INFO: task udevd:2843 blocked for more than 143 seconds.
      Not tainted 6.14.0-rc6-syzkaller-g28a76fcc4c85 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D
 stack:24096 pid:2843  tgid:2843  ppid:1      task_flags:0x400140 flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x113d/0x35d0 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x124/0x330 kernel/locking/rwsem.c:1526
 kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1160
 d_revalidate fs/namei.c:928 [inline]
 d_revalidate fs/namei.c:924 [inline]
 lookup_fast+0x260/0x5f0 fs/namei.c:1754
 walk_component+0x5b/0x5b0 fs/namei.c:2110
 link_path_walk.part.0.constprop.0+0x669/0xd40 fs/namei.c:2479
 link_path_walk fs/namei.c:2410 [inline]
 path_lookupat+0x93/0x770 fs/namei.c:2635
 filename_lookup+0x221/0x5f0 fs/namei.c:2665
 do_readlinkat+0xcf/0x390 fs/stat.c:564
 __do_sys_readlink fs/stat.c:601 [inline]
 __se_sys_readlink fs/stat.c:598 [inline]
 __x64_sys_readlink+0x78/0xc0 fs/stat.c:598
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5fa9b69d47
RSP: 002b:00007ffd02d95f58 EFLAGS: 00000246
 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 00007ffd02d95f68 RCX: 00007f5fa9b69d47
RDX: 0000000000000400 RSI: 00007ffd02d95f68 RDI: 00007ffd02d96448
RBP: 0000000000000400 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd02d96448
R13: 00007ffd02d963b8 R14: 00005634251672c0 R15: 0000000000000000
 </TASK>
INFO: task udevd:5214 blocked for more than 143 seconds.
      Not tainted 6.14.0-rc6-syzkaller-g28a76fcc4c85 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D
 stack:24096 pid:5214  tgid:5214  ppid:2843   task_flags:0x400140 flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x113d/0x35d0 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
 __mutex_lock_common kernel/locking/mutex.c:662 [inline]
 __mutex_lock+0x6bd/0xb10 kernel/locking/mutex.c:730
 device_lock include/linux/device.h:1030 [inline]
 uevent_show+0x188/0x3b0 drivers/base/core.c:2730
 dev_attr_show+0x53/0xe0 drivers/base/core.c:2424
 sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
 seq_read_iter+0x4f4/0x12b0 fs/seq_file.c:230
 kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
 new_sync_read fs/read_write.c:484 [inline]
 vfs_read+0x886/0xbf0 fs/read_write.c:565
 ksys_read+0x12b/0x250 fs/read_write.c:708
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5fa9b68b6a
RSP: 002b:00007ffd02d8ef78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000563425199f30 RCX: 00007f5fa9b68b6a
RDX: 0000000000001000 RSI: 0000563425242860 RDI: 0000000000000008
RBP: 0000563425199f30 R08: 0000000000000008 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffd02d8f458 R15: 000000000000000a
 </TASK>
INFO: task udevd:5364 blocked for more than 145 seconds.
      Not tainted 6.14.0-rc6-syzkaller-g28a76fcc4c85 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D
 stack:24304 pid:5364  tgid:5364  ppid:2843   task_flags:0x400140 flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x113d/0x35d0 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
 __mutex_lock_common kernel/locking/mutex.c:662 [inline]
 __mutex_lock+0x6bd/0xb10 kernel/locking/mutex.c:730
 device_lock include/linux/device.h:1030 [inline]
 uevent_show+0x188/0x3b0 drivers/base/core.c:2730
 dev_attr_show+0x53/0xe0 drivers/base/core.c:2424
 sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
 seq_read_iter+0x4f4/0x12b0 fs/seq_file.c:230
 kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
 new_sync_read fs/read_write.c:484 [inline]
 vfs_read+0x886/0xbf0 fs/read_write.c:565
 ksys_read+0x12b/0x250 fs/read_write.c:708
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5fa9b68b6a
RSP: 002b:00007ffd02d8ef78 EFLAGS: 00000246
 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000563425199f30 RCX: 00007f5fa9b68b6a
RDX: 0000000000001000 RSI: 00005634252220d0 RDI: 0000000000000008
RBP: 0000563425199f30 R08: 0000000000000008 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffd02d8f458 R15: 000000000000000a
 </TASK>

Showing all locks held in the system:
10 locks held by kworker/1:0/25:
1 lock held by khungtaskd/31:
 #0: 
ffffffff88ebe8c0
 (
rcu_read_lock
){....}-{1:3}