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INFO: task hung in fuse_simple_request

Status: upstream: reported C repro on 2020/12/13 21:13
Subsystems: fuse
[Documentation on labels]
Reported-by: syzbot+46fe899420456e014d6b@syzkaller.appspotmail.com
First crash: 1781d, last: 291d
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: general protection fault in process_init_reply (log)
Repro: C syz .config
  
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (3)
Title Replies (including bot) Last reply
Re: [syzbot] Monthly fuse report 2 (2) 2023/04/14 15:09
[syzbot] Monthly fuse report 0 (1) 2023/04/05 09:00
INFO: task hung in fuse_simple_request 4 (6) 2021/08/06 11:09
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 INFO: task hung in fuse_simple_request (2) 1 3 265d 383d 0/3 auto-obsoleted due to no activity on 2025/01/28 01:40
linux-5.15 INFO: task hung in fuse_simple_request 1 12 624d 722d 0/3 auto-obsoleted due to no activity on 2024/02/03 13:59
linux-6.1 INFO: task hung in fuse_simple_request 1 6 601d 690d 0/3 auto-obsoleted due to no activity on 2024/02/26 14:29
linux-5.15 INFO: task hung in fuse_simple_request (3) 1 9 19d 133d 0/3 upstream: reported on 2025/03/01 01:36
linux-6.1 INFO: task hung in fuse_simple_request (2) origin:upstream 1 syz 22 3d19h 385d 0/3 upstream: reported syz repro on 2024/06/21 20:45
upstream INFO: task can't die in request_wait_answer fuse 1 C error 14 1242d 1752d 0/29 auto-obsoleted due to no activity on 2023/04/16 22:02
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/05/16 09:12 22m retest repro upstream report log
2025/05/06 05:14 24m retest repro upstream report log
2025/03/02 22:40 21m retest repro upstream report log
2025/02/24 16:14 28m retest repro upstream report log
2024/12/22 16:07 17m retest repro upstream report log
2024/12/16 15:08 27m retest repro upstream report log
2024/10/12 14:10 14m retest repro upstream report log
2024/10/07 13:08 23m retest repro upstream report log
2024/07/29 17:13 16m retest repro upstream report log
2024/06/03 16:25 24m retest repro upstream report log
▶ ▼ Fix bisection attempts (5)
Created Duration User Patch Repo Result
2023/07/12 19:01 1m bisect fix upstream error job log
2022/08/22 22:16 38m bisect fix upstream OK (0) job log log
2022/04/05 10:07 24m bisect fix upstream OK (0) job log log
2022/02/26 23:33 25m bisect fix upstream OK (0) job log log
2021/10/04 04:35 32m bisect fix upstream OK (0) job log log

Sample crash report:
INFO: task syz-executor874:8578 blocked for more than 143 seconds.
      Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:26768 pid: 8578 ppid:  8450 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4683 [inline]
 __schedule+0xc07/0x11f0 kernel/sched/core.c:5940
 schedule+0x14b/0x210 kernel/sched/core.c:6019
 request_wait_answer fs/fuse/dev.c:411 [inline]
 __fuse_request_send fs/fuse/dev.c:430 [inline]
 fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
 fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
 vfs_getattr fs/stat.c:142 [inline]
 vfs_statx+0x1ba/0x3d0 fs/stat.c:207
 vfs_fstatat fs/stat.c:225 [inline]
 __do_sys_newfstatat fs/stat.c:394 [inline]
 __se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8582 blocked for more than 143 seconds.
      Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:25368 pid: 8582 ppid:  8451 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4683 [inline]
 __schedule+0xc07/0x11f0 kernel/sched/core.c:5940
 schedule+0x14b/0x210 kernel/sched/core.c:6019
 request_wait_answer fs/fuse/dev.c:411 [inline]
 __fuse_request_send fs/fuse/dev.c:430 [inline]
 fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
 fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
 vfs_getattr fs/stat.c:142 [inline]
 vfs_statx+0x1ba/0x3d0 fs/stat.c:207
 vfs_fstatat fs/stat.c:225 [inline]
 __do_sys_newfstatat fs/stat.c:394 [inline]
 __se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8597 blocked for more than 143 seconds.
      Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:24784 pid: 8597 ppid:  8448 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4683 [inline]
 __schedule+0xc07/0x11f0 kernel/sched/core.c:5940
 schedule+0x14b/0x210 kernel/sched/core.c:6019
 request_wait_answer fs/fuse/dev.c:411 [inline]
 __fuse_request_send fs/fuse/dev.c:430 [inline]
 fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
 fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
 vfs_getattr fs/stat.c:142 [inline]
 vfs_statx+0x1ba/0x3d0 fs/stat.c:207
 vfs_fstatat fs/stat.c:225 [inline]
 __do_sys_newfstatat fs/stat.c:394 [inline]
 __se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8601 blocked for more than 144 seconds.
      Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:24784 pid: 8601 ppid:  8452 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4683 [inline]
 __schedule+0xc07/0x11f0 kernel/sched/core.c:5940
 schedule+0x14b/0x210 kernel/sched/core.c:6019
 request_wait_answer fs/fuse/dev.c:411 [inline]
 __fuse_request_send fs/fuse/dev.c:430 [inline]
 fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
 fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
 vfs_getattr fs/stat.c:142 [inline]
 vfs_statx+0x1ba/0x3d0 fs/stat.c:207
 vfs_fstatat fs/stat.c:225 [inline]
 __do_sys_newfstatat fs/stat.c:394 [inline]
 __se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8617 blocked for more than 144 seconds.
      Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:26768 pid: 8617 ppid:  8451 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4683 [inline]
 __schedule+0xc07/0x11f0 kernel/sched/core.c:5940
 schedule+0x14b/0x210 kernel/sched/core.c:6019
 request_wait_answer fs/fuse/dev.c:411 [inline]
 __fuse_request_send fs/fuse/dev.c:430 [inline]
 fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
 fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
 vfs_getattr fs/stat.c:142 [inline]
 vfs_statx+0x1ba/0x3d0 fs/stat.c:207
 vfs_fstatat fs/stat.c:225 [inline]
 __do_sys_newfstatat fs/stat.c:394 [inline]
 __se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8626 blocked for more than 144 seconds.
      Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:24784 pid: 8626 ppid:  8450 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4683 [inline]
 __schedule+0xc07/0x11f0 kernel/sched/core.c:5940
 schedule+0x14b/0x210 kernel/sched/core.c:6019
 request_wait_answer fs/fuse/dev.c:411 [inline]
 __fuse_request_send fs/fuse/dev.c:430 [inline]
 fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
 fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
 vfs_getattr fs/stat.c:142 [inline]
 vfs_statx+0x1ba/0x3d0 fs/stat.c:207
 vfs_fstatat fs/stat.c:225 [inline]
 __do_sys_newfstatat fs/stat.c:394 [inline]
 __se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8630 blocked for more than 145 seconds.
      Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:24784 pid: 8630 ppid:  8452 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4683 [inline]
 __schedule+0xc07/0x11f0 kernel/sched/core.c:5940
 schedule+0x14b/0x210 kernel/sched/core.c:6019
 request_wait_answer fs/fuse/dev.c:411 [inline]
 __fuse_request_send fs/fuse/dev.c:430 [inline]
 fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
 fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
 vfs_getattr fs/stat.c:142 [inline]
 vfs_statx+0x1ba/0x3d0 fs/stat.c:207
 vfs_fstatat fs/stat.c:225 [inline]
 __do_sys_newfstatat fs/stat.c:394 [inline]
 __se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8634 blocked for more than 145 seconds.
      Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:26640 pid: 8634 ppid:  8448 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4683 [inline]
 __schedule+0xc07/0x11f0 kernel/sched/core.c:5940
 schedule+0x14b/0x210 kernel/sched/core.c:6019
 request_wait_answer fs/fuse/dev.c:411 [inline]
 __fuse_request_send fs/fuse/dev.c:430 [inline]
 fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
 fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
 vfs_getattr fs/stat.c:142 [inline]
 vfs_statx+0x1ba/0x3d0 fs/stat.c:207
 vfs_fstatat fs/stat.c:225 [inline]
 __do_sys_newfstatat fs/stat.c:394 [inline]
 __se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8657 blocked for more than 145 seconds.
      Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:26768 pid: 8657 ppid:  8450 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4683 [inline]
 __schedule+0xc07/0x11f0 kernel/sched/core.c:5940
 schedule+0x14b/0x210 kernel/sched/core.c:6019
 request_wait_answer fs/fuse/dev.c:411 [inline]
 __fuse_request_send fs/fuse/dev.c:430 [inline]
 fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
 fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
 vfs_getattr fs/stat.c:142 [inline]
 vfs_statx+0x1ba/0x3d0 fs/stat.c:207
 vfs_fstatat fs/stat.c:225 [inline]
 __do_sys_newfstatat fs/stat.c:394 [inline]
 __se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8665 blocked for more than 145 seconds.
      Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:26768 pid: 8665 ppid:  8452 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4683 [inline]
 __schedule+0xc07/0x11f0 kernel/sched/core.c:5940
 schedule+0x14b/0x210 kernel/sched/core.c:6019
 request_wait_answer fs/fuse/dev.c:411 [inline]
 __fuse_request_send fs/fuse/dev.c:430 [inline]
 fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
 fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
 vfs_getattr fs/stat.c:142 [inline]
 vfs_statx+0x1ba/0x3d0 fs/stat.c:207
 vfs_fstatat fs/stat.c:225 [inline]
 __do_sys_newfstatat fs/stat.c:394 [inline]
 __se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8

Showing all locks held in the system:
1 lock held by ksoftirqd/0/13:
 #0: ffff8880b9c514d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x1b/0x30 kernel/sched/core.c:460
1 lock held by khungtaskd/1644:
 #0: ffffffff8c7177c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 arch/x86/pci/mmconfig_64.c:151
1 lock held by in:imklog/8138:
 #0: ffff888019edb270 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:974
no locks held by syz-executor874/16040.

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 1644 Comm: khungtaskd Not tainted 5.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1d3/0x29f lib/dump_stack.c:105
 nmi_cpu_backtrace+0x16c/0x190 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x191/0x2f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
 watchdog+0xd06/0xd50 kernel/hung_task.c:295
 kthread+0x453/0x480 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8453 Comm: syz-executor874 Not tainted 5.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:put_pid+0x0/0x130 kernel/pid.c:106
Code: 1f 84 00 00 00 00 00 0f 1f 00 be af 00 00 00 48 c7 c7 40 99 5c 8c e8 ff d4 74 00 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc <55> 41 57 41 56 41 54 53 49 89 ff e8 c0 a3 2b 00 4d 85 ff 0f 84 aa
RSP: 0018:ffffc9000198fc78 EFLAGS: 00000286
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000198fd90 R08: ffffffff81869020 R09: ffffed1002bf8685
R10: ffffed1002bf8685 R11: 0000000000000000 R12: 0000000000000000
R13: 1ffff92000331f94 R14: 1ffff92000331f9b R15: 0000000000000000
FS:  00000000020ba300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb52603718 CR3: 00000000366ee000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kernel_wait4+0x27f/0x380 kernel/exit.c:1678
 __do_sys_wait4 kernel/exit.c:1705 [inline]
 __se_sys_wait4 kernel/exit.c:1701 [inline]
 __x64_sys_wait4+0x117/0x1c0 kernel/exit.c:1701
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x444826
Code: 0f 1f 40 00 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 49 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 90 48 83 ec 28 89 54 24 14 48 89 74 24
RSP: 002b:00007fff50fbe958 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 00007fff50fbea10 RCX: 0000000000444826
RDX: 0000000040000001 RSI: 00007fff50fbe98c RDI: 00000000ffffffff
RBP: 00007fff50fbe98c R08: 00007fff50fec080 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000f4240
R13: 0000000000001eee R14: 00007fff50fbe9e0 R15: 00007fff50fbe9d0

Crashes (273):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/07/17 02:27 upstream d936eb238744 f115ae98 .config console log report syz C ci-upstream-kasan-gce-smack-root INFO: task hung in fuse_simple_request
2024/04/14 12:40 upstream fe46a7dd189e c8349e48 .config strace log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs INFO: task hung in fuse_simple_request
2021/10/10 17:56 upstream 7fd2bf83d59a 838e7e2c .config console log report syz C ci-upstream-kasan-gce INFO: task hung in fuse_simple_request
2024/09/23 11:54 upstream de5cb0dcb74c 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in fuse_simple_request
2024/09/16 07:06 upstream 98f7e32f20d2 08d8a733 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in fuse_simple_request
2024/09/15 22:27 upstream d42f7708e27c 08d8a733 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in fuse_simple_request
2024/09/11 20:14 upstream 7c6a3a65ace7 9326a104 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in fuse_simple_request
2024/09/04 01:08 upstream 88fac17500f4 9d47f20a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in fuse_simple_request
2024/08/25 16:57 upstream 5be63fc19fca d7d32352 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in fuse_simple_request
2024/08/25 11:55 upstream 780bdc1ba776 d7d32352 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in fuse_simple_request
2024/08/19 00:18 upstream c3f2d783a459 dbc93b08 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in fuse_simple_request
2024/08/18 06:58 upstream df6cbc62cc9b dbc93b08 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in fuse_simple_request
2024/08/14 00:09 upstream 6b4aa469f049 f21a18ca .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in fuse_simple_request
2024/08/06 08:20 upstream b446a2dae984 e1bdb00a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in fuse_simple_request
2024/07/10 07:25 upstream 34afb82a3c67 79d68ada .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in fuse_simple_request
2024/07/04 21:30 upstream 795c58e4c7fc dc6bbff0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in fuse_simple_request
2024/06/24 01:35 upstream 7c16f0a4ed1c edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in fuse_simple_request
2024/06/22 06:32 upstream 66cc544fd75c edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in fuse_simple_request
2024/05/06 15:13 upstream dd5a440a31fa d884b519 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/05/05 09:35 upstream 7367539ad4b0 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in fuse_simple_request
2024/04/21 16:24 upstream 977b1ef51866 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in fuse_simple_request
2024/04/21 05:57 upstream 977b1ef51866 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in fuse_simple_request
2024/04/09 16:00 upstream fe46a7dd189e f3234354 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/04/05 22:58 upstream fe46a7dd189e 18ea8213 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in fuse_simple_request
2024/04/05 08:04 upstream fe46a7dd189e 0ee3535e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in fuse_simple_request
2024/03/07 01:41 upstream 67be068d31d4 f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/03/06 23:51 upstream 5847c9777c30 f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/03/05 22:42 upstream 29cd507cbec2 f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/03/05 15:21 upstream 90d35da658da f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/03/04 12:48 upstream 90d35da658da 3717835d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/03/03 19:18 upstream 58c806d867bf 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/03/03 06:15 upstream 04b8076df253 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/03/02 20:50 upstream 5ad3cb0ed525 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/02/29 12:59 upstream e326df53af00 352ab904 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/02/28 17:06 upstream cf1182944c7c 55d6f11d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/02/28 15:21 upstream cf1182944c7c 55d6f11d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/02/26 19:39 upstream d206a76d7d27 da36a36b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/02/25 09:48 upstream ab0a97cffa0b 8d446f15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/02/22 18:06 upstream 39133352cbed 8d446f15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2024/02/19 13:42 upstream b401b621758e 3af7dd65 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in fuse_simple_request
2023/03/25 09:57 upstream 65aca32efdcb fbf0499a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in fuse_simple_request
2024/07/10 13:14 linux-next 523b23f0bee3 e7213be3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in fuse_simple_request
2024/07/04 14:57 linux-next 0b58e108042b dc6bbff0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in fuse_simple_request
2024/06/24 13:58 linux-next f76698bd9a8c edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in fuse_simple_request
2024/08/17 15:50 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 5c43d43bad35 dbc93b08 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: task hung in fuse_simple_request
2024/05/01 08:43 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 6a71d2909427 9e0e6af1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: task hung in fuse_simple_request
2024/04/14 16:06 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci b5d2afe8745b c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: task hung in fuse_simple_request
2024/04/01 22:54 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 707081b61156 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: task hung in fuse_simple_request
2024/02/28 05:13 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 9abbc24128bc d367cbe5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: task hung in fuse_simple_request
2024/02/23 07:59 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 9abbc24128bc 8d446f15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: task hung in fuse_simple_request
2024/02/22 23:46 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 9abbc24128bc 8d446f15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: task hung in fuse_simple_request
2024/02/21 21:36 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59a96b711109 345111b5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: task hung in fuse_simple_request
2024/02/21 18:56 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e6ac7c55d3ec 345111b5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: task hung in fuse_simple_request
2024/02/19 18:17 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 83d49ede4b18 3af7dd65 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: task hung in fuse_simple_request
2022/01/23 16:39 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 64a19591a293 214351e1 .config console log report info ci-qemu2-riscv64 INFO: task hung in fuse_simple_request
2020/12/13 05:19 upstream 7b1b868e1d91 bca53db9 .config console log report info ci-upstream-kasan-gce
2020/12/11 06:20 upstream 33dc9614dc20 f900b48c .config console log report info ci-upstream-kasan-gce-root
2020/12/09 20:53 upstream a68a0262abda c090b4da .config console log report info ci-upstream-kasan-gce-root
2020/08/25 14:33 upstream 6a9dc5fd6170 344da168 .config console log report ci-upstream-kasan-gce
* Struck through repros no longer work on HEAD.