INFO: task syz-executor.1:22573 blocked for more than 143 seconds.
Not tainted 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:0 pid:22573 ppid:22558 flags:0x00000001
Call trace:
__switch_to+0x320/0x754 arch/arm64/kernel/process.c:556
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x103c/0x1e2c kernel/sched/core.c:6625
schedule+0xc4/0x170 kernel/sched/core.c:6701
blk_mq_freeze_queue_wait+0xf4/0x174 block/blk-mq.c:180
blk_freeze_queue+0xc8/0x104 block/blk-mq.c:207
blk_mq_freeze_queue+0x20/0x30 block/blk-mq.c:216
nbd_add_socket+0x154/0x76c drivers/block/nbd.c:1122
__nbd_ioctl drivers/block/nbd.c:1465 [inline]
nbd_ioctl+0x20c/0xc40 drivers/block/nbd.c:1522
blkdev_ioctl+0x408/0xb40 block/ioctl.c:615
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
el0_svc+0x4c/0x15c arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591
INFO: task syz-executor.1:22574 blocked for more than 143 seconds.
Not tainted 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:0 pid:22574 ppid:22558 flags:0x00000001
Call trace:
__switch_to+0x320/0x754 arch/arm64/kernel/process.c:556
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x103c/0x1e2c kernel/sched/core.c:6625
schedule+0xc4/0x170 kernel/sched/core.c:6701
__bio_queue_enter+0x22c/0x554 block/blk-core.c:360
bio_queue_enter block/blk.h:71 [inline]
blk_mq_get_new_requests block/blk-mq.c:2848 [inline]
blk_mq_submit_bio+0xa24/0x1d20 block/blk-mq.c:2958
__submit_bio+0x214/0x2a0 block/blk-core.c:602
__submit_bio_noacct_mq block/blk-core.c:679 [inline]
submit_bio_noacct_nocheck+0x770/0xb60 block/blk-core.c:708
submit_bio_noacct+0xce0/0x1648 block/blk-core.c:807
submit_bio+0x274/0x3d8 block/blk-core.c:843
submit_bio_wait+0x108/0x210 block/bio.c:1371
blkdev_issue_flush+0xb8/0x104 block/blk-flush.c:467
blkdev_fsync+0x7c/0xac block/fops.c:466
vfs_fsync_range fs/sync.c:188 [inline]
vfs_fsync fs/sync.c:202 [inline]
do_fsync fs/sync.c:212 [inline]
__do_sys_fsync fs/sync.c:220 [inline]
__se_sys_fsync fs/sync.c:218 [inline]
__arm64_sys_fsync+0x178/0x1c0 fs/sync.c:218
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
el0_svc+0x4c/0x15c arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffff800015f3f4d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffff800015f3fcd0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffff800015f3f300 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:326
1 lock held by klogd/5535:
2 locks held by getty/5686:
#0: ffff0000d43e7098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
#1: ffff80001acd02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177
2 locks held by kworker/u4:2/19953:
1 lock held by syz-executor.1/22573:
#0: ffff0000cc9ff998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x128/0xc40 drivers/block/nbd.c:1515
1 lock held by syz-executor.1/22628:
#0: ffff0000cc9ff998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x128/0xc40 drivers/block/nbd.c:1515
1 lock held by syz-executor.1/22697:
#0: ffff0000cc9ff998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x128/0xc40 drivers/block/nbd.c:1515
1 lock held by syz-executor.1/22698:
#0: ffff0000cc9ff998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x128/0xc40 drivers/block/nbd.c:1515
1 lock held by syz-executor.1/22699:
#0: ffff0000cc9ff998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x128/0xc40 drivers/block/nbd.c:1515
1 lock held by syz-executor.1/22700:
#0: ffff0000cc9ff998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x128/0xc40 drivers/block/nbd.c:1515
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