:312
qdisc_restart net/sched/sch_generic.c:399 [inline]
__qdisc_run+0x741/0x1af0 net/sched/sch_generic.c:410
__dev_xmit_skb net/core/dev.c:3243 [inline]
__dev_queue_xmit+0x28ea/0x34c0 net/core/dev.c:3551
dev_queue_xmit+0x17/0x20 net/core/dev.c:3616
packet_snd net/packet/af_packet.c:2951 [inline]
packet_sendmsg+0x40f8/0x6070 net/packet/af_packet.c:2976
sock_sendmsg_nosec net/socket.c:629 [inline]
sock_sendmsg+0xd5/0x120 net/socket.c:639
__sys_sendto+0x3d7/0x670 net/socket.c:1789
__do_sys_sendto net/socket.c:1801 [inline]
__se_sys_sendto net/socket.c:1797 [inline]
__x64_sys_sendto+0xe1/0x1a0 net/socket.c:1797
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Fixes: c411ed8 ("nsh: add GSO support")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jiri Benc <jbenc@redhat.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Acked-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
andr2000
pushed a commit
to andr2000/linux
that referenced
this pull request
May 23, 2018
syzbot reported a use-after-free in tls_sk_proto_close Add a boolean value to cleanup a bit this function. BUG: KASAN: use-after-free in tls_sk_proto_close+0x8ab/0x9c0 net/tls/tls_main.c:297 Read of size 1 at addr ffff8801ae40a858 by task syz-executor363/4503 CPU: 0 PID: 4503 Comm: syz-executor363 Not tainted 4.17.0-rc3+ xen-troops#34 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report.c:430 tls_sk_proto_close+0x8ab/0x9c0 net/tls/tls_main.c:297 inet_release+0x104/0x1f0 net/ipv4/af_inet.c:427 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:460 sock_release+0x96/0x1b0 net/socket.c:594 sock_close+0x16/0x20 net/socket.c:1149 __fput+0x34d/0x890 fs/file_table.c:209 ____fput+0x15/0x20 fs/file_table.c:243 task_work_run+0x1e4/0x290 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x1aee/0x2730 kernel/exit.c:865 do_group_exit+0x16f/0x430 kernel/exit.c:968 get_signal+0x886/0x1960 kernel/signal.c:2469 do_signal+0x98/0x2040 arch/x86/kernel/signal.c:810 exit_to_usermode_loop+0x28a/0x310 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:265 [inline] do_syscall_64+0x6ac/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4457b9 RSP: 002b:00007fdf4d766da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00000000006dac3c RCX: 00000000004457b9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000006dac3c RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac38 R13: 3692738801137283 R14: 6bf92c39443c4c1d R15: 0000000000000006 Allocated by task 4498: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553 kmem_cache_alloc_trace+0x152/0x780 mm/slab.c:3620 kmalloc include/linux/slab.h:512 [inline] kzalloc include/linux/slab.h:701 [inline] create_ctx net/tls/tls_main.c:521 [inline] tls_init+0x1f9/0xb00 net/tls/tls_main.c:633 tcp_set_ulp+0x1bc/0x520 net/ipv4/tcp_ulp.c:153 do_tcp_setsockopt.isra.39+0x44a/0x2600 net/ipv4/tcp.c:2588 tcp_setsockopt+0xc1/0xe0 net/ipv4/tcp.c:2893 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3039 __sys_setsockopt+0x1bd/0x390 net/socket.c:1903 __do_sys_setsockopt net/socket.c:1914 [inline] __se_sys_setsockopt net/socket.c:1911 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1911 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 4503: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3498 [inline] kfree+0xd9/0x260 mm/slab.c:3813 tls_sw_free_resources+0x2a3/0x360 net/tls/tls_sw.c:1037 tls_sk_proto_close+0x67c/0x9c0 net/tls/tls_main.c:288 inet_release+0x104/0x1f0 net/ipv4/af_inet.c:427 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:460 sock_release+0x96/0x1b0 net/socket.c:594 sock_close+0x16/0x20 net/socket.c:1149 __fput+0x34d/0x890 fs/file_table.c:209 ____fput+0x15/0x20 fs/file_table.c:243 task_work_run+0x1e4/0x290 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x1aee/0x2730 kernel/exit.c:865 do_group_exit+0x16f/0x430 kernel/exit.c:968 get_signal+0x886/0x1960 kernel/signal.c:2469 do_signal+0x98/0x2040 arch/x86/kernel/signal.c:810 exit_to_usermode_loop+0x28a/0x310 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:265 [inline] do_syscall_64+0x6ac/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8801ae40a800 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 88 bytes inside of 256-byte region [ffff8801ae40a800, ffff8801ae40a900) The buggy address belongs to the page: page:ffffea0006b90280 count:1 mapcount:0 mapping:ffff8801ae40a080 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffff8801ae40a080 0000000000000000 000000010000000c raw: ffffea0006bea9e0 ffffea0006bc94a0 ffff8801da8007c0 0000000000000000 page dumped because: kasan: bad access detected Fixes: dd0bed1 ("tls: support for Inline tls record") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Atul Gupta <atul.gupta@chelsio.com> Cc: Steve Wise <swise@opengridcomputing.com> Cc: Ilya Lesokhin <ilyal@mellanox.com> Cc: Aviad Yehezkel <aviadye@mellanox.com> Cc: Dave Watson <davejwatson@fb.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net>
andr2000
pushed a commit
to andr2000/linux
that referenced
this pull request
Nov 27, 2018
Increase kasan instrumented kernel stack size from 32k to 64k. Other architectures seems to get away with just doubling kernel stack size under kasan, but on s390 this appears to be not enough due to bigger frame size. The particular pain point is kasan inlined checks (CONFIG_KASAN_INLINE vs CONFIG_KASAN_OUTLINE). With inlined checks one particular case hitting stack overflow is fs sync on xfs filesystem: #0 [9a0681e8] 704 bytes check_usage at 34b1fc #1 [9a0684a8] 432 bytes check_usage at 34c710 #2 [9a068658] 1048 bytes validate_chain at 35044a #3 [9a068a70] 312 bytes __lock_acquire at 3559fe xen-troops#4 [9a068ba8] 440 bytes lock_acquire at 3576ee xen-troops#5 [9a068d60] 104 bytes _raw_spin_lock at 21b44e0 xen-troops#6 [9a068dc8] 1992 bytes enqueue_entity at 2dbf72 xen-troops#7 [9a069590] 1496 bytes enqueue_task_fair at 2df5f0 xen-troops#8 [9a069b68] 64 bytes ttwu_do_activate at 28f438 xen-troops#9 [9a069ba8] 552 bytes try_to_wake_up at 298c4c xen-troops#10 [9a069dd0] 168 bytes wake_up_worker at 23f97c xen-troops#11 [9a069e78] 200 bytes insert_work at 23fc2e xen-troops#12 [9a069f40] 648 bytes __queue_work at 2487c0 xen-troops#13 [9a06a1c8] 200 bytes __queue_delayed_work at 24db28 xen-troops#14 [9a06a290] 248 bytes mod_delayed_work_on at 24de84 xen-troops#15 [9a06a388] 24 bytes kblockd_mod_delayed_work_on at 153e2a0 xen-troops#16 [9a06a3a] 288 bytes __blk_mq_delay_run_hw_queue at 158168c xen-troops#17 [9a06a4c0] 192 bytes blk_mq_run_hw_queue at 1581a3c xen-troops#18 [9a06a58] 184 bytes blk_mq_sched_insert_requests at 15a2192 xen-troops#19 [9a06a638] 1024 bytes blk_mq_flush_plug_list at 1590f3a xen-troops#20 [9a06aa38] 704 bytes blk_flush_plug_list at 1555028 xen-troops#21 [9a06acf8] 320 bytes schedule at 219e476 xen-troops#22 [9a06ae38] 760 bytes schedule_timeout at 21b0aac xen-troops#23 [9a06b130] 408 bytes wait_for_common at 21a1706 xen-troops#24 [9a06b2c8] 360 bytes xfs_buf_iowait at fa1540 xen-troops#25 [9a06b430] 256 bytes __xfs_buf_submit at fadae6 xen-troops#26 [9a06b530] 264 bytes xfs_buf_read_map at fae3f6 xen-troops#27 [9a06b638] 656 bytes xfs_trans_read_buf_map at 10ac9a8 xen-troops#28 [9a06b8c] 304 bytes xfs_btree_kill_root at e72426 xen-troops#29 [9a06b9f8] 288 bytes xfs_btree_lookup_get_block at e7bc5e xen-troops#30 [9a06bb18] 624 bytes xfs_btree_lookup at e7e1a6 xen-troops#31 [9a06bd88] 2664 bytes xfs_alloc_ag_vextent_near at dfa070 xen-troops#32 [9a06c7f0] 144 bytes xfs_alloc_ag_vextent at dff3ca xen-troops#33 [9a06c880] 1128 bytes xfs_alloc_vextent at e05fce xen-troops#34 [9a06cce8] 584 bytes xfs_bmap_btalloc at e58342 xen-troops#35 [9a06cf30] 1336 bytes xfs_bmapi_write at e618de xen-troops#36 [9a06d468] 776 bytes xfs_iomap_write_allocate at ff678e xen-troops#37 [9a06d770] 720 bytes xfs_map_blocks at f82af8 xen-troops#38 [9a06da40] 928 bytes xfs_writepage_map at f83cd6 xen-troops#39 [9a06dde0] 320 bytes xfs_do_writepage at f85872 xen-troops#40 [9a06df20] 1320 bytes write_cache_pages at 73dfe8 xen-troops#41 [9a06e448] 208 bytes xfs_vm_writepages at f7f892 xen-troops#42 [9a06e518] 88 bytes do_writepages at 73fe6a xen-troops#43 [9a06e57] 872 bytes __writeback_single_inode at a20cb6 xen-troops#44 [9a06e8d8] 664 bytes writeback_sb_inodes at a23be2 xen-troops#45 [9a06eb70] 296 bytes __writeback_inodes_wb at a242e0 xen-troops#46 [9a06ec98] 928 bytes wb_writeback at a2500e xen-troops#47 [9a06f038] 848 bytes wb_do_writeback at a260ae xen-troops#48 [9a06f388] 536 bytes wb_workfn at a28228 xen-troops#49 [9a06f5a0] 1088 bytes process_one_work at 24a234 xen-troops#50 [9a06f9e0] 1120 bytes worker_thread at 24ba26 xen-troops#51 [9a06fe40] 104 bytes kthread at 26545a xen-troops#52 [9a06fea] kernel_thread_starter at 21b6b62 To be able to increase the stack size to 64k reuse LLILL instruction in __switch_to function to load 64k - STACK_FRAME_OVERHEAD - __PT_SIZE (65192) value as unsigned. Reported-by: Benjamin Block <bblock@linux.ibm.com> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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These patches were cherry-picked from v4.9/rcar-3.5.9 branch to be aligned with PR to Xen which turns on A3xx power domains some IPMMU caches belong to. Without these patches Linux will disable all "unused" from its point of view power domains, where A3xx power domains are among them.
This PR should go in with the following PRs:
IPMMU-VMSA updates
xen-troops/xen#105
dom0.dts/domd.dts: Remove "power-domains" property from SDHI2 node
xen-troops/meta-xt-prod-ces2018#151