INFO: task syz-executor.1:7309 blocked for more than 143 seconds.
Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:29024 pid:7309 tgid:7298 ppid:6100 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:805 [inline]
lookup_slow fs/namei.c:1708 [inline]
walk_component+0x342/0x5b0 fs/namei.c:2004
lookup_last fs/namei.c:2461 [inline]
path_lookupat+0x17f/0x770 fs/namei.c:2485
filename_lookup+0x1e5/0x5b0 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 fs/namespace.c:3875 [inline]
__x64_sys_mount+0x1ff/0x320 fs/namespace.c:3875
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9df647dca9
RSP: 002b:00007f9df71c70c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9df65ac050 RCX: 00007f9df647dca9
RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000000000000
RBP: 00007f9df64c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9df65ac050 R15: 00007ffd58d13458
INFO: task syz-executor.1:7311 blocked for more than 144 seconds.
Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:29600 pid:7311 tgid:7298 ppid:6100 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:805 [inline]
lookup_slow fs/namei.c:1708 [inline]
walk_component+0x342/0x5b0 fs/namei.c:2004
lookup_last fs/namei.c:2461 [inline]
path_lookupat+0x17f/0x770 fs/namei.c:2485
filename_lookup+0x1e5/0x5b0 fs/namei.c:2514
user_path_at_empty+0x42/0x60 fs/namei.c:2921
user_path_at include/linux/namei.h:57 [inline]
__do_sys_chdir fs/open.c:558 [inline]
__se_sys_chdir fs/open.c:552 [inline]
__x64_sys_chdir+0xc2/0x270 fs/open.c:552
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9df647dca9
RSP: 002b:00007f9df71a60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 00007f9df65ac120 RCX: 00007f9df647dca9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000240
RBP: 00007f9df64c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9df65ac120 R15: 00007ffd58d13458
INFO: task syz-executor.1:7315 blocked for more than 145 seconds.
Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:29824 pid:7315 tgid:7298 ppid:6100 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline]
__down_write_common+0x950/0x13f0 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:830 [inline]
filename_create+0x1c2/0x530 fs/namei.c:3892
do_mkdirat+0xab/0x3a0 fs/namei.c:4138
__do_sys_mkdir fs/namei.c:4166 [inline]
__se_sys_mkdir fs/namei.c:4164 [inline]
__x64_sys_mkdir+0xf1/0x140 fs/namei.c:4164
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9df647dca9
RSP: 002b:00007f9df71850c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f9df65ac1f0 RCX: 00007f9df647dca9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007f9df64c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9df65ac1f0 R15: 00007ffd58d13458
INFO: task syz-executor.1:7316 blocked for more than 145 seconds.
Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:29024 pid:7316 tgid:7298 ppid:6100 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:805 [inline]
lookup_slow fs/namei.c:1708 [inline]
walk_component+0x342/0x5b0 fs/namei.c:2004
link_path_walk.part.0.constprop.0+0x77f/0xcd0 fs/namei.c:2331
link_path_walk fs/namei.c:2256 [inline]
path_openat+0x22f/0x2990 fs/namei.c:3795
do_filp_open+0x1dc/0x430 fs/namei.c:3826
do_sys_openat2+0x17a/0x1e0 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+0x154/0x1e0 fs/open.c:1425
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9df647dca9
RSP: 002b:00007f9df71640c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f9df65ac2c0 RCX: 00007f9df647dca9
RDX: 0000000000000000 RSI: 0000000000080040 RDI: 00000000200002c0
RBP: 00007f9df64c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9df65ac2c0 R15: 00007ffd58d13458
INFO: task syz-executor.1:7317 blocked for more than 145 seconds.
Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:29328 pid:7317 tgid:7298 ppid:6100 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:805 [inline]
open_last_lookups fs/namei.c:3565 [inline]
path_openat+0x18ce/0x2990 fs/namei.c:3796
do_filp_open+0x1dc/0x430 fs/namei.c:3826
do_sys_openat2+0x17a/0x1e0 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+0x154/0x1e0 fs/open.c:1425
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9df647dca9
RSP: 002b:00007f9df71430c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f9df65ac390 RCX: 00007f9df647dca9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020022ff6
RBP: 00007f9df64c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9df65ac390 R15: 00007ffd58d13458
INFO: task syz-executor.1:7318 blocked for more than 146 seconds.
Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:29024 pid:7318 tgid:7298 ppid:6100 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:805 [inline]
lookup_slow fs/namei.c:1708 [inline]
walk_component+0x342/0x5b0 fs/namei.c:2004
link_path_walk.part.0.constprop.0+0x77f/0xcd0 fs/namei.c:2331
link_path_walk fs/namei.c:2256 [inline]
path_parentat+0xaa/0x1b0 fs/namei.c:2532
__filename_parentat+0x1f0/0x630 fs/namei.c:2556
filename_parentat fs/namei.c:2574 [inline]
do_unlinkat+0x106/0x750 fs/namei.c:4374
__do_sys_unlink fs/namei.c:4447 [inline]
__se_sys_unlink fs/namei.c:4445 [inline]
__x64_sys_unlink+0xc7/0x110 fs/namei.c:4445
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9df647dca9
RSP: 002b:00007f9df71220c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007f9df65ac460 RCX: 00007f9df647dca9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0
RBP: 00007f9df64c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9df65ac460 R15: 00007ffd58d13458
INFO: task syz-executor.1:7319 blocked for more than 147 seconds.
Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26656 pid:7319 tgid:7298 ppid:6100 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline]
__down_write_common+0x950/0x13f0 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:830 [inline]
do_rmdir+0x235/0x410 fs/namei.c:4253
__do_sys_rmdir fs/namei.c:4284 [inline]
__se_sys_rmdir fs/namei.c:4282 [inline]
__x64_sys_rmdir+0xc7/0x110 fs/namei.c:4282
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9df647dca9
RSP: 002b:00007f9df71010c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007f9df65ac530 RCX: 00007f9df647dca9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007f9df64c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9df65ac530 R15: 00007ffd58d13458
INFO: task syz-executor.1:7324 blocked for more than 147 seconds.
Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:29504 pid:7324 tgid:7298 ppid:6100 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline]
__down_write_common+0x950/0x13f0 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:830 [inline]
filename_create+0x1c2/0x530 fs/namei.c:3892
do_mkdirat+0xab/0x3a0 fs/namei.c:4138
__do_sys_mkdirat fs/namei.c:4161 [inline]
__se_sys_mkdirat fs/namei.c:4159 [inline]
__x64_sys_mkdirat+0x114/0x170 fs/namei.c:4159
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9df647c7a7
RSP: 002b:00007f9df5ffeef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f9df5ffef80 RCX: 00007f9df647c7a7
RDX: 00000000000001ff RSI: 0000000020000180 RDI: 00000000ffffff9c
RBP: 0000000020000100 R08: 00000000200000c0 R09: 0000000000000000
R10: 0000000020000100 R11: 0000000000000246 R12: 0000000020000180
R13: 00007f9df5ffef40 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#0: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x403/0x7a0 kernel/rcu/tree_exp.h:939
3 locks held by kworker/1:0/24:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3242
#1: ffffc900001e7d80 (fqdir_free_work){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3243
#2: ffffffff8d7bc400 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x6c0 kernel/rcu/tree.c:4073
1 lock held by khungtaskd/30:
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
3 locks held by kworker/1:1/44:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3242
#1: ffffc90000b47d80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3243
#2: ffffffff8f301748 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:276
3 locks held by kworker/1:2/2525:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3242
#1: ffffc9000a65fd80 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3243
#2: ffff88806b33b240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1bb/0x26e0 drivers/net/netdevsim/fib.c:1489
2 locks held by kworker/u8:9/2833:
4 locks held by kworker/u8:11/2886:
#0: ffff888015ecb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3242
#1: ffffc9000ab4fd80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3243
#2: ffffffff8f2ec950 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xbf0 net/core/net_namespace.c:591
#3: ffffffff8f301748 (rtnl_mutex){+.+.}-{3:3}, at: tc_action_net_exit include/net/act_api.h:173 [inline]
#3: ffffffff8f301748 (rtnl_mutex){+.+.}-{3:3}, at: gate_exit_net+0x24/0x130 net/sched/act_gate.c:659
2 locks held by getty/4832:
#0: ffff88802ad0e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2201
3 locks held by kworker/0:7/5158:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3242
#1: ffffc900043dfd80 ((work_completion)(&pool->work)){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3243
#2: ffffffff8f301748 (rtnl_mutex){+.+.}-{3:3}, at: xp_release_deferred+0x1b/0x220 net/xdp/xsk_buff_pool.c:275
2 locks held by syz-executor.1/7299:
1 lock held by syz-executor.1/7309:
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: lookup_slow fs/namei.c:1708 [inline]
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: walk_component+0x342/0x5b0 fs/namei.c:2004
1 lock held by syz-executor.1/7311:
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: lookup_slow fs/namei.c:1708 [inline]
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: walk_component+0x342/0x5b0 fs/namei.c:2004
2 locks held by syz-executor.1/7315:
#0: ffff88801205e420 (sb_writers#31){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:3885
#1: ffff88823bd44188 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline]
#1: ffff88823bd44188 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:3892
1 lock held by syz-executor.1/7316:
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: lookup_slow fs/namei.c:1708 [inline]
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: walk_component+0x342/0x5b0 fs/namei.c:2004
1 lock held by syz-executor.1/7317:
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3565 [inline]
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: path_openat+0x18ce/0x2990 fs/namei.c:3796
1 lock held by syz-executor.1/7318:
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: lookup_slow fs/namei.c:1708 [inline]
#0: ffff88823bd44188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: walk_component+0x342/0x5b0 fs/namei.c:2004
2 locks held by syz-executor.1/7319:
#0: ffff88801205e420 (sb_writers#31){.+.+}-{0:0}, at: do_rmdir+0x1e4/0x410 fs/namei.c:4249
#1: ffff88823bd44188 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline]
#1: ffff88823bd44188 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: do_rmdir+0x235/0x410 fs/namei.c:4253
2 locks held by syz-executor.1/7324:
#0: ffff88801205e420 (sb_writers#31){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:3885
#1: ffff88823bd44188 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline]
#1: ffff88823bd44188 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:3892
2 locks held by syz-executor.0/7593:
#0: ffffffff8f301748 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8f301748 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x250 drivers/net/tun.c:3500
#1: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#1: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x403/0x7a0 kernel/rcu/tree_exp.h:939
7 locks held by syz-executor.2/8459:
#0: ffff88802a5c6420 (sb_writers#9){.+.+}-{0:0}, at: ksys_write+0x12f/0x260 fs/read_write.c:643
#1: ffff8880224d4488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x281/0x500 fs/kernfs/file.c:325
#2: ffff88801edf40f8 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a4/0x500 fs/kernfs/file.c:326
#3: ffffffff8e9714e8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:216
#4: ffff88807cb840e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#4: ffff88807cb840e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1093 [inline]
#4: ffff88807cb840e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1290
#5: ffff88807cb85250 (&devlink->lock_key#8){+.+.}-{3:3}, at: nsim_drv_remove+0x4a/0x1d0 drivers/net/netdevsim/dev.c:1672
#6: ffffffff8f301748 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x35/0x2f0 drivers/net/netdevsim/netdev.c:451
1 lock held by syz-executor.0/8593:
#0: ffffffff8f301748 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f301748 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe60 net/core/rtnetlink.c:6592
2 locks held by syz-executor.4/8610:
#0: ffffffff8f39dfd0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
#1: ffffffff8f301748 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0xb4/0xb10 net/wireless/nl80211.c:16403
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #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+0x116/0x1f0 lib/dump_stack.c:114
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf86/0x1240 kernel/hung_task.c:380
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2886 Comm: kworker/u8:11 Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: netns cleanup_net
RIP: 0010:kasan_check_range+0x158/0x1a0 mm/kasan/generic.c:190
Code: 74 11 80 38 00 74 ef 4d 8d 1c 2c 48 85 c0 48 89 c2 75 93 48 89 da 4c 89 d8 4c 29 da e9 2c ff ff ff 5b b8 01 00 00 00 5d 41 5c cc cc cc cc b8 01 00 00 00 c3 cc cc cc cc 48 29 c3 48 89 da 49
RSP: 0018:ffffc9000ab4f7e8 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000021 RCX: ffffffff816afb1e
RDX: fffffbfff27bb631 RSI: 0000000000000008 RDI: ffffffff93ddb180
RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff27bb630
R10: ffffffff93ddb187 R11: 0000000000000003 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88802b880b50 R15: 0000000000000021
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f66af778198 CR3: 0000000059ae2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class+0x4e/0x130 kernel/locking/lockdep.c:228
check_wait_context kernel/locking/lockdep.c:4773 [inline]
__lock_acquire+0x3f2/0x3b30 kernel/locking/lockdep.c:5087
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
inet_twsk_purge+0x126/0x8f0 net/ipv4/inet_timewait_sock.c:277
tcp_twsk_purge+0x125/0x170 net/ipv4/tcp_minisocks.c:401
tcp_sk_exit_batch+0x21/0x180 net/ipv4/tcp_ipv4.c:3504
ops_exit_list+0x128/0x180 net/core/net_namespace.c:175
cleanup_net+0x5b7/0xbf0 net/core/net_namespace.c:637
process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3267
process_scheduled_works kernel/workqueue.c:3348 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3429
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244