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INFO: task hung in kernfs_dop_revalidate (4)

Status: upstream: reported C repro on 2024/06/04 12:47
Subsystems: kernfs
[Documentation on labels]
Reported-by: syzbot+da20d108162166514db6@syzkaller.appspotmail.com
First crash: 467d, last: 5d01h
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (13)
Title Replies (including bot) Last reply
[syzbot] Monthly kernfs report (Jul 2025) 0 (1) 2025/07/23 10:04
[syzbot] Monthly kernfs report (Jun 2025) 0 (1) 2025/06/23 07:33
[syzbot] Monthly kernfs report (May 2025) 0 (1) 2025/05/21 14:55
[syzbot] Monthly kernfs report (Apr 2025) 0 (1) 2025/04/22 10:11
[syzbot] Monthly kernfs report (Mar 2025) 0 (1) 2025/03/19 21:29
[syzbot] Monthly kernfs report (Feb 2025) 0 (1) 2025/02/16 21:54
[syzbot] Monthly kernfs report (Jan 2025) 0 (1) 2025/01/16 10:12
[syzbot] Monthly kernfs report (Dec 2024) 0 (1) 2024/12/16 09:45
[syzbot] Monthly kernfs report (Nov 2024) 0 (1) 2024/11/15 11:25
[syzbot] Monthly kernfs report (Oct 2024) 0 (1) 2024/10/15 10:07
[syzbot] Monthly kernfs report (Aug 2024) 0 (1) 2024/08/13 12:33
[syzbot] Monthly kernfs report (Jul 2024) 0 (1) 2024/07/09 14:10
[syzbot] [kernfs?] INFO: task hung in kernfs_dop_revalidate (4) 0 (1) 2024/06/04 12:47
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in kernfs_dop_revalidate kernfs 1 syz unreliable inconclusive 2 1121d 1148d 0/29 auto-obsoleted due to no activity on 2022/11/15 03:06
android-414 INFO: task hung in kernfs_dop_revalidate 1 1 2201d 2201d 0/1 auto-closed as invalid on 2019/12/01 15:25
upstream INFO: task hung in kernfs_dop_revalidate (2) kernfs 1 3 926d 979d 0/29 auto-obsoleted due to no activity on 2023/04/29 22:59
upstream INFO: task hung in kernfs_dop_revalidate (3) kernfs 1 1 649d 649d 0/29 auto-obsoleted due to no activity on 2024/01/31 18:27
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2024/10/31 16:48 22m retest repro upstream OK log

Sample crash report:
INFO: task syz-executor:5850 blocked for more than 155 seconds.
      Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:20544 pid:5850  tgid:5850  ppid:1      task_flags:0x400140 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
 kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1160
 lookup_fast+0x237/0x590
 walk_component fs/namei.c:2110 [inline]
 link_path_walk+0x672/0xea0 fs/namei.c:2479
 path_openat+0x266/0x3590 fs/namei.c:3985
 do_filp_open+0x27f/0x4e0 fs/namei.c:4016
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
 do_sys_open fs/open.c:1443 [inline]
 __do_sys_openat fs/open.c:1459 [inline]
 __se_sys_openat fs/open.c:1454 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1454
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6cc5f8ca61
RSP: 002b:00007f6cc62cfd40 EFLAGS: 00000287
 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00000000000010fe RCX: 00007f6cc5f8ca61
RDX: 0000000000090800 RSI: 00007f6cc600e5c0 RDI: 00000000ffffff9c
RBP: 00007f6cc62cfdec R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000874
R13: 0000000000000000 R14: 00000000000b6a14 R15: 00007f6cc62cfe40
 </TASK>
INFO: task syz-executor:5851 blocked for more than 156 seconds.
      Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D
 stack:18800 pid:5851  tgid:5851  ppid:1      task_flags:0x400140 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
 kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1160
 lookup_fast+0x237/0x590
 walk_component fs/namei.c:2110 [inline]
 link_path_walk+0x672/0xea0 fs/namei.c:2479
 path_openat+0x266/0x3590 fs/namei.c:3985
 do_filp_open+0x27f/0x4e0 fs/namei.c:4016
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
 do_sys_open fs/open.c:1443 [inline]
 __do_sys_openat fs/open.c:1459 [inline]
 __se_sys_openat fs/open.c:1454 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1454
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f482ed8ca61
RSP: 002b:00007f482f0cfd40 EFLAGS: 00000287
 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00000000000011af RCX: 00007f482ed8ca61
RDX: 0000000000090800 RSI: 00007f482ee0e5c0 RDI: 00000000ffffff9c
RBP: 00007f482f0cfdec R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000287 R12: 00000000000008c9
R13: 0000000000000000 R14: 00000000000b807b R15: 00007f482f0cfe40
 </TASK>
INFO: task syz-executor:5852 blocked for more than 157 seconds.
      Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:20544 pid:5852  tgid:5852  ppid:1      task_flags:0x400140 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
 kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1160
 lookup_fast+0x237/0x590
 walk_component fs/namei.c:2110 [inline]
 link_path_walk+0x672/0xea0 fs/namei.c:2479
 path_openat+0x266/0x3590 fs/namei.c:3985
 do_filp_open+0x27f/0x4e0 fs/namei.c:4016
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
 do_sys_open fs/open.c:1443 [inline]
 __do_sys_openat fs/open.c:1459 [inline]
 __se_sys_openat fs/open.c:1454 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1454
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcb6538ca61
RSP: 002b:00007fcb656cfd40 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000001150 RCX: 00007fcb6538ca61
RDX: 0000000000090800 RSI: 00007fcb6540e5c0 RDI: 00000000ffffff9c
RBP: 00007fcb656cfdec R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000287 R12: 000000000000089b
R13: 0000000000000000 R14: 00000000000b707b R15: 00007fcb656cfe40
 </TASK>
INFO: task syz-executor:5853 blocked for more than 158 seconds.
      Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D
 stack:18584 pid:5853  tgid:5853  ppid:1      task_flags:0x400140 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
 kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1160
 lookup_fast+0x237/0x590
 walk_component fs/namei.c:2110 [inline]
 link_path_walk+0x672/0xea0 fs/namei.c:2479
 path_openat+0x266/0x3590 fs/namei.c:3985
 do_filp_open+0x27f/0x4e0 fs/namei.c:4016
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
 do_sys_open fs/open.c:1443 [inline]
 __do_sys_openat fs/open.c:1459 [inline]
 __se_sys_openat fs/open.c:1454 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1454
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc7d758ca61
RSP: 002b:00007fc7d78cfd40 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00000000000010f1 RCX: 00007fc7d758ca61
RDX: 0000000000090800 RSI: 00007fc7d760e5c0 RDI: 00000000ffffff9c
RBP: 00007fc7d78cfdec R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000868
R13: 0000000000000000 R14: 00000000000b7425 R15: 00007fc7d78cfe40
 </TASK>
INFO: task syz-executor:11369 blocked for more than 159 seconds.
      Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D
 stack:20208 pid:11369 tgid:11369 ppid:1      task_flags:0x400140 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
 kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1160
 lookup_fast+0x237/0x590
 walk_component fs/namei.c:2110 [inline]
 link_path_walk+0x672/0xea0 fs/namei.c:2479
 path_openat+0x266/0x3590 fs/namei.c:3985
 do_filp_open+0x27f/0x4e0 fs/namei.c:4016
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
 do_sys_open fs/open.c:1443 [inline]
 __do_sys_openat fs/open.c:1459 [inline]
 __se_sys_openat fs/open.c:1454 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1454
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff894f8ca61
RSP: 002b:00007ff8952cfd40 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000d83 RCX: 00007ff894f8ca61
RDX: 0000000000090800 RSI: 00007ff89500e5c0 RDI: 00000000ffffff9c
RBP: 00007ff8952cfdec R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000287 R12: 00000000000006b6
R13: 0000000000000000 R14: 00000000000b7357 R15: 00007ff8952cfe40
 </TASK>
INFO: task modprobe:28930 blocked for more than 161 seconds.
      Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:modprobe        state:D
 stack:21816 pid:28930 tgid:28930 ppid:4773   task_flags:0x400000 flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
 kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1160
 lookup_fast+0x237/0x590
 walk_component fs/namei.c:2110 [inline]
 link_path_walk+0x672/0xea0 fs/namei.c:2479
 path_lookupat+0xa9/0x450 fs/namei.c:2635
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 user_statfs fs/statfs.c:103 [inline]
 __do_sys_statfs fs/statfs.c:193 [inline]
 __se_sys_statfs+0xda/0x220 fs/statfs.c:190
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7b7e46268a
RSP: 002b:00007ffcac081f38 EFLAGS: 00000246
 ORIG_RAX: 0000000000000089
RAX: ffffffffffffffda RBX: 00007f7b7e3874f8 RCX: 00007f7b7e46268a
RDX: 00007f7b7e38919c RSI: 00007ffcac081fb0 RDI: 00007f7b7e37f723
RBP: 00007f7b7e37f723 R08: 0000000000000000 R09: 000000000000000d
R10: 00007ffcac081d60 R11: 0000000000000246 R12: 00007ffcac081fb0
R13: 00007ffcac082128 R14: 00007ffcac082150 R15: 0000000000000000
 </TASK>
INFO: task modprobe:28947 blocked for more than 162 seconds.
      Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:modprobe        state:D
 stack:22848 pid:28947 tgid:28947 ppid:3499   task_flags:0x400000 flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
 kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1160
 lookup_fast+0x237/0x590
 walk_component fs/namei.c:2110 [inline]
 link_path_walk+0x672/0xea0 fs/namei.c:2479
 path_lookupat+0xa9/0x450 fs/namei.c:2635
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 user_statfs fs/statfs.c:103 [inline]
 __do_sys_statfs fs/statfs.c:193 [inline]
 __se_sys_statfs+0xda/0x220 fs/statfs.c:190
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe5a612b68a
RSP: 002b:00007ffdd1c73b48 EFLAGS: 00000246
 ORIG_RAX: 0000000000000089
RAX: ffffffffffffffda RBX: 00007fe5a60504f8 RCX: 00007fe5a612b68a
RDX: 00007fe5a605219c RSI: 00007ffdd1c73bc0 RDI: 00007fe5a6048723
RBP: 00007fe5a6048723 R08: 0000000000000000 R09: 000000000000000d
R10: 00007ffdd1c73970 R11: 0000000000000246 R12: 00007ffdd1c73bc0
R13: 00007ffdd1c73d38 R14: 00007ffdd1c73d60 R15: 0000000000000000
 </TASK>
INFO: task syz-executor:28957 blocked for more than 142 seconds.
      Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:23776 pid:28957 tgid:28957 ppid:5824   task_flags:0x400000 flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
 kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1160
 lookup_fast+0x237/0x590
 walk_component fs/namei.c:2110 [inline]
 link_path_walk+0x672/0xea0 fs/namei.c:2479
 path_openat+0x266/0x3590 fs/namei.c:3985
 do_filp_open+0x27f/0x4e0 fs/namei.c:4016
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
 do_sys_open fs/open.c:1443 [inline]
 __do_sys_openat fs/open.c:1459 [inline]
 __se_sys_openat fs/open.c:1454 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1454
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f215a58ba51
RSP: 002b:00007ffc6c62f460 EFLAGS: 00000202
 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f215a58ba51
RDX: 0000000000000002 RSI: 00007f215a60e345 RDI: 00000000ffffff9c
RBP: 00007f215a60e345 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
 </TASK>
INFO: task syz-executor:28958 blocked for more than 143 seconds.
      Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D
 stack:23776 pid:28958 tgid:28958 ppid:5824   task_flags:0x400000 flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
 kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1160
 lookup_fast+0x237/0x590
 walk_component fs/namei.c:2110 [inline]
 link_path_walk+0x672/0xea0 fs/namei.c:2479
 path_openat+0x266/0x3590 fs/namei.c:3985
 do_filp_open+0x27f/0x4e0 fs/namei.c:4016
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
 do_sys_open fs/open.c:1443 [inline]
 __do_sys_openat fs/open.c:1459 [inline]
 __se_sys_openat fs/open.c:1454 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1454
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f566578ba51
RSP: 002b:00007ffd41406cb0 EFLAGS: 00000202
 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f566578ba51
RDX: 0000000000000002 RSI: 00007f566580e345 RDI: 00000000ffffff9c
RBP: 00007f566580e345 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
 </TASK>
INFO: task syz-executor:28959 blocked for more than 144 seconds.
      Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D
 stack:23776 pid:28959 tgid:28959 ppid:5824   task_flags:0x400000 flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6765

Crashes (120):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/12 21:56 upstream 0fed89a961ea 1a5d9317 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in kernfs_dop_revalidate
2025/01/13 03:44 upstream be548645527a 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in kernfs_dop_revalidate
2024/12/03 06:33 upstream cdd30ebb1b9f 578925bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in kernfs_dop_revalidate
2024/11/27 18:57 upstream aaf20f870da0 5df23865 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in kernfs_dop_revalidate
2024/11/09 14:16 upstream da4373fbcf00 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in kernfs_dop_revalidate
2024/10/16 06:32 upstream 2f87d0916ce0 bde2d81c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in kernfs_dop_revalidate
2024/07/25 11:57 upstream c33ffdb70cc6 b24754ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in kernfs_dop_revalidate
2024/05/31 12:43 upstream 4a4be1ad3a6e 34889ee3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in kernfs_dop_revalidate
2024/05/25 17:22 upstream 56fb6f92854f a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in kernfs_dop_revalidate
2025/08/08 01:36 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing d632ab86aff2 04cffc22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/08/04 00:33 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 51d4b0a44c82 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/08/03 02:52 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 51d4b0a44c82 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/08/02 07:28 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 51d4b0a44c82 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/08/01 23:22 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 51d4b0a44c82 40127d41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/08/01 01:44 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 51d4b0a44c82 0c075d67 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/07/27 07:33 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 51d4b0a44c82 fb8f743d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/07/17 21:19 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing f72b9aa821a2 0d1223f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/07/17 08:53 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 300386d117a9 44f8051e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/07/15 06:55 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing b4b4dbfa96de 03fcfc4b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/07/11 10:30 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing b4b4dbfa96de 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/06/29 13:45 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing e35a5d814525 fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/06/19 05:52 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing e04c78d86a96 ed3e87f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/06/18 14:38 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing e04c78d86a96 ed3e87f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/06/15 03:11 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 19272b37aa4f 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/06/12 03:56 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 19272b37aa4f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/05/27 06:45 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 882826f58b2c 874a1386 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/05/19 11:33 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing ab6dc9a6c721 b84f0537 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/04/22 01:29 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing f41f7b3d9daf 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/04/13 12:00 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 169263214645 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/04/09 22:31 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 0af2f6be1b42 988b336c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/04/08 10:09 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 0af2f6be1b42 a775275d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/03/25 07:20 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing ed492c95f13a 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/03/13 11:18 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 28a76fcc4c85 44be8b44 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/03/07 15:54 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing b331a3d8097f 7e3bd60d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/02/24 16:11 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing c749f058b437 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/02/21 15:37 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing c749f058b437 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/02/20 19:33 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing a34983057926 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/02/16 23:19 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 257a087c8b52 40a34ec9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/02/11 07:25 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 9682c35ff6ec 43f51a00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/02/04 05:22 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 9682c35ff6ec 8f267cef .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/01/24 09:39 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 70cd0576aa39 521b0ce3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/01/22 15:07 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 70cd0576aa39 a44b0418 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/01/22 05:25 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 70cd0576aa39 da72ac06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/01/11 19:53 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 594c82329eef 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/01/08 19:39 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing f1a2241778d9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/01/08 10:43 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing f1a2241778d9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2025/01/07 15:06 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing f1a2241778d9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2024/12/26 18:32 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing d7123c77dc60 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2024/12/26 15:03 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing d7123c77dc60 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2024/12/21 14:57 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 362a7993ed01 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2024/12/19 04:10 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 362a7993ed01 1432fc84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2024/12/18 04:44 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 362a7993ed01 a0626d3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2024/12/17 16:20 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 362a7993ed01 f93b2b55 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2024/12/17 13:10 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 362a7993ed01 f93b2b55 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2024/12/07 18:34 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing d8d936c51388 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2024/11/30 01:33 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 237d4e0f4113 68914665 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2024/11/11 07:05 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing de9df030ccb5 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in kernfs_dop_revalidate
2024/10/15 23:48 linux-next b852e1e7a038 bde2d81c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in kernfs_dop_revalidate
* Struck through repros no longer work on HEAD.