syzbot

 sign-in | mailing list | source | docs
🐞 Open [1226]
≡ Subsystems
🐞 Fixed [5626]
🐞 Invalid [13553]
⬇ Missing Backports [97]
Kernel Health Bugs/Month Bug Lifetimes Fuzzing Crashes
Total Repo Heatmap Subsystems Heatmap
💬 Send us feedback

INFO: task hung in lookup_slow (3)

Status: upstream: reported C repro on 2022/11/11 00:21
Subsystems: fs
[Documentation on labels]
Reported-by: syzbot+7cfc6a4f6b025f710423@syzkaller.appspotmail.com
First crash: 812d, last: 53m
Cause bisection: introduced by (bisect log) [ignored commit]:
commit 47b7acfb016b9fdc950cb501c351faf5723b1868
Author: Menglong Dong <imagedong@tencent.com>
Date: Mon Jul 10 09:47:47 2023 +0000

  bnxt_en: use dev_consume_skb_any() in bnxt_tx_int

Crash: INFO: task hung in lookup_slow (log)
Repro: syz .config
  
▶ ▼ Discussions (8)
Title Replies (including bot) Last reply
[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] Monthly arm report (May 2024) 0 (1) 2024/05/31 06:50
[syzbot] Monthly arm report (Apr 2024) 0 (1) 2024/04/30 07:12
[syzbot] Monthly exfat report (Mar 2024) 0 (1) 2024/03/06 22:08
Re: [syzbot] Monthly fuse report 2 (2) 2023/04/14 15:09
[syzbot] Monthly fuse report 0 (1) 2023/04/05 09:00
[syzbot] INFO: task hung in lookup_slow (3) 0 (1) 2022/11/11 00:21
▶ ▼ Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in lookup_slow (2) fs 2 1842d 1854d 0/27 auto-closed as invalid on 2019/11/26 02:54
upstream INFO: task hung in lookup_slow exfat 148 2063d 2356d 0/27 closed as dup on 2018/09/08 15:36
linux-6.1 INFO: task hung in lookup_slow 14 26d 151d 0/3 upstream: reported on 2024/04/14 05:59
linux-5.15 INFO: task hung in lookup_slow (2) 34 5d11h 150d 0/3 upstream: reported on 2024/04/15 04:02
android-49 INFO: task hung in lookup_slow syz 36 1868d 1978d 0/3 public: reported syz repro on 2019/04/14 08:51
linux-4.14 INFO: task hung in lookup_slow C error 1 741d 771d 0/1 upstream: reported C repro on 2022/08/03 08:46
linux-4.19 INFO: task hung in lookup_slow 1 1550d 1550d 0/1 auto-closed as invalid on 2020/10/13 00:17
linux-5.15 INFO: task hung in lookup_slow 2 514d 519d 0/3 auto-obsoleted due to no activity on 2023/08/15 05:05
▶ ▼ Last patch testing requests (5)
Created Duration User Patch Repo Result
2024/03/10 03:26 19m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2024/02/12 19:47 17m retest repro upstream report log
2023/11/10 01:19 20m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2023/08/31 23:59 20m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2022/11/11 03:46 18m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git bbed346d5a96 OK log

Sample crash report:
INFO: task syz-executor137:5275 blocked for more than 143 seconds.
      Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor137 state:D stack:28848 pid:5275  tgid:5263  ppid:5257   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
 __down_read_common kernel/locking/rwsem.c:1250 [inline]
 __down_read kernel/locking/rwsem.c:1263 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
 inode_lock_shared include/linux/fs.h:810 [inline]
 lookup_slow+0x45/0x70 fs/namei.c:1734
 walk_component+0x2e1/0x410 fs/namei.c:2039
 lookup_last fs/namei.c:2542 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2566
 filename_lookup+0x256/0x610 fs/namei.c:2595
 user_path_at+0x3a/0x60 fs/namei.c:3002
 do_mount fs/namespace.c:3809 [inline]
 __do_sys_mount fs/namespace.c:4020 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:3997
 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: 0033:0x7fe352038dc9
RSP: 002b:00007fe351fcd228 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe3520ca6b8 RCX: 00007fe352038dc9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000000
RBP: 00007fe3520ca6b0 R08: 0000000000000000 R09: 00007fe351fcd6c0
R10: 0000000000001000 R11: 0000000000000246 R12: 00007fe3520ca6bc
R13: 00007fe35208d160 R14: 0030656c69662f2e R15: 00007ffeee3055a8
 </TASK>
INFO: task syz-executor137:5279 blocked for more than 144 seconds.
      Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor137 state:D stack:28504 pid:5279  tgid:5264  ppid:5258   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
 __down_read_common kernel/locking/rwsem.c:1250 [inline]
 __down_read kernel/locking/rwsem.c:1263 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
 inode_lock_shared include/linux/fs.h:810 [inline]
 lookup_slow+0x45/0x70 fs/namei.c:1734
 walk_component+0x2e1/0x410 fs/namei.c:2039
 lookup_last fs/namei.c:2542 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2566
 filename_lookup+0x256/0x610 fs/namei.c:2595
 user_path_at+0x3a/0x60 fs/namei.c:3002
 do_mount fs/namespace.c:3809 [inline]
 __do_sys_mount fs/namespace.c:4020 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:3997
 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: 0033:0x7fe352038dc9
RSP: 002b:00007fe351fcd228 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe3520ca6b8 RCX: 00007fe352038dc9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000000
RBP: 00007fe3520ca6b0 R08: 0000000000000000 R09: 00007fe351fcd6c0
R10: 0000000000001000 R11: 0000000000000246 R12: 00007fe3520ca6bc
R13: 00007fe35208d160 R14: 0030656c69662f2e R15: 00007ffeee3055a8
 </TASK>
INFO: task syz-executor137:5278 blocked for more than 145 seconds.
      Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor137 state:D stack:28848 pid:5278  tgid:5265  ppid:5259   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
 __down_read_common kernel/locking/rwsem.c:1250 [inline]
 __down_read kernel/locking/rwsem.c:1263 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
 inode_lock_shared include/linux/fs.h:810 [inline]
 lookup_slow+0x45/0x70 fs/namei.c:1734
 walk_component+0x2e1/0x410 fs/namei.c:2039
 lookup_last fs/namei.c:2542 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2566
 filename_lookup+0x256/0x610 fs/namei.c:2595
 user_path_at+0x3a/0x60 fs/namei.c:3002
 do_mount fs/namespace.c:3809 [inline]
 __do_sys_mount fs/namespace.c:4020 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:3997
 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: 0033:0x7fe352038dc9
RSP: 002b:00007fe351fcd228 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe3520ca6b8 RCX: 00007fe352038dc9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000000
RBP: 00007fe3520ca6b0 R08: 0000000000000000 R09: 00007fe351fcd6c0
R10: 0000000000001000 R11: 0000000000000246 R12: 00007fe3520ca6bc
R13: 00007fe35208d160 R14: 0030656c69662f2e R15: 00007ffeee3055a8
 </TASK>
INFO: task syz-executor137:5276 blocked for more than 145 seconds.
      Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor137 state:D stack:28216 pid:5276  tgid:5266  ppid:5260   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
 __down_read_common kernel/locking/rwsem.c:1250 [inline]
 __down_read kernel/locking/rwsem.c:1263 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
 inode_lock_shared include/linux/fs.h:810 [inline]
 lookup_slow+0x45/0x70 fs/namei.c:1734
 walk_component+0x2e1/0x410 fs/namei.c:2039
 lookup_last fs/namei.c:2542 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2566
 filename_lookup+0x256/0x610 fs/namei.c:2595
 user_path_at+0x3a/0x60 fs/namei.c:3002
 do_mount fs/namespace.c:3809 [inline]
 __do_sys_mount fs/namespace.c:4020 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:3997
 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: 0033:0x7fe352038dc9
RSP: 002b:00007fe351fcd228 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe3520ca6b8 RCX: 00007fe352038dc9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000000
RBP: 00007fe3520ca6b0 R08: 0000000000000000 R09: 00007fe351fcd6c0
R10: 0000000000001000 R11: 0000000000000246 R12: 00007fe3520ca6bc
R13: 00007fe35208d160 R14: 0030656c69662f2e R15: 00007ffeee3055a8
 </TASK>
INFO: task syz-executor137:5277 blocked for more than 146 seconds.
      Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor137 state:D stack:28848 pid:5277  tgid:5267  ppid:5261   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
 __down_read_common kernel/locking/rwsem.c:1250 [inline]
 __down_read kernel/locking/rwsem.c:1263 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
 inode_lock_shared include/linux/fs.h:810 [inline]
 lookup_slow+0x45/0x70 fs/namei.c:1734
 walk_component+0x2e1/0x410 fs/namei.c:2039
 lookup_last fs/namei.c:2542 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2566
 filename_lookup+0x256/0x610 fs/namei.c:2595
 user_path_at+0x3a/0x60 fs/namei.c:3002
 do_mount fs/namespace.c:3809 [inline]
 __do_sys_mount fs/namespace.c:4020 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:3997
 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: 0033:0x7fe352038dc9
RSP: 002b:00007fe351fcd228 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe3520ca6b8 RCX: 00007fe352038dc9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000000
RBP: 00007fe3520ca6b0 R08: 0000000000000000 R09: 00007fe351fcd6c0
R10: 0000000000001000 R11: 0000000000000246 R12: 00007fe3520ca6bc
R13: 00007fe35208d160 R14: 0030656c69662f2e R15: 00007ffeee3055a8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
 #0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
1 lock held by kswapd0/89:
2 locks held by getty/4981:
 #0: ffff8880309c60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000311b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor137/5270:
1 lock held by syz-executor137/5275:
 #0: ffff8880768f8c00 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:810 [inline]
 #0: ffff8880768f8c00 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734
1 lock held by syz-executor137/5272:
1 lock held by syz-executor137/5279:
 #0: ffff88807fbbc180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:810 [inline]
 #0: ffff88807fbbc180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734
5 locks held by syz-executor137/5268:
1 lock held by syz-executor137/5278:
 #0: ffff8880768f8180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:810 [inline]
 #0: ffff8880768f8180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734
1 lock held by syz-executor137/5269:
1 lock held by syz-executor137/5276:
 #0: ffff8880768f9140 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:810 [inline]
 #0: ffff8880768f9140 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734
1 lock held by syz-executor137/5271:
1 lock held by syz-executor137/5277:
 #0: ffff8880768f86c0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:810 [inline]
 #0: ffff8880768f86c0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xff4/0x1040 kernel/hung_task.c:379
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5270 Comm: syz-executor137 Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__read_once_word_nocheck+0xc/0x20 include/asm-generic/rwonce.h:67
Code: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 53 48 89 fb e8 77 2d 52 00 48 8b 03 <5b> c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90
RSP: 0018:ffffc90003816cf8 EFLAGS: 00000293
RAX: ffffffff81f46d28 RBX: ffffc900038175e0 RCX: ffff8880319e1e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffc900038175e0
RBP: 1ffff92000702dbe R08: ffffffff814137ed R09: ffffffff81413746
R10: 0000000000000003 R11: ffff8880319e1e00 R12: ffffc900038175e0
R13: dffffc0000000000 R14: 1ffff92000702dbd R15: 1ffff92000702dbc
FS:  00007fe351fee6c0(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e1a7460680 CR3: 000000002f9e6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline]
 unwind_next_frame+0x1356/0x2a00 arch/x86/kernel/unwind_orc.c:585
 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 save_stack+0xfb/0x1f0 mm/page_owner.c:156
 __set_page_owner+0x92/0x800 mm/page_owner.c:320
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1500
 prep_new_page mm/page_alloc.c:1508 [inline]
 get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3446
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4702
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2263
 alloc_pages_noprof mm/mempolicy.c:2343 [inline]
 folio_alloc_noprof+0x128/0x180 mm/mempolicy.c:2350
 filemap_alloc_folio_noprof+0xdf/0x500 mm/filemap.c:1008
 do_read_cache_folio+0xed/0x820 mm/filemap.c:3753
 do_read_cache_page+0x30/0x200 mm/filemap.c:3855
 read_mapping_page include/linux/pagemap.h:907 [inline]
 dir_get_page fs/sysv/dir.c:64 [inline]
 sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
 sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
 sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
 lookup_open fs/namei.c:3556 [inline]
 open_last_lookups fs/namei.c:3647 [inline]
 path_openat+0x11cc/0x3470 fs/namei.c:3883
 do_filp_open+0x235/0x490 fs/namei.c:3913
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
 do_sys_open fs/open.c:1431 [inline]
 __do_sys_open fs/open.c:1439 [inline]
 __se_sys_open fs/open.c:1435 [inline]
 __x64_sys_open+0x225/0x270 fs/open.c:1435
 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: 0033:0x7fe352038dc9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 00 00 90 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe351fee228 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fe3520ca6a8 RCX: 00007fe352038dc9
RDX: 0000000000000000 RSI: 00000000001a18fd RDI: 00000000200000c0
RBP: 00007fe3520ca6a0 R08: 00007fe351fee6c0 R09: 00007fe351fee6c0
R10: 0000000000009e7f R11: 0000000000000246 R12: 00007fe3520ca6ac
R13: 00007fe35208d160 R14: 0030656c69662f2e R15: 00007ffeee3055a8
 </TASK>

Crashes (1397):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/11 03:31 upstream 8d8d276ba2fb 86aa7bd7 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs INFO: task hung in lookup_slow
2022/11/07 00:02 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bbed346d5a96 6d752409 .config console log report syz C [disk image] [vmlinux] ci-upstream-gce-arm64 INFO: task hung in lookup_slow
2024/01/15 05:21 upstream 052d534373b7 551587c1 .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/12 15:10 upstream 77f587896757 60e1a995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/12 13:21 upstream 77f587896757 60e1a995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/12 12:17 upstream 77f587896757 60e1a995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/12 07:58 upstream 7c6a3a65ace7 d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/12 06:05 upstream 7c6a3a65ace7 d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/12 04:02 upstream 7c6a3a65ace7 d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in lookup_slow
2024/09/11 22:58 upstream 7c6a3a65ace7 d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/11 20:45 upstream 7c6a3a65ace7 d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/11 17:21 upstream 8d8d276ba2fb 8ab55d0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/11 16:09 upstream 8d8d276ba2fb 8ab55d0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/11 15:08 upstream 8d8d276ba2fb 8ab55d0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/11 13:04 upstream 8d8d276ba2fb 8ab55d0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/11 11:12 upstream 8d8d276ba2fb 8ab55d0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/11 07:58 upstream 8d8d276ba2fb 8ab55d0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/11 06:41 upstream 8d8d276ba2fb 8ab55d0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/11 05:25 upstream 8d8d276ba2fb 8ab55d0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/11 00:50 upstream 8d8d276ba2fb 86aa7bd7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/10 22:34 upstream 8d8d276ba2fb 86aa7bd7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/10 19:31 upstream 8d8d276ba2fb 86aa7bd7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/10 15:54 upstream bc83b4d1f086 86aa7bd7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/10 14:20 upstream bc83b4d1f086 784df80e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/10 12:23 upstream bc83b4d1f086 784df80e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/09 19:42 upstream da3ea35007d0 073f8be2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/09 11:29 upstream da3ea35007d0 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/09 10:51 upstream da3ea35007d0 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/09 03:58 upstream 89f5e14d05b4 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/09 01:12 upstream 89f5e14d05b4 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/08 22:51 upstream 89f5e14d05b4 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/08 20:54 upstream 89f5e14d05b4 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/08 16:29 upstream d1f2d51b711a 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/08 11:19 upstream d1f2d51b711a 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/08 10:18 upstream d1f2d51b711a 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/08 08:20 upstream d1f2d51b711a 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/08 06:22 upstream d1f2d51b711a 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/08 04:57 upstream d1f2d51b711a 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/08 01:55 upstream d1f2d51b711a 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/07 16:43 upstream b31c44928842 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/07 14:29 upstream b31c44928842 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/07 13:14 upstream b31c44928842 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/07 11:04 upstream b31c44928842 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/07 09:34 upstream b31c44928842 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/07 08:17 upstream b31c44928842 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/07 07:14 upstream b31c44928842 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/06 23:43 upstream b831f83e40a2 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/06 22:36 upstream b831f83e40a2 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/06 20:16 upstream b831f83e40a2 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/06 17:42 upstream b831f83e40a2 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/06 09:51 upstream ad618736883b 464ac2ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in lookup_slow
2024/09/06 08:44 upstream ad618736883b 464ac2ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/06 06:48 upstream ad618736883b 464ac2ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/06 04:21 upstream ad618736883b 464ac2ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/09/05 19:34 upstream c763c4339688 464ac2ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2024/06/25 21:48 upstream 55027e689933 da0bd5ca .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in lookup_slow
2022/06/23 10:39 upstream 3abc3ae553c7 912f5df7 .config console log report info ci-upstream-kasan-gce-smack-root INFO: task hung in lookup_slow
2024/08/15 10:42 linux-next edd1ec2e3a9f e4bacdaf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in lookup_slow
2024/08/31 02:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci df54f4a16f82 f885a8ff .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: task hung in lookup_slow
* Struck through repros no longer work on HEAD.