INFO: task udevd:7599 blocked for more than 144 seconds.
Not tainted 6.13.0-rc7-syzkaller-00019-gc45323b7560e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:24736 pid:7599 tgid:7599 ppid:5191 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
wait_for_reconnect drivers/block/nbd.c:1043 [inline]
nbd_handle_cmd drivers/block/nbd.c:1085 [inline]
nbd_queue_rq+0xcbc/0x1220 drivers/block/nbd.c:1143
blk_mq_dispatch_rq_list+0x443/0x1dc0 block/blk-mq.c:2118
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
__blk_mq_sched_dispatch_requests+0xcdf/0x1620 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd8/0x1b0 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x239/0x670 block/blk-mq.c:2352
blk_mq_dispatch_plug_list block/blk-mq.c:2862 [inline]
blk_mq_flush_plug_list+0x673/0x1c60 block/blk-mq.c:2913
__blk_flush_plug+0x2c5/0x4b0 block/blk-core.c:1213
blk_finish_plug block/blk-core.c:1240 [inline]
blk_finish_plug block/blk-core.c:1237 [inline]
__submit_bio+0x439/0x540 block/blk-core.c:637
__submit_bio_noacct_mq block/blk-core.c:710 [inline]
submit_bio_noacct_nocheck+0x698/0xd70 block/blk-core.c:739
submit_bio_noacct+0x93a/0x1e20 block/blk-core.c:868
submit_bh fs/buffer.c:2819 [inline]
block_read_full_folio+0x812/0xa50 fs/buffer.c:2446
filemap_read_folio+0xc6/0x2a0 mm/filemap.c:2357
do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3817
read_mapping_folio include/linux/pagemap.h:1011 [inline]
read_part_sector+0xd4/0x310 block/partitions/core.c:722
adfspart_check_ICS+0x94/0x940 block/partitions/acorn.c:360
check_partition block/partitions/core.c:141 [inline]
blk_add_partitions block/partitions/core.c:589 [inline]
bdev_disk_changed+0x71f/0x1520 block/partitions/core.c:693
blkdev_get_whole+0x187/0x290 block/bdev.c:706
bdev_open+0x2c7/0xe20 block/bdev.c:915
blkdev_open+0x329/0x400 block/fops.c:627
do_dentry_open+0xf59/0x1ea0 fs/open.c:945
vfs_open+0x82/0x3f0 fs/open.c:1075
do_open fs/namei.c:3828 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3987
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1402
do_sys_open fs/open.c:1417 [inline]
__do_sys_openat fs/open.c:1433 [inline]
__se_sys_openat fs/open.c:1428 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1428
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f378fb169a4
RSP: 002b:00007ffe7f91c4d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000562eeea90890 RCX: 00007f378fb169a4
RDX: 00000000000a0800 RSI: 0000562eeea68650 RDI: 00000000ffffff9c
RBP: 0000562eeea68650 R08: 0000000000000001 R09: 00007f37900a0000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000562eeea87800 R14: 0000000000000001 R15: 0000562eeea5b2c0
Showing all locks held in the system:
2 locks held by kworker/u8:0/11:
1 lock held by khungtaskd/30:
#0: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
1 lock held by klogd/5180:
2 locks held by getty/5571:
#0: ffff88814e5800a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
3 locks held by udevd/7598:
#0: ffff88802627f4c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe20 block/bdev.c:903
#1: ffff888143358d10 (set->srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:158 [inline]
#1: ffff888143358d10 (set->srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:249 [inline]
#1: ffff888143358d10 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x22b/0x670 block/blk-mq.c:2352
#2: ffff8880263951f8 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xbe/0x1220 drivers/block/nbd.c:1135
3 locks held by udevd/7599:
#0: ffff8880261bb4c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe20 block/bdev.c:903
#1: ffff888140538290 (set->srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:158 [inline]
#1: ffff888140538290 (set->srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:249 [inline]
#1: ffff888140538290 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x22b/0x670 block/blk-mq.c:2352
#2: ffff88802625e178 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xbe/0x1220 drivers/block/nbd.c:1135
3 locks held by udevd/7900:
#0: ffff8880261bf4c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe20 block/bdev.c:903
#1: ffff888140538810 (set->srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:158 [inline]
#1: ffff888140538810 (set->srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:249 [inline]
#1: ffff888140538810 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x22b/0x670 block/blk-mq.c:2352
#2: ffff88802635e178 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xbe/0x1220 drivers/block/nbd.c:1135
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc7-syzkaller-00019-gc45323b7560e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xf14/0x1240 kernel/hung_task.c:397
kthread+0x2c1/0x3a0 kernel/kthread.c:389
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 UID: 0 PID: 8882 Comm: kworker/u8:13 Not tainted 6.13.0-rc7-syzkaller-00019-gc45323b7560e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:__lock_acquire+0xcb4/0x3c40 kernel/locking/lockdep.c:5222
Code: 14 02 48 c7 c0 b0 7c 5f 90 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b0 28 00 00 8b 1d 55 e6 e8 0e 85 db 75 40 44 8b 5c 24 08 <45> 85 db 0f 85 e0 06 00 00 4c 89 ff e8 6b 4c ff ff 48 ba 00 00 00
RSP: 0018:ffffc90004f0f5d0 EFLAGS: 00000046
RAX: 0000000000000003 RBX: 0000000000000000 RCX: ffffffff817698e2
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 000000009e615e41
RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff2dca798
R10: ffffffff96e53cc7 R11: 0000000000000004 R12: ffffed100619e5e3
R13: ffff888030cf2440 R14: 0000000000000002 R15: ffff888030cf2fc0
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f76a4147ab8 CR3: 000000002a294000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
debug_object_activate+0x149/0x4a0 lib/debugobjects.c:818
debug_timer_activate kernel/time/timer.c:835 [inline]
__mod_timer+0x81d/0xdc0 kernel/time/timer.c:1170
ieee80211_sta_merge_ibss net/mac80211/ibss.c:1272 [inline]
ieee80211_ibss_work+0x481/0x14c0 net/mac80211/ibss.c:1672
ieee80211_iface_work+0xd01/0xf00 net/mac80211/iface.c:1689
cfg80211_wiphy_work+0x3de/0x560 net/wireless/core.c:440
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3317 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244