INFO: task syz-executor.2:19977 blocked for more than 143 seconds.
Not tainted 6.2.0-rc6-syzkaller-00011-gc0b67534c95c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:27496 pid:19977 ppid:5106 flags:0x00104000
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6606
schedule+0xde/0x1b0 kernel/sched/core.c:6682
schedule_timeout+0x1e1/0x2a0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106
io_wq_exit_workers io_uring/io-wq.c:1259 [inline]
io_wq_put_and_exit+0x273/0xe80 io_uring/io-wq.c:1294
io_uring_clean_tctx+0x117/0x178 io_uring/tctx.c:193
io_uring_cancel_generic+0x5ae/0x606 io_uring/io_uring.c:3143
io_uring_files_cancel include/linux/io_uring.h:55 [inline]
do_exit+0x522/0x2950 kernel/exit.c:822
do_group_exit+0xd4/0x2a0 kernel/exit.c:1012
get_signal+0x21c3/0x2450 kernel/signal.c:2859
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296
do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f13ba88c0c9
RSP: 002b:00007f13b93fe218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f13ba9abf88 RCX: 00007f13ba88c0c9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f13ba9abf88
RBP: 00007f13ba9abf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13ba9abf8c
R13: 00007fff5b54ec6f R14: 00007f13b93fe300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c790fb0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c790cb0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8c791b00 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
2 locks held by getty/4740:
#0: ffff88802bcbb098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
2 locks held by kworker/1:15/6731:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc900031dfda8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
3 locks held by kworker/u4:16/9086:
#0: ffff8880b993b598 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:537
#1: ffff8880b99287c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2de/0x930 kernel/sched/psi.c:976
#2: ffff88802144cd40 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1114 [inline]
#2: ffff88802144cd40 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x94/0xe80 net/mac80211/ibss.c:1680
5 locks held by kworker/u4:25/11551:
#0: ffff8880125df938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880125df938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880125df938 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8880125df938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff8880125df938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff8880125df938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc900154c7da8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffffffff8e0a9b50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9f/0xb10 net/core/net_namespace.c:568
#3: ffff8880a4f753e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_destruct+0x14f/0x400 drivers/net/wireguard/device.c:249
#4: ffffffff8c79c7b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#4: ffffffff8c79c7b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x5df/0x780 kernel/rcu/tree_exp.h:946
1 lock held by iou-wrk-19977/19983:
#0: ffff88803b3220a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_ring_submit_lock io_uring/io_uring.h:215 [inline]
#0: ffff88803b3220a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_provide_buffers+0xad7/0xff0 io_uring/kbuf.c:428
1 lock held by iou-wrk-19977/19991:
#0: ffff88803b3220a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_ring_submit_lock io_uring/io_uring.h:215 [inline]
#0: ffff88803b3220a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_provide_buffers+0xad7/0xff0 io_uring/kbuf.c:428
1 lock held by iou-wrk-19977/19992:
#0: ffff88803b3220a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_ring_submit_lock io_uring/io_uring.h:215 [inline]
#0: ffff88803b3220a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_provide_buffers+0xad7/0xff0 io_uring/kbuf.c:428
1 lock held by iou-wrk-19977/19993:
#0: ffff88803b3220a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_ring_submit_lock io_uring/io_uring.h:215 [inline]
#0: ffff88803b3220a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_provide_buffers+0xad7/0xff0 io_uring/kbuf.c:428
1 lock held by iou-wrk-19977/19994:
1 lock held by iou-wrk-19977/19995:
1 lock held by iou-wrk-19977/19996:
#0: ffff88803b3220a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_ring_submit_lock io_uring/io_uring.h:215 [inline]
#0: ffff88803b3220a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_provide_buffers+0xad7/0xff0 io_uring/kbuf.c:428
2 locks held by syz-executor.2/21751:
#0: ffffffff8e0bd7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e0bd7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
#1: ffffffff8c79c7b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#1: ffffffff8c79c7b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x24f/0x780 kernel/rcu/tree_exp.h:946
1 lock held by dhcpcd-run-hook/21779:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc6-syzkaller-00011-gc0b67534c95c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x333/0x3c0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xc75/0xfc0 kernel/hung_task.c:377
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4411 Comm: syslogd Not tainted 6.2.0-rc6-syzkaller-00011-gc0b67534c95c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:__follow_mount_rcu fs/namei.c:1480 [inline]
RIP: 0010:handle_mounts fs/namei.c:1531 [inline]
RIP: 0010:step_into+0x104/0x20c0 fs/namei.c:1831
Code: 45 89 f5 41 83 e5 40 44 89 ee e8 a7 d7 9f ff 45 85 ed 0f 84 5e 06 00 00 e8 e9 da 9f ff 4c 89 e1 48 ba 00 00 00 00 00 fc ff df <48> c1 e9 03 0f b6 14 11 84 d2 74 09 80 fa 03 0f 8e fc 0e 00 00 41
RSP: 0018:ffffc9000314f8c0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffc9000314fc30 RCX: ffff8880194262f0
RDX: dffffc0000000000 RSI: ffffffff81e187f7 RDI: 0000000000000005
RBP: ffffc9000314f9b8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000040 R11: 0000000000094001 R12: ffff8880194262f0
R13: 0000000000000040 R14: 0000000000000051 R15: ffff88813ff1eaa0
FS: 00007f50802bf800(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f05dd97c050 CR3: 0000000028c93000 CR4: 0000000000350ef0
Call Trace:
walk_component+0xf5/0x5a0 fs/namei.c:1999
link_path_walk.part.0+0x730/0xdf0 fs/namei.c:2320
link_path_walk fs/namei.c:2245 [inline]
path_openat+0x25c/0x2a50 fs/namei.c:3710
do_filp_open+0x1ba/0x410 fs/namei.c:3741
do_sys_openat2+0x16d/0x4c0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f508044b697
Code: 25 00 00 41 00 3d 00 00 41 00 74 37 64 8b 04 25 18 00 00 00 85 c0 75 5b 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 85 00 00 00 48 83 c4 68 5d 41 5c c3 0f 1f
RSP: 002b:00007fff5f3bf740 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000056462d0d2910 RCX: 00007f508044b697
RDX: 0000000000000d41 RSI: 00007f50805d999a RDI: 00000000ffffff9c
RBP: 00007f50805d999a R08: 00007f50804db040 R09: 00007f50804db0c0
R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000000d41
R13: 000056462d0d2a50 R14: 0000000000000004 R15: 000056462d0d2a60