INFO: task syz-executor.3:10206 blocked for more than 143 seconds. Not tainted 6.7.0-rc6-syzkaller-00194-g8afe6f0e0e25 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:28288 pid:10206 tgid:10205 ppid:10198 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0xedb/0x5af0 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6778 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747 blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 blkdev_ioctl+0x111/0x760 block/ioctl.c:622 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:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f0afca7cce9 RSP: 002b:00007f0afd8810c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0afcb9bf80 RCX: 00007f0afca7cce9 RDX: 0000000020000380 RSI: 00000000c0481273 RDI: 0000000000000004 RBP: 00007f0afcac947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0afcb9bf80 R15: 00007f0afccbfa48 INFO: task syz-executor.3:10207 blocked for more than 143 seconds. Not tainted 6.7.0-rc6-syzkaller-00194-g8afe6f0e0e25 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:29536 pid:10207 tgid:10205 ppid:10198 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0xedb/0x5af0 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6778 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747 blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 blkdev_common_ioctl+0x1566/0x1cd0 block/ioctl.c:562 blkdev_ioctl+0x243/0x760 block/ioctl.c:627 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:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f0afca7cce9 RSP: 002b:00007f0afd8600c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0afcb9c050 RCX: 00007f0afca7cce9 RDX: 0000000000000000 RSI: 0000000000001276 RDI: 0000000000000004 RBP: 00007f0afcac947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f0afcb9c050 R15: 00007f0afccbfa48 INFO: task syz-executor.3:10208 blocked for more than 144 seconds. Not tainted 6.7.0-rc6-syzkaller-00194-g8afe6f0e0e25 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:28288 pid:10208 tgid:10205 ppid:10198 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0xedb/0x5af0 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6778 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747 blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 blkdev_ioctl+0x111/0x760 block/ioctl.c:622 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:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f0afca7cce9 RSP: 002b:00007f0afd83f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0afcb9c120 RCX: 00007f0afca7cce9 RDX: 0000000020000380 RSI: 00000000c0481273 RDI: 0000000000000006 RBP: 00007f0afcac947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f0afcb9c120 R15: 00007f0afccbfa48 INFO: task syz-executor.3:10209 blocked for more than 144 seconds. Not tainted 6.7.0-rc6-syzkaller-00194-g8afe6f0e0e25 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:29536 pid:10209 tgid:10205 ppid:10198 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0xedb/0x5af0 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6778 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747 blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 blkdev_common_ioctl+0x1566/0x1cd0 block/ioctl.c:562 blkdev_ioctl+0x243/0x760 block/ioctl.c:627 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:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f0afca7cce9 RSP: 002b:00007f0afd81e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0afcb9c1f0 RCX: 00007f0afca7cce9 RDX: 0000000000000000 RSI: 0000000000001276 RDI: 0000000000000006 RBP: 00007f0afcac947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f0afcb9c1f0 R15: 00007f0afccbfa48 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffffffff8cfab760 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline] #0: ffffffff8cfab760 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline] #0: ffffffff8cfab760 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614 3 locks held by kworker/u4:2/34: 2 locks held by getty/4831: #0: ffff88802a4ba0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201 5 locks held by kworker/0:4/10045: #0: ffff8880b983c718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:566 [inline] #0: ffff8880b983c718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:551 #1: ffff8880b9828888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2d9/0x900 kernel/sched/psi.c:988 #2: ffff8880b98297d8 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x5d/0x200 kernel/time/timer.c:999 #3: ffffffff92977bc0 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x1a0/0x490 lib/debugobjects.c:717 #4: ffffffff92a2c358 (&obj_hash[i].lock){-.-.}-{2:2}, at: __debug_check_no_obj_freed lib/debugobjects.c:1020 [inline] #4: ffffffff92a2c358 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_check_no_obj_freed+0xe1/0x4c0 lib/debugobjects.c:1063 2 locks held by syz-executor.5/10194: 1 lock held by syz-executor.3/10206: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.3/10207: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.3/10208: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.3/10209: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.1/10251: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.1/10252: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.1/10253: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.0/10256: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.2/10260: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.4/10262: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.5/10281: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.3/10295: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.3/10296: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.3/10297: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.1/10344: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.1/10345: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.1/10346: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.1/10347: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.1/10348: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.1/10349: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.1/10350: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.0/10358: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.2/10361: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.4/10363: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.5/10381: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.3/10391: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.3/10392: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 1 lock held by syz-executor.3/10393: #0: ffff88814074efd8 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_ioctl+0xc9/0x290 kernel/trace/blktrace.c:736 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc6-syzkaller-00194-g8afe6f0e0e25 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x390 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+0x2c6/0x3a0 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:242 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 10118 Comm: kworker/u4:4 Not tainted 6.7.0-rc6-syzkaller-00194-g8afe6f0e0e25 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:mark_lock+0xdb/0xc50 kernel/locking/lockdep.c:4657 Code: eb 6f ff ff 48 ba 00 00 00 00 00 fc ff df 48 8d 78 60 48 89 f9 48 c1 e9 03 80 3c 11 00 0f 85 94 09 00 00 4c 89 ee 48 23 70 60 01 00 00 00 0f 84 16 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c RSP: 0018:ffffc900036df780 EFLAGS: 00000002 RAX: ffffffff91f259c0 RBX: ffff888020214640 RCX: 1ffffffff23e4b44 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffffff91f25a20 RBP: ffffc900036df8c0 R08: 0000000000000000 R09: fffffbfff23e37d2 R10: ffffffff91f1be97 R11: 0000000000000003 R12: ffff888020213b80 R13: 0000000000000004 R14: 0000000000000002 R15: 1ffff920006dbef6 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00dc56000 CR3: 000000008305f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:4274 __trace_hardirqs_on_caller kernel/locking/lockdep.c:4292 [inline] lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4359 [inline] lockdep_hardirqs_on_prepare+0x139/0x420 kernel/locking/lockdep.c:4311 trace_hardirqs_on+0x36/0x40 kernel/trace/trace_preemptirq.c:61 kasan_quarantine_put+0x102/0x230 mm/kasan/quarantine.c:242 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1800 [inline] slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826 slab_free mm/slub.c:3809 [inline] __kmem_cache_free+0xc0/0x180 mm/slub.c:3822 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1578 [inline] ieee80211_ibss_rx_queued_mgmt+0x1b00/0x3120 net/mac80211/ibss.c:1604 ieee80211_iface_process_skb net/mac80211/iface.c:1589 [inline] ieee80211_iface_work+0xa67/0xda0 net/mac80211/iface.c:1643 cfg80211_wiphy_work+0x24e/0x330 net/wireless/core.c:437 process_one_work+0x886/0x15d0 kernel/workqueue.c:2627 process_scheduled_works kernel/workqueue.c:2700 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2781 kthread+0x2c6/0x3a0 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:242