# Test that we preserve large prefix if we have task context.
TITLE: WARNING in xfrm_state_fini

[  602.265237][T27130] FAULT_INJECTION: forcing a failure.
[  602.265237][T27130] name failslab, interval 1, probability 0, space 0, times 0
[  602.267142][T27130] CPU: 1 PID: 27130 Comm: syz-executor2 Not tainted 4.20.0-next-20190102+ #5
[  602.268396][T27130] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[  602.269685][T27130] Call Trace:
[  602.270155][T27130]  dump_stack+0x1db/0x2d0
[  602.272981][T27130]  should_fail.cold+0xa/0x14
[  602.277933][T27130]  __should_failslab+0x121/0x190
[  602.278628][T27130]  should_failslab+0x9/0x14
[  602.279253][T27130]  kmem_cache_alloc_trace+0x2d1/0x760
[  602.281722][T27130]  netdevice_event+0x353/0x1100
[  602.290969][T27130]  notifier_call_chain+0x179/0x380
[  602.294716][T27130]  raw_notifier_call_chain+0x2e/0x40
[  602.295450][T27130]  call_netdevice_notifiers_info+0x3f/0x90
[  602.345149][T27130]  __x64_sys_ioctl+0x73/0xb0
[  602.345810][T27130]  do_syscall_64+0x1a3/0x800
[  602.349549][T27130]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  602.350379][T27130] RIP: 0033:0x4576a9
[  602.350938][T27130] Code: 4d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 1b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
[  602.353693][T27130] RSP: 002b:00007f6d6741ec88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  602.354896][T27130] RAX: ffffffffffffffda RBX: 000000000071bfa0 RCX: 00000000004576a9
[  602.356022][T27130] RDX: 0000000020000240 RSI: 0000000000008990 RDI: 0000000000000003
[  602.357119][T27130] RBP: 00007f6d6741eca0 R08: 0000000000000000 R09: 0000000000000000
[  602.358176][T27130] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6d6741f6d4
[  602.359249][T27130] R13: 00000000004aa309 R14: 00000000006e90f0 R15: 0000000000000004
[  560.713151][T27130] WARNING: CPU: 2 PID: 1194 at net/xfrm/xfrm_state.c:2381 xfrm_state_fini+0x440/0x5c0
[  560.714556][T27130] Kernel panic - not syncing: panic_on_warn set ...
[  560.715572][T27130] CPU: 2 PID: 1194 Comm: kworker/u12:4 Not tainted 4.20.0-next-20190102+ #5
[  560.716935][T27130] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[  560.718554][T27130] Workqueue: netns cleanup_net
[  560.719399][T27130] Call Trace:
[  560.719962][T27130]  dump_stack+0x1db/0x2d0
[  560.731421][T27130]  do_invalid_op+0x37/0x50
[  560.732696][T27130]  invalid_op+0x14/0x20
[  560.733271][T27130] RIP: 0010:xfrm_state_fini+0x440/0x5c0
[  560.736699][T27130] RSP: 0018:ffff888068c37718 EFLAGS: 00010293
[  560.737543][T27130] RAX: ffff888068c28300 RBX: ffff88805fec4340 RCX: 0000000000000000
[  560.738638][T27130] RDX: 0000000000000000 RSI: ffffffff86c36c50 RDI: 1ffff1100d186ee9
[  560.739795][T27130] RBP: ffff888068c37810 R08: 0000000000000007 R09: ffff888068c28bf0
[  560.740936][T27130] R10: ffff888068c28300 R11: 0000000000000000 R12: 1ffff1100d186ee5
[  560.742054][T27130] R13: ffff888068c377e8 R14: ffff88805fec5e40 R15: ffff88801f9cb0e0
[  560.747522][T27130]  xfrm_net_exit+0x25/0x70
[  560.748148][T27130]  ops_exit_list.isra.0+0xb0/0x160
[  560.748885][T27130]  cleanup_net+0x51d/0xb10
[  560.753239][T27130]  process_one_work+0xd0c/0x1ce0
[  560.765456][T27130]  worker_thread+0x143/0x14a0
[  560.777603][T27130]  kthread+0x357/0x430
[  560.779733][T27130]  ret_from_fork+0x3a/0x50
[  560.780962][T27130] Dumping ftrace buffer:
[  560.781955][T27130]    (ftrace buffer empty)
[  560.782576][T27130] Kernel Offset: disabled
[  560.783204][T27130] Rebooting in 86400 seconds..

REPORT:
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 27130 Comm: syz-executor2 Not tainted 4.20.0-next-20190102+ #5
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
Call Trace:
 dump_stack+0x1db/0x2d0
 should_fail.cold+0xa/0x14
 __should_failslab+0x121/0x190
 should_failslab+0x9/0x14
 kmem_cache_alloc_trace+0x2d1/0x760
 netdevice_event+0x353/0x1100
 notifier_call_chain+0x179/0x380
 raw_notifier_call_chain+0x2e/0x40
 call_netdevice_notifiers_info+0x3f/0x90
 __x64_sys_ioctl+0x73/0xb0
 do_syscall_64+0x1a3/0x800
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4576a9
Code: 4d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 1b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f6d6741ec88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000071bfa0 RCX: 00000000004576a9
RDX: 0000000020000240 RSI: 0000000000008990 RDI: 0000000000000003
RBP: 00007f6d6741eca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6d6741f6d4
R13: 00000000004aa309 R14: 00000000006e90f0 R15: 0000000000000004
WARNING: CPU: 2 PID: 1194 at net/xfrm/xfrm_state.c:2381 xfrm_state_fini+0x440/0x5c0
Kernel panic - not syncing: panic_on_warn set ...
CPU: 2 PID: 1194 Comm: kworker/u12:4 Not tainted 4.20.0-next-20190102+ #5
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
Workqueue: netns cleanup_net
Call Trace:
 dump_stack+0x1db/0x2d0
 do_invalid_op+0x37/0x50
 invalid_op+0x14/0x20
RIP: 0010:xfrm_state_fini+0x440/0x5c0
RSP: 0018:ffff888068c37718 EFLAGS: 00010293
RAX: ffff888068c28300 RBX: ffff88805fec4340 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff86c36c50 RDI: 1ffff1100d186ee9
RBP: ffff888068c37810 R08: 0000000000000007 R09: ffff888068c28bf0
R10: ffff888068c28300 R11: 0000000000000000 R12: 1ffff1100d186ee5
R13: ffff888068c377e8 R14: ffff88805fec5e40 R15: ffff88801f9cb0e0
 xfrm_net_exit+0x25/0x70
 ops_exit_list.isra.0+0xb0/0x160
 cleanup_net+0x51d/0xb10
 process_one_work+0xd0c/0x1ce0
 worker_thread+0x143/0x14a0
 kthread+0x357/0x430
 ret_from_fork+0x3a/0x50
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..