INFO: task syz-executor.2:19830 blocked for more than 143 seconds.
Not tainted 6.8.0-rc5-syzkaller-00163-gffd2cb6b718e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:26104 pid:19830 tgid:19827 ppid:18010 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1ae/0x200 kernel/locking/rwsem.c:1306
filemap_invalidate_lock include/linux/fs.h:849 [inline]
blk_ioctl_zeroout block/ioctl.c:185 [inline]
blkdev_common_ioctl+0x1718/0x2880 block/ioctl.c:514
blkdev_ioctl+0x532/0x740 block/ioctl.c:628
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0xfe/0x170 fs/ioctl.c:857
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fcd9d87dda9
RSP: 002b:00007fcd9e6af0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcd9d9ac050 RCX: 00007fcd9d87dda9
RDX: 0000000020000180 RSI: 000000000000127f RDI: 0000000000000003
RBP: 00007fcd9d8ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fcd9d9ac050 R15: 00007ffd15f08098
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u4:7/2394:
#0: ffff888014c89538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff888014c89538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc900095f7d20 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc900095f7d20 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
2 locks held by getty/4826:
#0: ffff88802ba930a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
5 locks held by kworker/0:6/5259:
#0: ffff88801beb2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff88801beb2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc90004ba7d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc90004ba7d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffff888024184190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff888024184190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x50f0 drivers/usb/core/hub.c:5811
#3: ffff8880a372e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#3: ffff8880a372e190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x520 drivers/base/dd.c:1005
#4: ffff88808395d160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#4: ffff88808395d160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x520 drivers/base/dd.c:1005
1 lock held by syz-executor.3/13571:
1 lock held by syz-executor.2/19830:
#0: ffff88801d0a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:849 [inline]
#0: ffff88801d0a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:185 [inline]
#0: ffff88801d0a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1718/0x2880 block/ioctl.c:514
1 lock held by syz-executor.0/19987:
#0: ffff88801d0a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:859 [inline]
#0: ffff88801d0a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225
1 lock held by syz-executor.0/20165:
#0: ffff88801d0a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:859 [inline]
#0: ffff88801d0a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225
1 lock held by syz-executor.0/20516:
#0: ffff88801d0a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:859 [inline]
#0: ffff88801d0a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225
1 lock held by udevd/20611:
#0: ffff8880b943c958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:567
3 locks held by syz-executor.0/20734:
2 locks held by syz-executor.4/20745:
1 lock held by modprobe/20747:
2 locks held by modprobe/20751:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc5-syzkaller-00163-gffd2cb6b718e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 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+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2f1/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 20747 Comm: modprobe Not tainted 6.8.0-rc5-syzkaller-00163-gffd2cb6b718e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:separate_irq_context kernel/locking/lockdep.c:4628 [inline]
RIP: 0010:__lock_acquire+0xd38/0x1fd0 kernel/locking/lockdep.c:5121
Code: 84 c0 0f 85 f6 0b 00 00 48 8b 04 24 8b 18 48 85 db 74 59 83 fb 31 0f 83 e1 10 00 00 48 8d 04 9b 48 8b 4c 24 08 48 8d 5c c1 f8 <48> 89 d8 48 c1 e8 03 0f b6 04 38 84 c0 0f 85 22 0d 00 00 8b 1b 48
RSP: 0000:ffffc9000414fc70 EFLAGS: 00000083
RAX: 0000000000000005 RBX: ffff888021518ae0 RCX: ffff888021518ac0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000
RBP: ffff888021518ae8 R08: ffffffff92c8c427 R09: 1ffffffff2591884
R10: dffffc0000000000 R11: fffffbfff2591885 R12: 51aa5165084179a0
R13: ffff888021518000 R14: 0000000000000000 R15: ffff888021518b08
FS: 00007f5a1f318380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005594daae52b8 CR3: 00000000ae9ae000 CR4: 0000000000350ef0
Call Trace:
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
rcu_read_lock include/linux/rcupdate.h:750 [inline]
vma_end_read+0x35/0x170 include/linux/mm.h:686
do_user_addr_fault arch/x86/mm/fault.c:1357 [inline]
handle_page_fault arch/x86/mm/fault.c:1498 [inline]
exc_page_fault+0x4bd/0x870 arch/x86/mm/fault.c:1554
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f5a1f41e77b
Code: 93 12 00 48 8d 34 18 48 39 cd 48 89 75 60 0f 95 c1 48 29 da 0f b6 c9 48 83 ca 01 48 c1 e1 02 48 09 d9 48 83 c9 01 48 89 48 08 <48> 89 56 08 4c 8d 40 10 e9 c0 00 00 00 8b 45 08 85 c0 0f 84 9c 00
RSP: 002b:00007ffe76c1ac10 EFLAGS: 00010206
RAX: 00005594daae4900 RBX: 00000000000009b0 RCX: 00000000000009b1
RDX: 000000000001fd51 RSI: 00005594daae52b0 RDI: 0000000000000004
RBP: 00007f5a1f547aa0 R08: 00007f5a1f548d30 R09: 00007f5a1f61fb5d
R10: 00000000000000a9 R11: 0000000000000000 R12: 0000000000000056
R13: 0000000000000099 R14: 00007f5a1f547b00 R15: 0000000000000000