INFO: task hung in kernfs_iop_get

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in kernfs_iop_get_link (2) kernfs				1	124d	124d	0/28	auto-obsoleted due to no activity on 2024/11/25 11:04

INFO: task udevd:3907 blocked for more than 143 seconds. Not tainted 5.3.0-rc2 #54 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. udevd D21544 3907 1 0x00004000 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x8b6/0xcd0 kernel/sched/core.c:3880 schedule+0x131/0x1e0 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common+0x12bf/0x2990 kernel/locking/mutex.c:1007 __mutex_lock kernel/locking/mutex.c:1077 [inline] mutex_lock_nested+0x1b/0x30 kernel/locking/mutex.c:1092 kernfs_getlink fs/kernfs/symlink.c:119 [inline] kernfs_iop_get_link+0xf9/0x5d0 fs/kernfs/symlink.c:138 vfs_readlink+0x185/0x410 fs/namei.c:4736 do_readlinkat+0x29f/0x3d0 fs/stat.c:411 __do_sys_readlink fs/stat.c:432 [inline] __se_sys_readlink fs/stat.c:429 [inline] __x64_sys_readlink+0x7f/0x90 fs/stat.c:429 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f17c57d2577 Code: Bad RIP value. RSP: 002b:00007fff5fe8fd38 EFLAGS: 00000246 ORIG_RAX: 0000000000000059 RAX: ffffffffffffffda RBX: 0000000001db1250 RCX: 00007f17c57d2577 RDX: 0000000000000400 RSI: 00007fff5fe8fd40 RDI: 00007fff5fe90220 RBP: 00007fff5fe90a80 R08: 00007fff5fe90a80 R09: 00007f17c5826de0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff5fe90220 R13: 0000000000000400 R14: 000000000237fc60 R15: 0000000001db1250 INFO: task syz-executor.5:9748 blocked for more than 146 seconds. Not tainted 5.3.0-rc2 #54 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D20328 9748 9747 0x00004000 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x8b6/0xcd0 kernel/sched/core.c:3880 schedule+0x131/0x1e0 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common+0x12bf/0x2990 kernel/locking/mutex.c:1007 __mutex_lock kernel/locking/mutex.c:1077 [inline] mutex_lock_nested+0x1b/0x30 kernel/locking/mutex.c:1092 kernfs_iop_permission+0x62/0xa0 fs/kernfs/inode.c:283 do_inode_permission fs/namei.c:384 [inline] inode_permission+0x279/0x580 fs/namei.c:449 may_lookup fs/namei.c:1700 [inline] link_path_walk+0x26b/0x14e0 fs/namei.c:2082 path_mountpoint+0x3f1/0x750 fs/namei.c:2692 filename_mountpoint+0x221/0x670 fs/namei.c:2715 user_path_mountpoint_at+0x39/0x50 fs/namei.c:2745 ksys_umount+0x169/0x10a0 fs/namespace.c:1680 __do_sys_umount fs/namespace.c:1706 [inline] __se_sys_umount fs/namespace.c:1704 [inline] __x64_sys_umount+0x5a/0x70 fs/namespace.c:1704 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c257 Code: Bad RIP value. RSP: 002b:00007ffe97db3748 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: ffffffffffffffda RBX: 0000000000229a78 RCX: 000000000045c257 RDX: 0000000000403520 RSI: 0000000000000002 RDI: 00007ffe97db37f0 RBP: 0000000000005bb5 R08: 0000000000000000 R09: 0000000000000011 R10: 000000000000000a R11: 0000000000000202 R12: 00007ffe97db4880 R13: 0000555556abf940 R14: 0000000000000000 R15: 00007ffe97db4880 INFO: task kworker/0:1:22738 blocked for more than 149 seconds. Not tainted 5.3.0-rc2 #54 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:1 D26216 22738 2 0x80004000 Workqueue: events kernfs_notify_workfn Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x8b6/0xcd0 kernel/sched/core.c:3880 schedule+0x131/0x1e0 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common+0x12bf/0x2990 kernel/locking/mutex.c:1007