INFO: task syz-executor.0:5718 blocked for more than 143 seconds.
Not tainted 6.6.0-rc1-next-20230915-syzkaller-05666-gdfa449a58323 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27936 pid:5718 ppid:5404 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5365 [inline]
__schedule+0xee1/0x5a10 kernel/sched/core.c:6677
schedule+0xe7/0x1b0 kernel/sched/core.c:6753
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6812
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x969/0x1340 kernel/locking/mutex.c:747
nbd_start_device_ioctl drivers/block/nbd.c:1427 [inline]
__nbd_ioctl drivers/block/nbd.c:1486 [inline]
nbd_ioctl+0x312/0xc50 drivers/block/nbd.c:1526
blkdev_ioctl+0x2f9/0x770 block/ioctl.c:630
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:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f32c7c7c8d9
RSP: 002b:00007f32c89eb0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f32c7d9bf80 RCX: 00007f32c7c7c8d9
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003
RBP: 00007f32c7cd8b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f32c7d9bf80 R15: 00007ffda76e66e8
INFO: task syz-executor.0:5723 blocked for more than 143 seconds.
Not tainted 6.6.0-rc1-next-20230915-syzkaller-05666-gdfa449a58323 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:29040 pid:5723 ppid:5404 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5365 [inline]
__schedule+0xee1/0x5a10 kernel/sched/core.c:6677
schedule+0xe7/0x1b0 kernel/sched/core.c:6753
blk_mq_freeze_queue_wait+0x13f/0x190 block/blk-mq.c:140
nbd_add_socket+0x18c/0x980 drivers/block/nbd.c:1128
__nbd_ioctl drivers/block/nbd.c:1469 [inline]
nbd_ioctl+0x805/0xc50 drivers/block/nbd.c:1526
blkdev_ioctl+0x2f9/0x770 block/ioctl.c:630
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:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f32c7c7c8d9
RSP: 002b:00007f32c89ca0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f32c7d9c050 RCX: 00007f32c7c7c8d9
RDX: 0000000000000005 RSI: 000000000000ab00 RDI: 0000000000000004
RBP: 00007f32c7cd8b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f32c7d9c050 R15: 00007ffda76e66e8
Showing all locks held in the system:
3 locks held by kworker/0:1/9:
#0: ffff8880b983c718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:558
#1: ffff8880b9828888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x20c/0x900 kernel/sched/psi.c:987
#2: ffff888070fb0768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5847 [inline]
#2: ffff888070fb0768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_wiphy_work+0x2b/0x330 net/wireless/core.c:422
1 lock held by khungtaskd/29:
#0: ffffffff8cbaaa60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8cbaaa60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8cbaaa60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
2 locks held by getty/4800:
#0: ffff88802aaa00a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc5/0x1480 drivers/tty/n_tty.c:2206
1 lock held by udevd/5403:
#0: ffff888141bdf4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:786
1 lock held by syz-executor.0/5718:
#0: ffff88801cf41198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_start_device_ioctl drivers/block/nbd.c:1427 [inline]
#0: ffff88801cf41198 (&nbd->config_lock){+.+.}-{3:3}, at: __nbd_ioctl drivers/block/nbd.c:1486 [inline]
#0: ffff88801cf41198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x312/0xc50 drivers/block/nbd.c:1526
1 lock held by syz-executor.0/5723:
#0: ffff88801cf41198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x151/0xc50 drivers/block/nbd.c:1519
1 lock held by syz-executor.0/5786:
#0: ffff888141bdf4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:786
1 lock held by syz-executor.0/5787:
#0: ffff888141bdf4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:786
1 lock held by syz-executor.0/5804:
#0: ffff888141bdf4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:786
1 lock held by syz-executor.0/5805:
#0: ffff888141bdf4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:786
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc1-next-20230915-syzkaller-05666-gdfa449a58323 #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 925 Comm: kworker/1:3 Not tainted 6.6.0-rc1-next-20230915-syzkaller-05666-gdfa449a58323 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:__sanitizer_cov_trace_pc+0x3b/0x70 kernel/kcov.c:207
Code: 81 e1 00 01 00 00 65 48 8b 14 25 c0 bc 03 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 fc 15 00 00 85 c0 74 2b 8b 82 d8 15 00 00 <83> f8 02 75 20 48 8b 8a e0 15 00 00 8b 92 dc 15 00 00 48 8b 01 48
RSP: 0018:ffffc9000449f6a0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8ede962c RCX: 0000000000000000
RDX: ffff88801d4f1dc0 RSI: ffffffff813a4d41 RDI: 0000000000000006
RBP: ffffffff8ede9628 R08: 0000000000000006 R09: ffffffff8155cc53
R10: ffffffff8155cbc4 R11: 33fe8ca6d3d5f0b6 R12: ffffffff8155cc53
R13: ffffffff8155cbc4 R14: dffffc0000000000 R15: ffffffff8ede9628
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055652f231680 CR3: 000000002aaee000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__orc_find+0xe1/0x130 arch/x86/kernel/unwind_orc.c:109
orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
unwind_next_frame+0x329/0x2390 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:46
kasan_set_track+0x25/0x30 mm/kasan/common.c:53
____kasan_kmalloc mm/kasan/common.c:375 [inline]
__kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:384
kasan_kmalloc include/linux/kasan.h:198 [inline]
__do_kmalloc_node mm/slab_common.c:1023 [inline]
__kmalloc_node_track_caller+0x61/0x100 mm/slab_common.c:1043
kmalloc_reserve+0xef/0x260 net/core/skbuff.c:581
__alloc_skb+0x12b/0x330 net/core/skbuff.c:650
alloc_skb include/linux/skbuff.h:1286 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
nsim_dev_trap_report_work+0x29e/0xc70 drivers/net/netdevsim/dev.c:850
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