INFO: task syz-executor.4:5988 blocked for more than 143 seconds. Not tainted 5.19.0-rc4-syzkaller-00187-g089866061428 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:28176 pid: 5988 ppid: 3652 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747 misc_open+0x5f/0x4a0 drivers/char/misc.c:107 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4a1/0x11f0 fs/open.c:848 do_open fs/namei.c:3520 [inline] path_openat+0x1c71/0x2910 fs/namei.c:3653 do_filp_open+0x1aa/0x400 fs/namei.c:3680 do_sys_openat2+0x16d/0x4c0 fs/open.c:1278 do_sys_open fs/open.c:1294 [inline] __do_sys_openat fs/open.c:1310 [inline] __se_sys_openat fs/open.c:1305 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1305 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f60d6e89109 RSP: 002b:00007f60d7f9f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f60d6f9bf60 RCX: 00007f60d6e89109 RDX: 0000000000000000 RSI: 0000000020000080 RDI: ffffffffffffff9c RBP: 00007f60d6ee305d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f60d74cfb1f R14: 00007f60d7f9f300 R15: 0000000000022000 INFO: task syz-executor.3:5991 blocked for more than 143 seconds. Not tainted 5.19.0-rc4-syzkaller-00187-g089866061428 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:28328 pid: 5991 ppid: 3651 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747 misc_open+0x5f/0x4a0 drivers/char/misc.c:107 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4a1/0x11f0 fs/open.c:848 do_open fs/namei.c:3520 [inline] path_openat+0x1c71/0x2910 fs/namei.c:3653 do_filp_open+0x1aa/0x400 fs/namei.c:3680 do_sys_openat2+0x16d/0x4c0 fs/open.c:1278 do_sys_open fs/open.c:1294 [inline] __do_sys_openat fs/open.c:1310 [inline] __se_sys_openat fs/open.c:1305 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1305 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f58ffa89109 RSP: 002b:00007f5900bcf168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f58ffb9bf60 RCX: 00007f58ffa89109 RDX: 0000000000000002 RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007f58ffae305d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f59000cfb1f R14: 00007f5900bcf300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/28: #0: ffffffff8bd86660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491 2 locks held by acpid/2961: #0: ffff88807a75c158 (&joydev->mutex){+.+.}-{3:3}, at: joydev_close_device drivers/input/joydev.c:220 [inline] #0: ffff88807a75c158 (&joydev->mutex){+.+.}-{3:3}, at: joydev_release+0x187/0x290 drivers/input/joydev.c:252 #1: ffff888020fa42c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_close_device+0x42/0x1f0 drivers/input/input.c:726 2 locks held by getty/3297: #0: ffff88807ec98098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124 6 locks held by kworker/0:8/3743: #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90004387da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff888020cc5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff888020cc5190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4690 drivers/usb/core/hub.c:5691 #3: ffff88805650b190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #3: ffff88805650b190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:964 #4: ffff88805650c118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #4: ffff88805650c118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:964 #5: ffffffff8ceafca8 (input_mutex){+.+.}-{3:3}, at: input_register_device.cold+0x34/0x304 drivers/input/input.c:2378 7 locks held by kworker/0:9/3745: #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90004577da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff8881476a5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff8881476a5190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4690 drivers/usb/core/hub.c:5691 #3: ffff888074674190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #3: ffff888074674190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:964 #4: ffff8880174f6118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #4: ffff8880174f6118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:964 #5: ffffffff8ceafca8 (input_mutex){+.+.}-{3:3}, at: input_register_device.cold+0x34/0x304 drivers/input/input.c:2378 #6: ffff888020fa42c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_register_handle+0x6d/0x510 drivers/input/input.c:2544 3 locks held by udevd/5881: #0: ffff8880762b6c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline] #0: ffff8880762b6c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x6e0 fs/kernfs/file.c:236 #1: ffff88806ef23830 (kn->active#84){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline] #1: ffff88806ef23830 (kn->active#84){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x6e0 fs/kernfs/file.c:236 #2: ffff888046acc190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline] #2: ffff888046acc190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873 6 locks held by kworker/0:0/5900: #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888011b9f138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000b087da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff888020d3d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff888020d3d190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4690 drivers/usb/core/hub.c:5691 #3: ffff888046acc190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #3: ffff888046acc190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:964 #4: ffff888046ac8118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #4: ffff888046ac8118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:964 #5: ffffffff8ceafca8 (input_mutex){+.+.}-{3:3}, at: input_register_device.cold+0x34/0x304 drivers/input/input.c:2378 3 locks held by udevd/5964: #0: ffff8880799e1488 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline] #0: ffff8880799e1488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x6e0 fs/kernfs/file.c:236 #1: ffff888077ef6748 (kn->active#84){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline] #1: ffff888077ef6748 (kn->active#84){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x6e0 fs/kernfs/file.c:236 #2: ffff888074674190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline] #2: ffff888074674190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873 2 locks held by syz-executor.5/5985: #0: ffffffff8c82f708 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5f/0x4a0 drivers/char/misc.c:107 #1: ffffffff8bc536e8 (system_transition_mutex){+.+.}-{3:3}, at: snapshot_open+0x3b/0x2a0 kernel/power/user.c:54 1 lock held by syz-executor.4/5988: #0: ffffffff8c82f708 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5f/0x4a0 drivers/char/misc.c:107 1 lock held by syz-executor.3/5991: #0: ffffffff8c82f708 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5f/0x4a0 drivers/char/misc.c:107 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.19.0-rc4-syzkaller-00187-g089866061428 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:369 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 46 Comm: kworker/u4:3 Not tainted 5.19.0-rc4-syzkaller-00187-g089866061428 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Workqueue: bat_events batadv_nc_worker RIP: 0010:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:341 [inline] RIP: 0010:rcu_is_watching+0x3b/0xb0 kernel/rcu/tree.c:1138 Code: d0 ae 03 00 83 f8 07 89 c5 77 77 48 8d 3c ed e0 b8 7f 8b 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 51 <48> 03 1c ed e0 b8 7f 8b 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 RSP: 0018:ffffc90000b77b98 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 000000000003aed0 RCX: ffffffff815e5211 RDX: 1ffffffff16ff71c RSI: 0000000000000002 RDI: ffffffff8b7fb8e0 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8dbb9157 R10: fffffbfff1b7722a R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: dffffc0000000000 R15: 000000000000002b FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc6acb4c10 CR3: 000000000ba8e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock_held_common kernel/rcu/update.c:108 [inline] rcu_read_lock_sched_held+0x1c/0x70 kernel/rcu/update.c:123 trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x560/0x780 kernel/locking/lockdep.c:5676 rcu_lock_release include/linux/rcupdate.h:274 [inline] rcu_read_unlock include/linux/rcupdate.h:728 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline] batadv_nc_worker+0x86b/0xfa0 net/batman-adv/network-coding.c:719 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ae scas %es:(%rdi),%al 1: 03 00 add (%rax),%eax 3: 83 f8 07 cmp $0x7,%eax 6: 89 c5 mov %eax,%ebp 8: 77 77 ja 0x81 a: 48 8d 3c ed e0 b8 7f lea -0x74804720(,%rbp,8),%rdi 11: 8b 12: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 19: fc ff df 1c: 48 89 fa mov %rdi,%rdx 1f: 48 c1 ea 03 shr $0x3,%rdx 23: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 27: 75 51 jne 0x7a * 29: 48 03 1c ed e0 b8 7f add -0x74804720(,%rbp,8),%rbx <-- trapping instruction 30: 8b 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df 3b: 48 89 da mov %rbx,%rdx 3e: 48 rex.W