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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: 1053d, last: 40m
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 2084d 2096d 0/28 auto-closed as invalid on 2019/11/26 02:54
upstream INFO: task hung in lookup_slow exfat 148 2305d 2598d 0/28 closed as dup on 2018/09/08 15:36
linux-6.1 INFO: task hung in lookup_slow origin:upstream missing-backport C 26 1d04h 393d 0/3 upstream: reported C repro on 2024/04/14 05:59
linux-5.15 INFO: task hung in lookup_slow (2) origin:upstream C error 52 75d 392d 0/3 upstream: reported C repro on 2024/04/15 04:02
android-49 INFO: task hung in lookup_slow syz 36 2110d 2219d 0/3 public: reported syz repro on 2019/04/14 08:51
linux-4.14 INFO: task hung in lookup_slow C error 1 982d 1012d 0/1 upstream: reported C repro on 2022/08/03 08:46
linux-4.19 INFO: task hung in lookup_slow 1 1792d 1792d 0/1 auto-closed as invalid on 2020/10/13 00:17
linux-5.15 INFO: task hung in lookup_slow 2 756d 761d 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-executor448:5850 blocked for more than 143 seconds.
      Not tainted 6.14.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor448 state:D stack:27992 pid:5850  tgid:5833  ppid:5828   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x18bc/0x4c40 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
 inode_lock_shared include/linux/fs.h:887 [inline]
 lookup_slow+0x45/0x70 fs/namei.c:1809
 walk_component+0x2e1/0x410 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2636
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 do_mount fs/namespace.c:3897 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:4088
 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: 0033:0x7f93ae260e09
RSP: 002b:00007f93ae1f6218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f93ae2f26b8 RCX: 00007f93ae260e09
RDX: 0000000000000000 RSI: 0000400000000140 RDI: 0000000000000000
RBP: 00007f93ae2f26b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000246 R12: 0000400000000000
R13: 0000400000000100 R14: 0000400000000140 R15: 0030656c69662f2e
 </TASK>
INFO: task syz-executor448:5846 blocked for more than 144 seconds.
      Not tainted 6.14.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor448 state:D stack:28184 pid:5846  tgid:5834  ppid:5829   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x18bc/0x4c40 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
 inode_lock_shared include/linux/fs.h:887 [inline]
 lookup_slow+0x45/0x70 fs/namei.c:1809
 walk_component+0x2e1/0x410 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2636
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 do_mount fs/namespace.c:3897 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:4088
 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: 0033:0x7f93ae260e09
RSP: 002b:00007f93ae1f6218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f93ae2f26b8 RCX: 00007f93ae260e09
RDX: 0000000000000000 RSI: 0000400000000140 RDI: 0000000000000000
RBP: 00007f93ae2f26b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000246 R12: 0000400000000000
R13: 0000400000000100 R14: 0000400000000140 R15: 0030656c69662f2e
 </TASK>
INFO: task syz-executor448:5849 blocked for more than 145 seconds.
      Not tainted 6.14.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor448 state:D stack:28816 pid:5849  tgid:5836  ppid:5830   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x18bc/0x4c40 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
 inode_lock_shared include/linux/fs.h:887 [inline]
 lookup_slow+0x45/0x70 fs/namei.c:1809
 walk_component+0x2e1/0x410 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2636
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 do_mount fs/namespace.c:3897 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:4088
 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: 0033:0x7f93ae260e09
RSP: 002b:00007f93ae1f6218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f93ae2f26b8 RCX: 00007f93ae260e09
RDX: 0000000000000000 RSI: 0000400000000140 RDI: 0000000000000000
RBP: 00007f93ae2f26b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000246 R12: 0000400000000000
R13: 0000400000000100 R14: 0000400000000140 R15: 0030656c69662f2e
 </TASK>
INFO: task syz-executor448:5848 blocked for more than 146 seconds.
      Not tainted 6.14.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor448 state:D stack:28816 pid:5848  tgid:5837  ppid:5832   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x18bc/0x4c40 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
 inode_lock_shared include/linux/fs.h:887 [inline]
 lookup_slow+0x45/0x70 fs/namei.c:1809
 walk_component+0x2e1/0x410 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2636
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 do_mount fs/namespace.c:3897 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:4088
 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: 0033:0x7f93ae260e09
RSP: 002b:00007f93ae1f6218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f93ae2f26b8 RCX: 00007f93ae260e09
RDX: 0000000000000000 RSI: 0000400000000140 RDI: 0000000000000000
RBP: 00007f93ae2f26b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000246 R12: 0000400000000000
R13: 0000400000000100 R14: 0000400000000140 R15: 0030656c69662f2e
 </TASK>
INFO: task syz-executor448:5851 blocked for more than 147 seconds.
      Not tainted 6.14.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor448 state:D stack:28816 pid:5851  tgid:5838  ppid:5831   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x18bc/0x4c40 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
 inode_lock_shared include/linux/fs.h:887 [inline]
 lookup_slow+0x45/0x70 fs/namei.c:1809
 walk_component+0x2e1/0x410 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2636
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 do_mount fs/namespace.c:3897 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:4088
 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: 0033:0x7f93ae260e09
RSP: 002b:00007f93ae1f6218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f93ae2f26b8 RCX: 00007f93ae260e09
RDX: 0000000000000000 RSI: 0000400000000140 RDI: 0000000000000000
RBP: 00007f93ae2f26b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000246 R12: 0000400000000000
R13: 0000400000000100 R14: 0000400000000140 R15: 0030656c69662f2e
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8eb38f60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8eb38f60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8eb38f60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
1 lock held by kswapd0/90:
2 locks held by getty/5589:
 #0: ffff88814d67f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900033332f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x616/0x1770 drivers/tty/n_tty.c:2211
2 locks held by syz-executor448/5840:
1 lock held by syz-executor448/5850:
 #0: ffff888073555680 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:887 [inline]
 #0: ffff888073555680 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1809
2 locks held by syz-executor448/5842:
1 lock held by syz-executor448/5846:
 #0: ffff8880735546c0 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:887 [inline]
 #0: ffff8880735546c0 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1809
2 locks held by syz-executor448/5844:
1 lock held by syz-executor448/5849:
 #0: ffff888073555140 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:887 [inline]
 #0: ffff888073555140 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1809
2 locks held by syz-executor448/5839:
1 lock held by syz-executor448/5848:
 #0: ffff888073554180 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:887 [inline]
 #0: ffff888073554180 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1809
2 locks held by syz-executor448/5841:
1 lock held by syz-executor448/5851:
 #0: ffff888073554c00 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:887 [inline]
 #0: ffff888073554c00 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1809

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 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:236 [inline]
 watchdog+0x1058/0x10a0 kernel/hung_task.c:399
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5842 Comm: syz-executor448 Not tainted 6.14.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:check_preemption_disabled+0x60/0x120 lib/smp_processor_id.c:19
Code: 00 48 3b 44 24 08 0f 85 ce 00 00 00 89 d8 48 83 c4 10 5b 41 5c 41 5e 41 5f c3 cc cc cc cc 48 c7 04 24 00 00 00 00 9c 8f 04 24 <f7> 04 24 00 02 00 00 74 c5 49 89 f6 49 89 ff 65 4c 8b 24 25 00 d5
RSP: 0018:ffffc90003e0edc0 EFLAGS: 00000046
RAX: 0000000080000000 RBX: 0000000000000001 RCX: ffff8880351eda00
RDX: ffff8880351eda00 RSI: ffffffff8c2ab680 RDI: ffffffff8c801a80
RBP: 0000000000000003 R08: ffffffff8bfe2a27 R09: 1ffffffff28a2308
R10: dffffc0000000000 R11: fffffbfff28a2309 R12: 0000000000000246
R13: ffff8880351eda00 R14: 00000000ffffffff R15: ffff888148cd4d98
FS:  00007f93ae2176c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563d027e2600 CR3: 0000000074cee000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lockdep_recursion_finish kernel/locking/lockdep.c:469 [inline]
 lock_is_held_type+0x101/0x190 kernel/locking/lockdep.c:5924
 lock_is_held include/linux/lockdep.h:249 [inline]
 xa_entry include/linux/xarray.h:1220 [inline]
 xas_descend lib/xarray.c:208 [inline]
 xas_load+0x19c/0x5c0 lib/xarray.c:246
 filemap_get_entry+0x1f0/0x3b0 mm/filemap.c:1860
 __filemap_get_folio+0x75/0xae0 mm/filemap.c:1905
 __find_get_block_slow fs/buffer.c:203 [inline]
 __find_get_block+0x287/0x1140 fs/buffer.c:1398
 __getblk_slow fs/buffer.c:1127 [inline]
 bdev_getblk+0x189/0x670 fs/buffer.c:1431
 __bread_gfp+0x86/0x400 fs/buffer.c:1485
 sb_bread include/linux/buffer_head.h:346 [inline]
 get_branch+0x2c3/0x6e0 fs/sysv/itree.c:102
 get_block+0x180/0x16e0 fs/sysv/itree.c:222
 block_read_full_folio+0x3ee/0xae0 fs/buffer.c:2396
 filemap_read_folio+0x148/0x3b0 mm/filemap.c:2390
 do_read_cache_folio+0x373/0x5b0 mm/filemap.c:3960
 read_mapping_folio include/linux/pagemap.h:1023 [inline]
 dir_get_folio fs/sysv/dir.c:64 [inline]
 sysv_find_entry+0x16c/0x590 fs/sysv/dir.c:154
 sysv_inode_by_name+0x98/0x2a0 fs/sysv/dir.c:370
 sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
 lookup_open fs/namei.c:3629 [inline]
 open_last_lookups fs/namei.c:3750 [inline]
 path_openat+0x11b4/0x3590 fs/namei.c:3986
 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: 0033:0x7f93ae260e09
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:00007f93ae217218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f93ae2f26a8 RCX: 00007f93ae260e09
RDX: 0000000000141842 RSI: 0000400000000100 RDI: 00000000ffffff9c
RBP: 00007f93ae2f26a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000017a R11: 0000000000000246 R12: 0000400000000000
R13: 0000400000000100 R14: 0000400000000140 R15: 0030656c69662f2e
 </TASK>

Crashes (1830):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/25 08:42 upstream d082ecbc71e9 d34966d1 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs INFO: task hung in lookup_slow
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
2025/05/12 06:50 upstream cd802e7e5f1e 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/12 01:05 upstream cd802e7e5f1e 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/11 19:44 upstream 3ce9925823c7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/11 02:35 upstream bec6f00f120e 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/10 19:55 upstream bec6f00f120e 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/09 23:12 upstream 9c69f8884904 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/09 01:41 upstream 2c89c1b655c0 bb813bcc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/08 18:05 upstream d76bb1ebb558 dbf35fa1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/07 21:55 upstream 707df3375124 dbf35fa1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/07 03:38 upstream 0d8d44db295c 350f4ffc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/06 05:34 upstream 01f95500a162 ae98e6b9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/05 22:47 upstream 92a09c47464d 6ca47dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/05 21:30 upstream 92a09c47464d 6ca47dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/05 18:47 upstream 92a09c47464d 6ca47dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/05 17:07 upstream 92a09c47464d 6ca47dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/05 06:29 upstream 14c55b7bb0a8 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/04 12:23 upstream e8ab83e34bdc b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/04 04:45 upstream 2a239ffbebb5 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/03 16:37 upstream 95d3481af6dc b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/03 09:08 upstream 95d3481af6dc b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/02 22:28 upstream 2bfcee565c3a b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/05/01 07:33 upstream 7a13c14ee59d ce7952f4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/30 16:40 upstream b6ea1680d0ac 85a5a23f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/30 12:22 upstream b6ea1680d0ac 85a5a23f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/29 10:16 upstream ca91b9500108 aeb6ec69 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/28 12:07 upstream b4432656b36e c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/28 03:52 upstream b4432656b36e c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/27 17:48 upstream 5bc1018675ec c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/27 05:32 upstream 5bc1018675ec c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/26 18:46 upstream f1a3944c860b c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/26 10:44 upstream f1a3944c860b c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/26 05:24 upstream 02ddfb981de8 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/25 12:55 upstream 02ddfb981de8 e3715315 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/24 09:17 upstream a79be02bba5c 9882047a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/24 05:21 upstream a79be02bba5c 73a168d0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/23 23:45 upstream a79be02bba5c 73a168d0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/23 15:46 upstream bc3372351d0c 53a8b9bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/23 11:13 upstream bc3372351d0c 53a8b9bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/23 05:54 upstream bc3372351d0c 53a8b9bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/23 03:05 upstream bc3372351d0c 53a8b9bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/22 18:29 upstream a33b5a08cbbd 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/22 16:31 upstream a33b5a08cbbd 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/22 13:33 upstream a33b5a08cbbd 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/22 07:07 upstream a33b5a08cbbd 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/21 13:42 upstream 9d7a0577c9db 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/21 11:57 upstream 9d7a0577c9db 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/21 10:48 upstream 9d7a0577c9db 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/21 04:29 upstream 6fea5fabd332 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/19 06:40 upstream 3088d26962e8 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/18 18:02 upstream fc96b232f8e7 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/04/18 16:38 upstream fc96b232f8e7 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in lookup_slow
2025/03/08 12:38 upstream 21e4543a2e2f 7e3bd60d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root 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
2025/01/06 03:23 linux-next 8155b4ef3466 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in lookup_slow
2025/02/20 05:15 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e6747d19291c cbd8edab .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.