syzbot


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: 1472d, last: 66d

Cause bisection: failed (bisect log)
similar bugs (8):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-414 INFO: task hung in iterate_supers 1 1340d 1178d 0/1 auto-closed as invalid on 2019/04/28 09:45
linux-4.14 INFO: task hung in iterate_supers 16 548d 1163d 0/1 auto-closed as invalid on 2021/04/29 12:11
linux-4.19 INFO: task hung in iterate_supers (2) 1 750d 750d 0/1 auto-closed as invalid on 2020/10/09 12:15
linux-4.19 INFO: task hung in iterate_supers 7 883d 1070d 0/1 auto-closed as invalid on 2020/05/29 21:42
linux-4.19 INFO: task hung in iterate_supers (3) 24 29d 559d 0/1 upstream: reported on 2020/12/20 03:38
android-49 INFO: task hung in iterate_supers 19 1402d 1502d 0/3 auto-closed as invalid on 2019/02/25 14:49
android-414 INFO: task hung in iterate_supers (2) 1 1159d 1159d 0/1 auto-closed as invalid on 2019/10/25 08:49
upstream INFO: task can't die in iterate_supers (2) 1 383d 379d 0/22 auto-closed as invalid on 2021/08/13 03:51

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 (58):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2018/07/10 04:07 linux-next d00d6d9a339d f25e5770 .config log report syz C
ci-upstream-kasan-gce-smack-root 2022/04/27 01:33 upstream cf424ef014ac 1fa34c1b .config log report info INFO: task hung in iterate_supers
ci-upstream-kasan-gce-root 2021/11/18 22:26 upstream 42eb8fdac2fc 31a30fc0 .config log report info INFO: task hung in iterate_supers
ci-upstream-kasan-gce-smack-root 2021/09/27 19:12 upstream 5816b3e6577e 78494d16 .config log report info INFO: task hung in iterate_supers
ci-upstream-kasan-gce-selinux-root 2020/12/27 18:23 upstream f838f8d2b694 2242f77f .config log report info
ci-upstream-kasan-gce-root 2020/03/14 17:40 upstream fffb08b37df9 749688d2 .config log report
ci-upstream-kasan-gce-smack-root 2019/11/18 23:11 upstream af42d3466bdc 1daed50a .config log report
ci-upstream-kasan-gce-root 2019/11/01 13:59 upstream e472c64aa4fa a41ca8fa .config log report
ci-upstream-kasan-gce-smack-root 2019/10/02 06:29 upstream 54ecb8f7028c b7a87a83 .config log report
ci-upstream-kasan-gce-selinux-root 2019/08/21 19:35 upstream 15d90b242290 4ea67ff8 .config log report
ci-upstream-kasan-gce-selinux-root 2019/04/29 10:54 upstream 37624b58542f b617407b .config log report
ci-upstream-kasan-gce-selinux-root 2019/04/19 14:04 upstream 6d906f998179 b0e8efcb .config log report
ci-upstream-kasan-gce-selinux-root 2019/03/02 19:21 upstream c93d9218ea56 1c0e457a .config log report
ci-upstream-kasan-gce-selinux-root 2019/01/14 08:48 upstream 6b529fb0a3ea c3f3344c .config log report
ci-upstream-kasan-gce-root 2019/01/06 10:36 upstream b5aef86e089a 53be0a37 .config log report
ci-upstream-kasan-gce-root 2019/01/02 13:32 upstream 8e143b90e4d4 f0491811 .config log report
ci-upstream-kasan-gce-smack-root 2018/12/30 12:52 upstream 195303136f19 9942de5f .config log report
ci-upstream-kasan-gce-root 2018/12/25 18:19 upstream 8fe28cb58bcb 8a41a0ad .config log report
ci-upstream-kasan-gce-root 2018/12/15 19:23 upstream 6531e115b7ab c9128939 .config log report
ci-upstream-kasan-gce-root 2018/12/05 10:58 upstream 0072a0c14d5b ac6c0578 .config log report
ci-upstream-kasan-gce-smack-root 2018/10/28 20:33 upstream dad4f140edaa 6f9b225a .config log report
ci-upstream-kasan-gce-smack-root 2018/10/28 10:19 upstream 69d5b97c5973 6f9b225a .config log report
ci-upstream-kasan-gce-selinux-root 2018/10/27 13:42 upstream 345671ea0f92 8efba39a .config log report
ci-upstream-kasan-gce-root 2018/10/25 00:03 upstream 638820d8da8e a8292de9 .config log report
ci-upstream-kasan-gce-smack-root 2018/10/23 01:23 upstream 84df9525b0c2 ecb386fe .config log report
ci-upstream-kasan-gce-selinux-root 2018/10/14 06:07 upstream 7ec21823634d caf12900 .config log report
ci-upstream-kasan-gce-selinux-root 2018/10/08 08:17 upstream 0238df646e62 8b311eaf .config log report
ci-upstream-kasan-gce-smack-root 2018/10/07 07:10 upstream c1d84a1b42ef 8b311eaf .config log report
ci-upstream-kasan-gce-selinux-root 2018/10/06 18:55 upstream 091a1eaa0e30 8b311eaf .config log report
ci-upstream-kasan-gce-selinux-root 2018/10/06 07:58 upstream b2e45b46d85b 8b311eaf .config log report
ci-upstream-kasan-gce-root 2018/08/20 17:32 upstream 2ad0d5269970 2dc4378f .config log report
ci-upstream-kasan-gce-root 2018/08/17 08:05 upstream 5c60a7389d79 9ccc1d45 .config log report
ci-upstream-kasan-gce-root 2018/08/14 20:24 upstream 10f3e23f07cb 5084a625 .config log report
ci-upstream-kasan-gce-root 2018/08/14 09:10 upstream 7796916146b8 7a88b141 .config log report
ci-upstream-kasan-gce-root 2018/08/12 07:38 upstream ec0c96714e7d 7a88b141 .config log report
ci-upstream-kasan-gce-root 2018/08/05 02:34 upstream 60f5a2173632 3476a2df .config log report
ci-upstream-kasan-gce-root 2018/07/20 10:09 upstream fb7d1bcf1602 49f35839 .config log report
ci-upstream-kasan-gce-root 2018/07/20 00:27 upstream 024ddc0ce104 49f35839 .config log report
ci-upstream-kasan-gce-root 2018/06/21 06:34 upstream 1abd8a8f39cd 095ef806 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/09/25 17:40 linux-next 9e88347dedd8 a3355dba .config log report
ci-upstream-linux-next-kasan-gce-root 2019/09/22 21:59 linux-next b5b3bd898ba9 d96e88f3 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/03/15 10:53 linux-next cf08baa29613 bab43553 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/03/09 06:56 linux-next cf08baa29613 12365b99 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/01/09 04:28 linux-next d6e77253170d 010ed08b .config log report
ci-upstream-linux-next-kasan-gce-root 2018/12/16 17:31 linux-next d14b746c6c1c def91db3 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/11/10 21:44 linux-next 442b8cea2477 f3c4e618 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/20 01:38 linux-next 8c60c36d0b8c ecb386fe .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/04 21:49 linux-next 25bcda3e8b9f 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/30 09:58 linux-next 4794a36bf08d 41e4b329 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/08/27 19:34 linux-next ab6fc6ef2d8b 758cd203 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/08/23 21:11 linux-next 455fb5ec1df1 95b5c82b .config log report
ci-upstream-linux-next-kasan-gce-root 2018/08/06 04:25 linux-next 116b181bb646 1beb8136 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/08/04 04:40 linux-next 116b181bb646 df7f6947 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/08/02 07:25 linux-next d9bd94c0bcaa 0a7cf4ec .config log report
ci-upstream-linux-next-kasan-gce-root 2018/08/01 07:42 linux-next d1e0b8e0cb7a 1477993e .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/18 20:17 linux-next 0b742fe187f7 809256c3 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/14 15:36 linux-next 483d835c8189 92a49505 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/09 22:27 linux-next d00d6d9a339d f25e5770 .config log report