INFO: task syz-executor.4:5873 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26704 pid:5873 tgid:5870 ppid:5090 flags:0x00020006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1781/0x49d0 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:828 [inline]
lock_rename fs/namei.c:3066 [inline]
do_renameat2+0x62c/0x13f0 fs/namei.c:4975
__do_sys_rename fs/namei.c:5087 [inline]
__se_sys_rename fs/namei.c:5085 [inline]
__x64_sys_rename+0x86/0xa0 fs/namei.c:5085
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fc2b587de69
RSP: 002b:00007fc2b53de0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fc2b59ac050 RCX: 00007fc2b587de69
RDX: 0000000000000000 RSI: 00000000200003c0 RDI: 0000000020000140
RBP: 00007fc2b58ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc2b59ac050 R15: 00007ffe1ea6df08
INFO: task syz-executor.4:5881 blocked for more than 144 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27024 pid:5881 tgid:5870 ppid:5090 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1781/0x49d0 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:793 [inline]
open_last_lookups fs/namei.c:3563 [inline]
path_openat+0x7d3/0x3240 fs/namei.c:3796
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_open fs/open.c:1429 [inline]
__se_sys_open fs/open.c:1425 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1425
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fc2b587de69
RSP: 002b:00007fc2b53bd0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fc2b59ac120 RCX: 00007fc2b587de69
RDX: 0000000000000000 RSI: 000000000014d27e RDI: 0000000020000180
RBP: 00007fc2b58ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc2b59ac120 R15: 00007ffe1ea6df08
INFO: task syz-executor.4:5884 blocked for more than 145 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27864 pid:5884 tgid:5870 ppid:5090 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1781/0x49d0 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
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:803 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1708
walk_component+0x2e1/0x410 fs/namei.c:2004
lookup_last fs/namei.c:2461 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2485
filename_lookup+0x256/0x610 fs/namei.c:2514
vfs_statx+0x105/0x4e0 fs/stat.c:244
vfs_fstatat fs/stat.c:304 [inline]
vfs_stat include/linux/fs.h:3260 [inline]
__do_sys_newstat fs/stat.c:441 [inline]
__se_sys_newstat fs/stat.c:437 [inline]
__x64_sys_newstat+0xf8/0x180 fs/stat.c:437
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fc2b587de69
RSP: 002b:00007fc2b539c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 00007fc2b59ac1f0 RCX: 00007fc2b587de69
RDX: 0000000000000000 RSI: 0000000020000580 RDI: 0000000020000440
RBP: 00007fc2b58ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc2b59ac1f0 R15: 00007ffe1ea6df08
INFO: task syz-executor.4:5886 blocked for more than 146 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28880 pid:5886 tgid:5870 ppid:5090 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1781/0x49d0 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:828 [inline]
filename_create+0x260/0x540 fs/namei.c:3892
do_mkdirat+0xbd/0x3a0 fs/namei.c:4141
__do_sys_mkdir fs/namei.c:4169 [inline]
__se_sys_mkdir fs/namei.c:4167 [inline]
__x64_sys_mkdir+0x6e/0x80 fs/namei.c:4167
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fc2b587de69
RSP: 002b:00007fc2b537b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fc2b59ac2c0 RCX: 00007fc2b587de69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007fc2b58ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc2b59ac2c0 R15: 00007ffe1ea6df08
INFO: task syz-executor.4:5890 blocked for more than 146 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28752 pid:5890 tgid:5870 ppid:5090 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1781/0x49d0 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
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:803 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1708
walk_component+0x2e1/0x410 fs/namei.c:2004
lookup_last fs/namei.c:2461 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2485
filename_lookup+0x256/0x610 fs/namei.c:2514
user_path_at_empty+0x42/0x60 fs/namei.c:2921
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3689 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fc2b587de69
RSP: 002b:00007fc2b535a0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc2b59ac390 RCX: 00007fc2b587de69
RDX: 0000000020000040 RSI: 0000000020000380 RDI: 0000000000000000
RBP: 00007fc2b58ca47a R08: 0000000020000400 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc2b59ac390 R15: 00007ffe1ea6df08
INFO: task syz-executor.4:5896 blocked for more than 146 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26544 pid:5896 tgid:5870 ppid:5090 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1781/0x49d0 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
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:803 [inline]
open_last_lookups fs/namei.c:3565 [inline]
path_openat+0x7c4/0x3240 fs/namei.c:3796
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_open fs/open.c:1429 [inline]
__se_sys_open fs/open.c:1425 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1425
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fc2b587de69
RSP: 002b:00007fc2b53390c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fc2b59ac460 RCX: 00007fc2b587de69
RDX: 0000000000000000 RSI: 00000000001cbd00 RDI: 0000000020000540
RBP: 00007fc2b58ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc2b59ac460 R15: 00007ffe1ea6df08
INFO: task syz-executor.4:5897 blocked for more than 147 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28240 pid:5897 tgid:5870 ppid:5090 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1781/0x49d0 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
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:803 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1708
walk_component+0x2e1/0x410 fs/namei.c:2004
lookup_last fs/namei.c:2461 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2485
filename_lookup+0x256/0x610 fs/namei.c:2514
user_path_at_empty+0x42/0x60 fs/namei.c:2921
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3689 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fc2b587de69
RSP: 002b:00007fc2b53180c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc2b59ac530 RCX: 00007fc2b587de69
RDX: 0000000020000040 RSI: 0000000020004a00 RDI: 0000000020000080
RBP: 00007fc2b58ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc2b59ac530 R15: 00007ffe1ea6df08
INFO: task syz-executor.4:5899 blocked for more than 147 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27608 pid:5899 tgid:5870 ppid:5090 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1781/0x49d0 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:828 [inline]
filename_create+0x260/0x540 fs/namei.c:3892
do_mkdirat+0xbd/0x3a0 fs/namei.c:4141
__do_sys_mkdirat fs/namei.c:4164 [inline]
__se_sys_mkdirat fs/namei.c:4162 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4162
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fc2b587c967
RSP: 002b:00007fc2b52f6ef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fc2b52f6f80 RCX: 00007fc2b587c967
RDX: 00000000000001ff RSI: 00000000200000c0 RDI: 00000000ffffff9c
RBP: 0000000020000000 R08: 0000000020000240 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 00000000200000c0
R13: 00007fc2b52f6f40 R14: 0000000000000000 R15: 0000000020000100
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#0: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x463/0x820 kernel/rcu/tree_exp.h:939
1 lock held by khungtaskd/29:
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:3/50:
#0: ffff88802a038148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff88802a038148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335
#1: ffffc90000ba7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc90000ba7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335
#2: ffffffff8f37b588 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4191
2 locks held by kworker/u8:5/132:
#0: ffff888014c81148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff888014c81148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335
#1: ffffc900024efd00 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc900024efd00 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335
2 locks held by getty/4823:
#0: ffff88802a6ad0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by kworker/1:4/5131:
#0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335
#1: ffffc9000416fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc9000416fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335
#2: ffffffff8f37b588 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
2 locks held by syz-executor.4/5871:
2 locks held by syz-executor.4/5873:
#0: ffff88801c7e8420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880785a8188 (&type->i_mutex_dir_key#17/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:828 [inline]
#1: ffff8880785a8188 (&type->i_mutex_dir_key#17/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3066 [inline]
#1: ffff8880785a8188 (&type->i_mutex_dir_key#17/1){+.+.}-{3:3}, at: do_renameat2+0x62c/0x13f0 fs/namei.c:4975
2 locks held by syz-executor.4/5881:
#0: ffff88801c7e8420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880785a8188 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: inode_lock include/linux/fs.h:793 [inline]
#1: ffff8880785a8188 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline]
#1: ffff8880785a8188 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: path_openat+0x7d3/0x3240 fs/namei.c:3796
1 lock held by syz-executor.4/5884:
#0: ffff8880785a8188 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:803 [inline]
#0: ffff8880785a8188 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1708
2 locks held by syz-executor.4/5886:
#0: ffff88801c7e8420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880785a8188 (&type->i_mutex_dir_key#17/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:828 [inline]
#1: ffff8880785a8188 (&type->i_mutex_dir_key#17/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3892
1 lock held by syz-executor.4/5890:
#0: ffff8880785a8188 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:803 [inline]
#0: ffff8880785a8188 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1708
1 lock held by syz-executor.4/5896:
#0: ffff8880785a8188 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:803 [inline]
#0: ffff8880785a8188 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: open_last_lookups fs/namei.c:3565 [inline]
#0: ffff8880785a8188 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: path_openat+0x7c4/0x3240 fs/namei.c:3796
1 lock held by syz-executor.4/5897:
#0: ffff8880785a8188 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:803 [inline]
#0: ffff8880785a8188 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1708
2 locks held by syz-executor.4/5899:
#0: ffff88801c7e8420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880785a8188 (&type->i_mutex_dir_key#17/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:828 [inline]
#1: ffff8880785a8188 (&type->i_mutex_dir_key#17/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3892
1 lock held by syz-executor.2/6791:
#0: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#0: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x463/0x820 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor.1/7589:
#0: ffffffff8f37b588 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8f37b588 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3498
3 locks held by syz-executor.4/7780:
#0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
#1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
#1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207
#2: ffffffff8f37b588 (rtnl_mutex){+.+.}-{3:3}, at: ieee80211_register_hw+0x2bd3/0x3d80 net/mac80211/main.c:1501
1 lock held by udevd/8000:
#0: ffff88801d09d9c0 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline]
#0: ffff88801d09d9c0 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: page_cache_ra_unbounded+0xf2/0x7c0 mm/readahead.c:225
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfb0/0xff0 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5871 Comm: syz-executor.4 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:236 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x35/0x90 kernel/kcov.c:304
Code: 14 25 40 d0 03 00 65 8b 05 a0 d7 6e 7e a9 00 01 ff 00 74 10 a9 00 01 00 00 74 5b 83 ba 14 16 00 00 00 74 52 8b 82 f0 15 00 00 <83> f8 03 75 47 48 8b 8a f8 15 00 00 44 8b 8a f4 15 00 00 49 c1 e1
RSP: 0018:ffffc9000321f310 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffc9000321f388 RCX: ffffffff90d8b000
RDX: ffff888015bfda00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff81408e18 R09: ffffffff8140a8df
R10: 0000000000000003 R11: ffff888015bfda00 R12: ffff888015bfda00
R13: ffffffff8180dfa0 R14: dffffc0000000000 R15: 1ffff92000643e71
FS: 00007fc2b53ff6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2adb5ad988 CR3: 0000000072234000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_get_return_address+0x68/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x125/0x1b0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3798 [inline]
slab_alloc_node mm/slub.c:3845 [inline]
kmem_cache_alloc+0x174/0x340 mm/slub.c:3852
kmem_cache_zalloc include/linux/slab.h:739 [inline]
alloc_buffer_head+0x2d/0x2a0 fs/buffer.c:3001
folio_alloc_buffers+0x2da/0x840 fs/buffer.c:924
create_empty_buffers+0x3a/0x740 fs/buffer.c:1650
block_read_full_folio+0x258/0xe10 fs/buffer.c:2365
filemap_read_folio+0x1a0/0x790 mm/filemap.c:2333
do_read_cache_folio+0x134/0x820 mm/filemap.c:3703
do_read_cache_page+0x30/0x200 mm/filemap.c:3769
read_mapping_page include/linux/pagemap.h:888 [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_one_qstr_excl+0x11f/0x260 fs/namei.c:1607
filename_create+0x297/0x540 fs/namei.c:3893
do_mkdirat+0xbd/0x3a0 fs/namei.c:4141
__do_sys_mkdirat fs/namei.c:4164 [inline]
__se_sys_mkdirat fs/namei.c:4162 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4162
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fc2b587c967
Code: 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 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:00007fc2b53feef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fc2b53fef80 RCX: 00007fc2b587c967
RDX: 00000000000001ff RSI: 0000000020000100 RDI: 00000000ffffff9c
RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 0000000020000100
R13: 00007fc2b53fef40 R14: 0000000000000000 R15: 0000000020000200