INFO: task syz-executor:5773 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21552 pid:5773 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1553/0x45a0 kernel/sched/core.c:6700
schedule+0xbd/0x170 kernel/sched/core.c:6774
io_schedule+0x80/0xd0 kernel/sched/core.c:9023
folio_wait_bit_common+0x714/0xfa0 mm/filemap.c:1329
__filemap_get_folio+0xbc/0xbb0 mm/filemap.c:1910
truncate_inode_pages_range+0x46b/0xfb0 mm/truncate.c:401
evict+0x4dd/0x8d0 fs/inode.c:707
dispose_list fs/inode.c:738 [inline]
evict_inodes+0x606/0x6a0 fs/inode.c:792
generic_shutdown_super+0x97/0x2b0 fs/super.c:672
kill_block_super+0x44/0x90 fs/super.c:1660
deactivate_locked_super+0x97/0x100 fs/super.c:481
cleanup_mnt+0x43b/0x4d0 fs/namespace.c:1259
task_work_run+0x1d4/0x260 kernel/task_work.c:245
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7efc11b9d1d7
RSP: 002b:00007ffd43539618 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007efc11c31c3b RCX: 00007efc11b9d1d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd435396d0
RBP: 00007ffd435396d0 R08: 00007ffd4353a6d0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd4353a760
R13: 00007efc11c31c3b R14: 00000000000ea9e4 R15: 00007ffd4353a7a0
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d131fa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#0: ffffffff8d131fa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#0: ffffffff8d131fa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
3 locks held by udevd/5138:
2 locks held by getty/5535:
#0: ffff88802d51e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x433/0x1390 drivers/tty/n_tty.c:2217
1 lock held by syz-executor/5769:
#0: ffffffff8d137978 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#0: ffffffff8d137978 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x306/0x880 kernel/rcu/tree_exp.h:1004
1 lock held by syz-executor/5773:
#0: ffff88807aa160e0 (&type->s_umount_key#86){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807aa160e0 (&type->s_umount_key#86){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807aa160e0 (&type->s_umount_key#86){++++}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/5776:
#0: ffff88807dd100e0 (&type->s_umount_key#86){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807dd100e0 (&type->s_umount_key#86){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807dd100e0 (&type->s_umount_key#86){++++}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
2 locks held by kworker/1:4/5819:
1 lock held by syz.5.7532/23456:
#0: ffff88807aa160e0 (&type->s_umount_key#86){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807aa160e0 (&type->s_umount_key#86){++++}-{3:3}, at: super_lock+0x17f/0x3a0 fs/super.c:117
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
Call Trace:
dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
nmi_cpu_backtrace+0x3a6/0x3e0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x2f0 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+0xf3d/0xf80 kernel/hung_task.c:379
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 991 Comm: kworker/u4:6 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:cfg80211_parse_ml_sta_data+0x1a5e/0x1ab0 net/wireless/scan.c:2829
Code: df eb 05 e8 c4 35 ad f7 48 c7 84 24 00 01 00 00 0e 36 e0 45 48 8b 44 24 58 4a c7 04 38 00 00 00 00 4a c7 44 38 08 00 00 00 00 <4a> c7 44 38 10 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24
RSP: 0018:ffffc900043e71e0 EFLAGS: 00000293
RAX: 1ffff9200087ce5c RBX: 0000000000000001 RCX: ffff888022521e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc900043e73f0 R08: 0000000000000004 R09: 0000000000000004
R10: ffffc900043e734c R11: fffff5200087ce6c R12: ffffc900043e75f0
R13: ffffc900043e75f8 R14: 0000000000000820 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0b94143000 CR3: 000000000cf32000 CR4: 00000000003506f0
Call Trace:
cfg80211_inform_bss_frame_data+0xe2c/0x13d0 net/wireless/scan.c:3032
ieee80211_bss_info_update+0x759/0x9b0 net/mac80211/scan.c:211
ieee80211_rx_bss_info net/mac80211/ibss.c:1124 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1613 [inline]
ieee80211_ibss_rx_queued_mgmt+0x18ae/0x2c80 net/mac80211/ibss.c:1642
ieee80211_iface_process_skb net/mac80211/iface.c:1655 [inline]
ieee80211_iface_work+0x717/0xc70 net/mac80211/iface.c:1709
cfg80211_wiphy_work+0x225/0x260 net/wireless/core.c:437
process_one_work kernel/workqueue.c:2634 [inline]
process_scheduled_works+0xa5d/0x15d0 kernel/workqueue.c:2711
worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
vkms_vblank_simulate: vblank timer overrun
vkms_vblank_simulate: vblank timer overrun