INFO: task hung in iterate

INFO: task hung in iterate_supers
Status: upstream: reported C repro on 2018/07/10 10:30
Reported-by: syzbot+2349f5067b1772c1d8a5@syzkaller.appspotmail.com
First crash: 656d, last: 23d

Cause bisection: failed (bisect log)

similar bugs (5):
Kernel	Title	Count	Last	Reported	Patched	Status
android-414	INFO: task hung in iterate_supers	1	524d	362d	0/1	auto-closed as invalid on 2019/04/28 09:45
linux-4.14	INFO: task hung in iterate_supers	12	36d	347d	0/1	upstream: reported on 2019/04/25 14:13
linux-4.19	INFO: task hung in iterate_supers	7	67d	254d	0/1	upstream: reported on 2019/07/27 15:06
android-49	INFO: task hung in iterate_supers	19	586d	686d	0/3	auto-closed as invalid on 2019/02/25 14:49
android-414	INFO: task hung in iterate_supers (2)	1	343d	343d	0/1	auto-closed as invalid on 2019/10/25 08:49

Sample crash report:

INFO: task syz-executor687:4459 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc3-next-20180709+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor687 D23544  4459   4456 0x00000000
Call Trace:
 context_switch kernel/sched/core.c:2853 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3501
 schedule+0xfb/0x450 kernel/sched/core.c:3545
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline]
 rwsem_down_read_failed+0x362/0x600 kernel/locking/rwsem-xadd.c:286
 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0xc3/0x1d0 kernel/locking/rwsem.c:26
 iterate_supers+0xe2/0x290 fs/super.c:728
 ksys_sync+0xec/0x1e0 fs/sync.c:113
 __ia32_sys_sync+0xe/0x20 fs/sync.c:124
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4498c9
Code: e8 1c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 ab d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f0ad5912da8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00000000006dac44 RCX: 00000000004498c9
RDX: 00000000004498c9 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000006dac40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0030656c69662f2e
R13: 3d6e6f6973726576 R14: 64663d736e617274 R15: 0000000000000001
INFO: task syz-executor687:4479 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc3-next-20180709+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor687 D25408  4479   4456 0x00000000
Call Trace:
 context_switch kernel/sched/core.c:2853 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3501
 schedule+0xfb/0x450 kernel/sched/core.c:3545
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline]
 rwsem_down_read_failed+0x362/0x600 kernel/locking/rwsem-xadd.c:286
 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0xc3/0x1d0 kernel/locking/rwsem.c:26
 iterate_supers+0xe2/0x290 fs/super.c:728
 ksys_sync+0x10c/0x1e0 fs/sync.c:115
 __ia32_sys_sync+0xe/0x20 fs/sync.c:124
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4498c9
Code: e8 1c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 ab d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f0ad58f1da8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00000000006dac5c RCX: 00000000004498c9
RDX: 00000000004498c9 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000006dac58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0030656c69662f2e
R13: 3d6e6f6973726576 R14: 64663d736e617274 R15: 0000000000000001
INFO: task syz-executor687:4492 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc3-next-20180709+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor687 D22992  4492   4456 0x00000000
Call Trace:
 context_switch kernel/sched/core.c:2853 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3501
 schedule+0xfb/0x450 kernel/sched/core.c:3545
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline]
 rwsem_down_read_failed+0x362/0x600 kernel/locking/rwsem-xadd.c:286
 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0xc3/0x1d0 kernel/locking/rwsem.c:26
 iterate_supers+0xe2/0x290 fs/super.c:728
 ksys_sync+0xec/0x1e0 fs/sync.c:113
 __ia32_sys_sync+0xe/0x20 fs/sync.c:124
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4498c9
Code: e8 1c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 ab d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f0ad58d0da8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00000000006dac74 RCX: 00000000004498c9
RDX: 00000000004498c9 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000006dac70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0030656c69662f2e
R13: 3d6e6f6973726576 R14: 64663d736e617274 R15: 0000000000000001
INFO: task syz-executor687:4497 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc3-next-20180709+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor687 D25408  4497   4456 0x00000000
Call Trace:
 context_switch kernel/sched/core.c:2853 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3501
 schedule+0xfb/0x450 kernel/sched/core.c:3545
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline]
 rwsem_down_read_failed+0x362/0x600 kernel/locking/rwsem-xadd.c:286
 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0xc3/0x1d0 kernel/locking/rwsem.c:26
 iterate_supers+0xe2/0x290 fs/super.c:728
 ksys_sync+0xec/0x1e0 fs/sync.c:113
 __ia32_sys_sync+0xe/0x20 fs/sync.c:124
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4498c9
Code: e8 1c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 ab d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f0ad58afda8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00000000006dac8c RCX: 00000000004498c9
RDX: 00000000004498c9 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000006dac88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0030656c69662f2e
R13: 3d6e6f6973726576 R14: 64663d736e617274 R15: 0000000000000001
INFO: task syz-executor687:4503 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc3-next-20180709+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor687 D24512  4503   4456 0x00000000
Call Trace:
 context_switch kernel/sched/core.c:2853 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3501
 schedule+0xfb/0x450 kernel/sched/core.c:3545
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline]
 rwsem_down_read_failed+0x362/0x600 kernel/locking/rwsem-xadd.c:286
 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0xc3/0x1d0 kernel/locking/rwsem.c:26
 iterate_supers+0xe2/0x290 fs/super.c:728
 ksys_sync+0xec/0x1e0 fs/sync.c:113
 __ia32_sys_sync+0xe/0x20 fs/sync.c:124
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4498c9
Code: e8 1c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 ab d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f0ad588eda8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00000000006daca4 RCX: 00000000004498c9
RDX: 00000000004498c9 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000006daca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0030656c69662f2e
R13: 3d6e6f6973726576 R14: 64663d736e617274 R15: 0000000000000001
INFO: task syz-executor687:4521 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc3-next-20180709+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor687 D23648  4521   4456 0x00000000
Call Trace:
 context_switch kernel/sched/core.c:2853 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3501
 schedule+0xfb/0x450 kernel/sched/core.c:3545
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline]
 rwsem_down_read_failed+0x362/0x600 kernel/locking/rwsem-xadd.c:286
 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0xc3/0x1d0 kernel/locking/rwsem.c:26
 iterate_supers+0xe2/0x290 fs/super.c:728
 ksys_sync+0xec/0x1e0 fs/sync.c:113
 __ia32_sys_sync+0xe/0x20 fs/sync.c:124
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4498c9
Code: e8 1c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 ab d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f0ad586dda8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00000000006dacbc RCX: 00000000004498c9
RDX: 00000000004498c9 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000006dacb8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0030656c69662f2e
R13: 3d6e6f6973726576 R14: 64663d736e617274 R15: 0000000000000001
INFO: task syz-executor687:4524 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc3-next-20180709+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor687 D23640  4524   4456 0x00000000
Call Trace:
 context_switch kernel/sched/core.c:2853 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3501
 schedule+0xfb/0x450 kernel/sched/core.c:3545
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline]
 rwsem_down_read_failed+0x362/0x600 kernel/locking/rwsem-xadd.c:286
 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0xc3/0x1d0 kernel/locking/rwsem.c:26
 iterate_supers+0xe2/0x290 fs/super.c:728
 ksys_sync+0xec/0x1e0 fs/sync.c:113
 __ia32_sys_sync+0xe/0x20 fs/sync.c:124
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4498c9
Code: e8 1c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 ab d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f0ad584cda8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00000000006dacd4 RCX: 00000000004498c9
RDX: 00000000004498c9 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000006dacd0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0030656c69662f2e
R13: 3d6e6f6973726576 R14: 64663d736e617274 R15: 0000000000000001
INFO: task syz-executor687:4534 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc3-next-20180709+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor687 D23864  4534   4456 0x00000000
Call Trace:
 context_switch kernel/sched/core.c:2853 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3501
 schedule+0xfb/0x450 kernel/sched/core.c:3545
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline]
 rwsem_down_read_failed+0x362/0x600 kernel/locking/rwsem-xadd.c:286
 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0xc3/0x1d0 kernel/locking/rwsem.c:26
 iterate_supers+0xe2/0x290 fs/super.c:728
 ksys_sync+0xec/0x1e0 fs/sync.c:113
 __ia32_sys_sync+0xe/0x20 fs/sync.c:124
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4498c9
Code: e8 1c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 ab d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f0ad582bda8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00000000006dacec RCX: 00000000004498c9
RDX: 00000000004498c9 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000006dace8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0030656c69662f2e
R13: 3d6e6f6973726576 R14: 64663d736e617274 R15: 0000000000000001
INFO: task syz-executor687:4548 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc3-next-20180709+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor687 D25408  4548   4456 0x00000000
Call Trace:
 context_switch kernel/sched/core.c:2853 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3501
 schedule+0xfb/0x450 kernel/sched/core.c:3545
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline]
 rwsem_down_read_failed+0x362/0x600 kernel/locking/rwsem-xadd.c:286
 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0xc3/0x1d0 kernel/locking/rwsem.c:26
 iterate_supers+0xe2/0x290 fs/super.c:728
 ksys_sync+0xec/0x1e0 fs/sync.c:113
 __ia32_sys_sync+0xe/0x20 fs/sync.c:124
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4498c9
Code: e8 1c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 ab d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f0ad580ada8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00000000006dad04 RCX: 00000000004498c9
RDX: 00000000004498c9 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000006dad00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0030656c69662f2e
R13: 3d6e6f6973726576 R14: 64663d736e617274 R15: 0000000000000001
INFO: task syz-executor687:4556 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc3-next-20180709+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor687 D24480  4556   4456 0x00000000
Call Trace:
 context_switch kernel/sched/core.c:2853 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3501
 schedule+0xfb/0x450 kernel/sched/core.c:3545
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline]
 rwsem_down_read_failed+0x362/0x600 kernel/locking/rwsem-xadd.c:286
 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0xc3/0x1d0 kernel/locking/rwsem.c:26
 iterate_supers+0xe2/0x290 fs/super.c:728
 ksys_sync+0xec/0x1e0 fs/sync.c:113
 __ia32_sys_sync+0xe/0x20 fs/sync.c:124
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4498c9
Code: e8 1c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 ab d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f0ad57e9da8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00000000006dad1c RCX: 00000000004498c9
RDX: 00000000004498c9 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000006dad18 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0030656c69662f2e
R13: 3d6e6f6973726576 R14: 64663d736e617274 R15: 0000000000000001
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 899 Comm: khungtaskd Not tainted 4.18.0-rc3-next-20180709+ #2
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+0x1c9/0x2b4 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.5+0x19/0xce lib/nmi_backtrace.c:103
 nmi_trigger_cpumask_backtrace+0x151/0x192 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace include/linux/nmi.h:143 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline]
 watchdog+0xb39/0x10b0 kernel/hung_task.c:265
 kthread+0x345/0x410 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54

Crashes (54):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci-upstream-linux-next-kasan-gce-root	2018/07/10 04:07	linux-next	d00d6d9a	f25e5770	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2020/03/14 17:40	upstream	fffb08b3	749688d2	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-smack-root	2019/11/18 23:11	upstream	af42d346	1daed50a	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2019/11/01 13:59	upstream	e472c64a	a41ca8fa	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-smack-root	2019/10/02 06:29	upstream	54ecb8f7	b7a87a83	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root	2019/08/21 19:35	upstream	15d90b24	4ea67ff8	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root	2019/04/29 10:54	upstream	37624b58	b617407b	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root	2019/04/19 14:04	upstream	6d906f99	b0e8efcb	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root	2019/03/02 19:21	upstream	c93d9218	1c0e457a	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root	2019/01/14 08:48	upstream	6b529fb0	c3f3344c	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2019/01/06 10:36	upstream	b5aef86e	53be0a37	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2019/01/02 13:32	upstream	8e143b90	f0491811	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-smack-root	2018/12/30 12:52	upstream	19530313	9942de5f	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/12/25 18:19	upstream	8fe28cb5	8a41a0ad	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/12/15 19:23	upstream	6531e115	c9128939	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/12/05 10:58	upstream	0072a0c1	ac6c0578	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-smack-root	2018/10/28 20:33	upstream	dad4f140	6f9b225a	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-smack-root	2018/10/28 10:19	upstream	69d5b97c	6f9b225a	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root	2018/10/27 13:42	upstream	345671ea	8efba39a	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/10/25 00:03	upstream	638820d8	a8292de9	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-smack-root	2018/10/23 01:23	upstream	84df9525	ecb386fe	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root	2018/10/14 06:07	upstream	7ec21823	caf12900	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root	2018/10/08 08:17	upstream	0238df64	8b311eaf	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-smack-root	2018/10/07 07:10	upstream	c1d84a1b	8b311eaf	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root	2018/10/06 18:55	upstream	091a1eaa	8b311eaf	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root	2018/10/06 07:58	upstream	b2e45b46	8b311eaf	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/08/20 17:32	upstream	2ad0d526	2dc4378f	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/08/17 08:05	upstream	5c60a738	9ccc1d45	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/08/14 20:24	upstream	10f3e23f	5084a625	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/08/14 09:10	upstream	77969161	7a88b141	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/08/12 07:38	upstream	ec0c9671	7a88b141	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/08/05 02:34	upstream	60f5a217	3476a2df	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/07/20 10:09	upstream	fb7d1bcf	49f35839	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/07/20 00:27	upstream	024ddc0c	49f35839	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root	2018/06/21 06:34	upstream	1abd8a8f	095ef806	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2019/09/25 17:40	linux-next	9e88347d	a3355dba	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2019/09/22 21:59	linux-next	b5b3bd89	d96e88f3	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2019/03/15 10:53	linux-next	cf08baa2	bab43553	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2019/03/09 06:56	linux-next	cf08baa2	12365b99	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2019/01/09 04:28	linux-next	d6e77253	010ed08b	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/12/16 17:31	linux-next	d14b746c	def91db3	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/11/10 21:44	linux-next	442b8cea	f3c4e618	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/10/20 01:38	linux-next	8c60c36d	ecb386fe	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/10/04 21:49	linux-next	25bcda3e	8b311eaf	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/09/30 09:58	linux-next	4794a36b	41e4b329	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/08/27 19:34	linux-next	ab6fc6ef	758cd203	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/08/23 21:11	linux-next	455fb5ec	95b5c82b	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/08/06 04:25	linux-next	116b181b	1beb8136	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/08/04 04:40	linux-next	116b181b	df7f6947	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/08/02 07:25	linux-next	d9bd94c0	0a7cf4ec	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/08/01 07:42	linux-next	d1e0b8e0	1477993e	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/07/18 20:17	linux-next	0b742fe1	809256c3	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/07/14 15:36	linux-next	483d835c	92a49505	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root	2018/07/09 22:27	linux-next	d00d6d9a	f25e5770	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk