INFO: task syz-executor.3:17545 blocked for more than 143 seconds.
Not tainted 6.6.0-syzkaller-14500-g1c41041124bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:29032 pid:17545 tgid:17533 ppid:5084 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1960/0x4a80 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0xee6/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:802 [inline]
chmod_common+0x1bb/0x4c0 fs/open.c:637
do_fchmodat fs/open.c:691 [inline]
__do_sys_chmod fs/open.c:715 [inline]
__se_sys_chmod fs/open.c:713 [inline]
__x64_sys_chmod+0x100/0x1a0 fs/open.c:713
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f24cd87cae9
RSP: 002b:00007f24ce6130c8 EFLAGS: 00000246 ORIG_RAX: 000000000000005a
RAX: ffffffffffffffda RBX: 00007f24cd99c050 RCX: 00007f24cd87cae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007f24cd8c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f24cd99c050 R15: 00007ffff4739b58
</TASK>
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffffffff8d932a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#0: ffffffff8d932a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:996
2 locks held by kworker/u4:0/11:
#0: ffff888012c71938
((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#1: ffffc90000107d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc90000107d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
1 lock held by khungtaskd/29:
#0: ffffffff8d92d0a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92d0a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92d0a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by kworker/u4:3/48:
#0: ffff888012c71938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#0: ffff888012c71938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#1: ffffc90000b8fd20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc90000b8fd20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
2 locks held by getty/4815:
#0: ffff8880269050a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by kworker/1:6/5153:
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#1: ffffc90004887d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc90004887d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
3 locks held by kworker/0:9/5190:
#0: ffff8880b983c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b9828808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffffffff927c5d10 (&obj_hash[i].lock){-.-.}-{2:2}, at: __debug_check_no_obj_freed lib/debugobjects.c:1020 [inline]
#2: ffffffff927c5d10 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_check_no_obj_freed+0xcc/0x420 lib/debugobjects.c:1063
3 locks held by syz-executor.3/17534:
2 locks held by syz-executor.3/17545:
#0: ffff88806fa84418 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:404
#1: ffff888034c51cb0 (&sb->s_type->i_mutex_key#28){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888034c51cb0 (&sb->s_type->i_mutex_key#28){++++}-{3:3}, at: chmod_common+0x1bb/0x4c0 fs/open.c:637
2 locks held by syz-executor.1/17804:
#0: ffff88806fa840e0 (&type->s_umount_key#76){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88806fa840e0 (&type->s_umount_key#76){++++}-{3:3}, at: super_lock+0x176/0x390 fs/super.c:117
#1: ffff88801a2b00e0 (&sbi->s_lock#2){+.+.}-{3:3}, at: exfat_sync_fs+0x6b/0x100 fs/exfat/super.c:56
2 locks held by syz-executor.1/17840:
#0: ffff88806fa840e0 (&type->s_umount_key#76){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88806fa840e0 (&type->s_umount_key#76){++++}-{3:3}, at: super_lock+0x176/0x390 fs/super.c:117
#1: ffff88801a2b00e0 (&sbi->s_lock#2){+.+.}-{3:3}, at: exfat_sync_fs+0x6b/0x100 fs/exfat/super.c:56
2 locks held by syz-executor.1/17845:
#0: ffff88806fa840e0 (&type->s_umount_key#76){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88806fa840e0 (&type->s_umount_key#76){++++}-{3:3}, at: super_lock+0x176/0x390 fs/super.c:117
#1: ffff88801a2b00e0 (&sbi->s_lock#2){+.+.}-{3:3}, at: exfat_sync_fs+0x6b/0x100 fs/exfat/super.c:56
1 lock held by syz-executor.0/18538:
#0: ffffffff8d932a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8d932a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:996
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-syzkaller-14500-g1c41041124bd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 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+0xfa9/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 66 Comm: kworker/u4:4 Not tainted 6.6.0-syzkaller-14500-g1c41041124bd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:check_preemption_disabled+0x2e/0x110
Code: 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 65 8b 1d 0c 20 ed 74 65 8b 05 01 20 ed 74 a9 ff ff ff 7f 74 22 <65> 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 c7 00 00 00 89 d8
RSP: 0018:ffffc900015c7030 EFLAGS: 00000002
RAX: 0000000080000201 RBX: 0000000000000000 RCX: 00000000000167b0
RDX: 0000000000000004 RSI: ffffffff8b6aaf60 RDI: ffffffff8bbd60c0
RBP: ffffc900015c7130 R08: ffffffff8f006a6f R09: 1ffffffff1e00d4d
R10: dffffc0000000000 R11: fffffbfff1e00d4e R12: 0000000000000246
R13: 1ffff920002b8e14 R14: ffffffff8b211050 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffcfded020 CR3: 0000000031010000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<TASK>
lockdep_hardirqs_off+0xa8/0x100 kernel/locking/lockdep.c:4443
trace_hardirqs_off+0x12/0x40 kernel/trace/trace_preemptirq.c:87
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
_raw_spin_lock_irqsave+0xb0/0x120 kernel/locking/spinlock.c:162
debug_object_activate+0x163/0x530 lib/debugobjects.c:717
debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline]
kvfree_call_rcu+0x99/0x790 kernel/rcu/tree.c:3377
cfg80211_update_known_bss+0x166/0x9d0
__cfg80211_bss_update+0x153/0x2030 net/wireless/scan.c:1827
cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2905 [inline]
cfg80211_inform_bss_frame_data+0xde2/0x17a0 net/wireless/scan.c:2936
ieee80211_bss_info_update+0x7ca/0xaa0 net/mac80211/scan.c:205
ieee80211_rx_bss_info net/mac80211/ibss.c:1098 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1577 [inline]
ieee80211_ibss_rx_queued_mgmt+0x191d/0x2d20 net/mac80211/ibss.c:1604
ieee80211_iface_process_skb net/mac80211/iface.c:1589 [inline]
ieee80211_iface_work+0x801/0xd80 net/mac80211/iface.c:1643
cfg80211_wiphy_work+0x21e/0x250 net/wireless/core.c:435
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
</TASK>