INFO: task syz-executor.4:25531 blocked for more than 143 seconds.
Not tainted 6.6.0-rc2-syzkaller-00048-g42dc814987c1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28400 pid:25531 ppid:5083 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x5a10 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
rwsem_down_write_slowpath+0x53d/0x12a0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d3/0x200 kernel/locking/rwsem.c:1574
filemap_invalidate_lock include/linux/fs.h:847 [inline]
blk_ioctl_zeroout block/ioctl.c:184 [inline]
blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:510
blkdev_ioctl+0x249/0x770 block/ioctl.c:624
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8661a7cae9
RSP: 002b:00007f86628bd0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8661b9bf80 RCX: 00007f8661a7cae9
RDX: 0000000020000040 RSI: 000000000000127f RDI: 0000000000000003
RBP: 00007f8661ac847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f8661b9bf80 R15: 00007ffe97a22a08
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
2 locks held by getty/4794:
#0: ffff88802605b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc5/0x1480 drivers/tty/n_tty.c:2206
2 locks held by syz-executor.2/18533:
1 lock held by syz-executor.2/18611:
2 locks held by syz-executor.2/18666:
1 lock held by syz-executor.4/25531:
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline]
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:510
1 lock held by syz-executor.1/25563:
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline]
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:510
1 lock held by syz-executor.4/25650:
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline]
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:510
1 lock held by syz-executor.1/25652:
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline]
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:510
1 lock held by syz-executor.4/25726:
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline]
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:510
1 lock held by syz-executor.1/25730:
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline]
#0: ffff88801b226540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:510
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc2-syzkaller-00048-g42dc814987c1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 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+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1836 Comm: kworker/u4:7 Not tainted 6.6.0-rc2-syzkaller-00048-g42dc814987c1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:mark_lock+0x112/0x1950 kernel/locking/lockdep.c:4655
Code: 08 00 00 00 48 89 d0 48 89 54 24 38 48 c1 e8 06 48 8d 3c c5 80 ee 9e 91 e8 9b 76 75 00 48 8b 54 24 38 48 0f a3 15 1e ec 36 10 <0f> 83 61 01 00 00 48 69 d2 d0 00 00 00 48 81 c2 a0 f2 9e 91 48 8d
RSP: 0018:ffffc900055bf950 EFLAGS: 00000047
RAX: 0000000000000001 RBX: ffff8880210b6408 RCX: ffffffff81680255
RDX: 00000000000006dc RSI: 0000000000000008 RDI: ffffffff919eef58
RBP: ffffc900055bfac0 R08: 0000000000000000 R09: fffffbfff233ddeb
R10: ffffffff919eef5f R11: 0000000000000000 R12: 0000000000000040
R13: 0000000000000006 R14: 1ffff92000ab7f32 R15: ffff8880210b6428
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2044905866 CR3: 000000000c976000 CR4: 0000000000350ef0
Call Trace:
mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:4273
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4299 [inline]
lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4358 [inline]
lockdep_hardirqs_on_prepare+0x28f/0x410 kernel/locking/lockdep.c:4310
trace_hardirqs_on+0x36/0x40 kernel/trace/trace_preemptirq.c:61
__local_bh_enable_ip+0xa4/0x120 kernel/softirq.c:386
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_nc_purge_paths+0x1ce/0x3c0 net/batman-adv/network-coding.c:471
batadv_nc_worker+0x97a/0x10e0 net/batman-adv/network-coding.c:720
process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304