watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.5:9514]
Modules linked in:
irq event stamp: 4536185
hardirqs last enabled at (4536184): [<ffffffff87400976>] restore_regs_and_return_to_kernel+0x0/0x2a
hardirqs last disabled at (4536185): [<ffffffff874018ae>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793
softirqs last enabled at (106774): [<ffffffff8760068b>] __do_softirq+0x68b/0x9ff kernel/softirq.c:314
softirqs last disabled at (107459): [<ffffffff81321d13>] invoke_softirq kernel/softirq.c:368 [inline]
softirqs last disabled at (107459): [<ffffffff81321d13>] irq_exit+0x193/0x240 kernel/softirq.c:409
CPU: 0 PID: 9514 Comm: syz-executor.5 Not tainted 4.14.257-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880726e4580 task.stack: ffff888072720000
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:42 [inline]
RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:276 [inline]
RIP: 0010:deref_stack_reg+0xaa/0x1a0 arch/x86/kernel/unwind_orc.c:286
RSP: 0018:ffff8880ba407778 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: 1ffff11017480ef0 RCX: ffffffff8a6d218c
RDX: ffff8880ba4078c0 RSI: ffff8880ba407f28 RDI: ffff8880ba4078c0
RBP: ffff8880ba407f28 R08: ffffffff8a6d2190 R09: ffffffff8a6d2191
R10: 0000000000010d4a R11: 0000000000000001 R12: ffff8880ba4078b0
R13: ffff8880ba4078f8 R14: ffff8880ba400000 R15: ffff8880ba4078b0
FS: 00007ffaa0be9700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 0000000094012000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
unwind_next_frame+0xc98/0x17d0 arch/x86/kernel/unwind_orc.c:425
__save_stack_trace+0x90/0x160 arch/x86/kernel/stacktrace.c:44
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc_node mm/slab.c:3333 [inline]
kmem_cache_alloc_node_trace+0x13d/0x400 mm/slab.c:3659
__do_kmalloc_node mm/slab.c:3681 [inline]
__kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3696
__kmalloc_reserve net/core/skbuff.c:137 [inline]
__alloc_skb+0x96/0x510 net/core/skbuff.c:205
alloc_skb include/linux/skbuff.h:980 [inline]
new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67
aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:427 [inline]
aoecmd_cfg+0x15b/0x560 drivers/block/aoe/aoecmd.c:1392
discover_timer+0xc5/0x160 drivers/block/aoe/aoemain.c:44
call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280
expire_timers+0x232/0x4d0 kernel/time/timer.c:1319
__run_timers kernel/time/timer.c:1637 [inline]
run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650
__do_softirq+0x24d/0x9ff kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x193/0x240 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:638 [inline]
smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106
apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
</IRQ>
RIP: 0010:clear_page_erms+0x7/0x10 arch/x86/lib/clear_page_64.S:50
RSP: 0018:ffff888072727620 EFLAGS: 00010246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffff888000000000 RCX: 0000000000000540
RDX: 1ffff1100e4dcaf7 RSI: 00000000ffffffff RDI: ffff888070e19ac0
RBP: 0000000000000019 R08: 0000000000037b28 R09: 0000000000000008
R10: ffffffffffffffe8 R11: ffff8880726e4580 R12: ffff8880726e4580
R13: ffffea0001c38000 R14: 0000000000000000 R15: dffffc0000000000
clear_page arch/x86/include/asm/page_64.h:45 [inline]
clear_user_page arch/x86/include/asm/page.h:28 [inline]
clear_user_highpage include/linux/highmem.h:137 [inline]
clear_huge_page+0x114/0x7b0 mm/memory.c:4730
__do_huge_pmd_anonymous_page mm/huge_memory.c:574 [inline]
do_huge_pmd_anonymous_page+0x93b/0x1700 mm/huge_memory.c:731
create_huge_pmd mm/memory.c:3984 [inline]
__handle_mm_fault+0x2ac4/0x4620 mm/memory.c:4187
handle_mm_fault+0x455/0x9c0 mm/memory.c:4253
__do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442
page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:__clear_user+0x3d/0x60 arch/x86/lib/usercopy_64.c:23
RSP: 0018:ffff888072727a18 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 000000000000008b
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000020bfffff
RBP: 0000000020bff457 R08: ffffffff8b99dbe8 R09: 0000000000000000
R10: 0000000000000000 R11: ffff8880726e4580 R12: 0000000020bff457
R13: 0000000020c00457 R14: 0000000000000000 R15: 0000000000001000
clear_user+0x74/0xb0 arch/x86/lib/usercopy_64.c:53
iov_iter_zero+0x1c7/0xcc0 lib/iov_iter.c:776
read_iter_zero+0xb8/0x180 drivers/char/mem.c:710
call_read_iter include/linux/fs.h:1774 [inline]
do_iter_readv_writev+0x41d/0x5f0 fs/read_write.c:673
do_iter_read+0x21d/0x5b0 fs/read_write.c:917
vfs_readv+0xc8/0x120 fs/read_write.c:981
do_readv+0xfc/0x2c0 fs/read_write.c:1014
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7ffaa2273e99
RSP: 002b:00007ffaa0be9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000013
RAX: ffffffffffffffda RBX: 00007ffaa2386f60 RCX: 00007ffaa2273e99
RDX: 000000000000000a RSI: 0000000020001900 RDI: 0000000000000005
RBP: 00007ffaa22cdff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcc0e5468f R14: 00007ffaa0be9300 R15: 0000000000022000
Code: fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 e6 00 00 00 49 8d 7c 24 10 4d 8b 74 24 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa <48> c1 ea 03 80 3c 02 00 0f 85 b7 00 00 00 49 39 ee 49 8b 44 24
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9546 Comm: syz-executor.3 Not tainted 4.14.257-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888072a60680 task.stack: ffff888072a68000
RIP: 0010:match_held_lock kernel/locking/lockdep.c:3559 [inline]
RIP: 0010:find_held_lock+0x37/0x210 kernel/locking/lockdep.c:3603
RSP: 0018:ffff8880ba507a28 EFLAGS: 00000002
RAX: dffffc0000000000 RBX: 0000000000000004 RCX: ffff8880ba507a98
RDX: ffff888072a60f90 RSI: ffffffff88f77980 RDI: ffff888072a60f90
RBP: ffffffff88f77980 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff888072a60680 R12: ffff888072a60f80
R13: 0000000000000003 R14: ffff8880ba507a98 R15: ffffffff88f77980
FS: 00007f09da853700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020fb1000 CR3: 00000000aba99000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
__lock_release kernel/locking/lockdep.c:3767 [inline]
lock_release+0x237/0x870 kernel/locking/lockdep.c:4017
rcu_lock_release include/linux/rcupdate.h:247 [inline]
rcu_read_unlock include/linux/rcupdate.h:685 [inline]
__perf_event_output kernel/events/core.c:6292 [inline]
perf_event_output_backward+0x143/0x1f0 kernel/events/core.c:6308
__perf_event_overflow+0x113/0x310 kernel/events/core.c:7549
perf_swevent_hrtimer+0x220/0x350 kernel/events/core.c:8754
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x30b/0xc80 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1079 [inline]
smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1104
apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
</IRQ>
RIP: 0010:perf_output_sample_regs+0xe/0xf0 kernel/events/core.c:5633
RSP: 0018:ffff888072a6f350 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1100e54deef
RDX: 0000000000400001 RSI: ffff888072a6f968 RDI: ffff888072a6f4a8
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed101485d4d8
R10: ffff8880a42ea6c7 R11: 0000000000000000 R12: ffff888072a6f4a8
R13: ffff888072a60680 R14: dffffc0000000000 R15: 00000000000006b8
perf_output_sample+0x1205/0x16f0 kernel/events/core.c:6086
__perf_event_output kernel/events/core.c:6287 [inline]
perf_event_output_backward+0xf8/0x1f0 kernel/events/core.c:6308
__perf_event_overflow+0x113/0x310 kernel/events/core.c:7549
perf_swevent_overflow kernel/events/core.c:7625 [inline]
perf_swevent_event+0x299/0x460 kernel/events/core.c:7653
do_perf_sw_event kernel/events/core.c:7766 [inline]
___perf_sw_event+0x2a1/0x480 kernel/events/core.c:7797
__perf_sw_event+0x4f/0x100 kernel/events/core.c:7809
perf_sw_event include/linux/perf_event.h:1046 [inline]
__do_page_fault+0x5e6/0xad0 arch/x86/mm/fault.c:1348
page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:__clear_user+0x3d/0x60 arch/x86/lib/usercopy_64.c:23
RSP: 0018:ffff888072a6fa18 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 000000000000008b
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000020fb0fff
RBP: 0000000020fb0457 R08: ffffffff8b99dbe8 R09: 0000000000000000
R10: 0000000000000000 R11: ffff888072a60680 R12: 0000000020fb0457
R13: 0000000020fb1457 R14: 0000000000000000 R15: 0000000000001000
clear_user+0x74/0xb0 arch/x86/lib/usercopy_64.c:53
iov_iter_zero+0x1c7/0xcc0 lib/iov_iter.c:776
read_iter_zero+0xb8/0x180 drivers/char/mem.c:710
call_read_iter include/linux/fs.h:1774 [inline]
do_iter_readv_writev+0x41d/0x5f0 fs/read_write.c:673
do_iter_read+0x21d/0x5b0 fs/read_write.c:917
vfs_readv+0xc8/0x120 fs/read_write.c:981
do_readv+0xfc/0x2c0 fs/read_write.c:1014
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f09dbedde99
RSP: 002b:00007f09da853168 EFLAGS: 00000246 ORIG_RAX: 0000000000000013
RAX: ffffffffffffffda RBX: 00007f09dbff0f60 RCX: 00007f09dbedde99
RDX: 000000000000000a RSI: 0000000020001900 RDI: 0000000000000005
RBP: 00007f09dbf37ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe3577a0cf R14: 00007f09da853300 R15: 0000000000022000
Code: 44 8d 6a ff 49 63 c5 41 54 48 8d 04 80 55 4c 8d a4 c7 88 08 00 00 53 89 d3 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 10 48 89 fa <48> c1 ea 03 80 3c 02 00 0f 85 b8 01 00 00 4d 3b 7c 24 10 0f 84
----------------
Code disassembly (best guess), 2 bytes skipped:
0: df 48 89 fisttps -0x77(%rax)
3: fa cli
4: 48 c1 ea 03 shr $0x3,%rdx
8: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
c: 0f 85 e6 00 00 00 jne 0xf8
12: 49 8d 7c 24 10 lea 0x10(%r12),%rdi
17: 4d 8b 74 24 08 mov 0x8(%r12),%r14
1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
23: fc ff df
26: 48 89 fa mov %rdi,%rdx
* 29: 48 c1 ea 03 shr $0x3,%rdx <-- trapping instruction
2d: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
31: 0f 85 b7 00 00 00 jne 0xee
37: 49 39 ee cmp %rbp,%r14
3a: 49 rex.WB
3b: 8b .byte 0x8b
3c: 44 rex.R
3d: 24 .byte 0x24