INFO: task syz-executor.3:8271 blocked for more than 143 seconds. Not tainted 5.9.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:14200 pid: 8271 ppid: 6956 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x404/0x8a0 kernel/sched/core.c:4527 schedule+0x37/0xe0 kernel/sched/core.c:4602 schedule_timeout+0x224/0x2d0 kernel/time/timer.c:1855 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0xa7/0x110 kernel/sched/completion.c:138 io_sq_thread_stop fs/io_uring.c:6900 [inline] io_finish_async+0x1a/0x60 fs/io_uring.c:6914 io_sq_offload_create fs/io_uring.c:7589 [inline] io_uring_create fs/io_uring.c:8665 [inline] io_uring_setup+0xc87/0xca0 fs/io_uring.c:8738 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: Bad RIP value. RSP: 002b:00007f9d96f9dbf8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000020000100 RCX: 000000000045d5b9 RDX: 0000000020ffa000 RSI: 0000000020000100 RDI: 0000000000003ffe RBP: 000000000118cf98 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020ffa000 R13: 0000000020ff9000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.3:8278 blocked for more than 143 seconds. Not tainted 5.9.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:14200 pid: 8278 ppid: 6956 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x404/0x8a0 kernel/sched/core.c:4527 schedule+0x37/0xe0 kernel/sched/core.c:4602 schedule_timeout+0x224/0x2d0 kernel/time/timer.c:1855 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0xa7/0x110 kernel/sched/completion.c:138 io_sq_thread_stop fs/io_uring.c:6900 [inline] io_finish_async+0x1a/0x60 fs/io_uring.c:6914 io_sq_offload_create fs/io_uring.c:7589 [inline] io_uring_create fs/io_uring.c:8665 [inline] io_uring_setup+0xc87/0xca0 fs/io_uring.c:8738 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: Bad RIP value. RSP: 002b:00007f9d96f7cbf8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000020000100 RCX: 000000000045d5b9 RDX: 0000000020ffa000 RSI: 0000000020000100 RDI: 0000000000003ffe RBP: 000000000118d038 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020ffa000 R13: 0000000020ff9000 R14: 0000000000000000 R15: 0000000000000000 INFO: task io_uring-sq:8272 blocked for more than 143 seconds. Not tainted 5.9.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:io_uring-sq state:D stack:15360 pid: 8272 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x404/0x8a0 kernel/sched/core.c:4527 schedule+0x37/0xe0 kernel/sched/core.c:4602 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4661 kthread+0xe4/0x170 kernel/kthread.c:285 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 INFO: task syz-executor.5:8274 blocked for more than 143 seconds. Not tainted 5.9.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:14616 pid: 8274 ppid: 6966 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x404/0x8a0 kernel/sched/core.c:4527 schedule+0x37/0xe0 kernel/sched/core.c:4602 schedule_timeout+0x224/0x2d0 kernel/time/timer.c:1855 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0xa7/0x110 kernel/sched/completion.c:138 io_sq_thread_stop fs/io_uring.c:6900 [inline] io_finish_async+0x1a/0x60 fs/io_uring.c:6914 io_sq_offload_create fs/io_uring.c:7589 [inline] io_uring_create fs/io_uring.c:8665 [inline] io_uring_setup+0xc87/0xca0 fs/io_uring.c:8738 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: Bad RIP value. RSP: 002b:00007fbd48686bf8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000020000100 RCX: 000000000045d5b9 RDX: 0000000020ffa000 RSI: 0000000020000100 RDI: 0000000000003ffe RBP: 000000000118cf98 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020ffa000 R13: 0000000020ff9000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.5:8291 blocked for more than 143 seconds. Not tainted 5.9.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:14696 pid: 8291 ppid: 6966 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x404/0x8a0 kernel/sched/core.c:4527 schedule+0x37/0xe0 kernel/sched/core.c:4602 schedule_timeout+0x224/0x2d0 kernel/time/timer.c:1855 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0xa7/0x110 kernel/sched/completion.c:138 io_sq_thread_stop fs/io_uring.c:6900 [inline] io_finish_async+0x1a/0x60 fs/io_uring.c:6914 io_sq_offload_create fs/io_uring.c:7589 [inline] io_uring_create fs/io_uring.c:8665 [inline] io_uring_setup+0xc87/0xca0 fs/io_uring.c:8738 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: Bad RIP value. RSP: 002b:00007fbd48665bf8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000020000100 RCX: 000000000045d5b9 RDX: 0000000020ffa000 RSI: 0000000020000100 RDI: 0000000000003ffe RBP: 000000000118d038 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020ffa000 R13: 0000000020ff9000 R14: 0000000000000000 R15: 0000000000000000 INFO: task io_uring-sq:8275 blocked for more than 144 seconds. Not tainted 5.9.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:io_uring-sq state:D stack:15360 pid: 8275 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x404/0x8a0 kernel/sched/core.c:4527 schedule+0x37/0xe0 kernel/sched/core.c:4602 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4661 kthread+0xe4/0x170 kernel/kthread.c:285 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 INFO: task io_uring-sq:8279 blocked for more than 144 seconds. Not tainted 5.9.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:io_uring-sq state:D stack:15360 pid: 8279 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x404/0x8a0 kernel/sched/core.c:4527 schedule+0x37/0xe0 kernel/sched/core.c:4602 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4661 kthread+0xe4/0x170 kernel/kthread.c:285 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 INFO: task syz-executor.0:8284 blocked for more than 144 seconds. Not tainted 5.9.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:14504 pid: 8284 ppid: 6963 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x404/0x8a0 kernel/sched/core.c:4527 schedule+0x37/0xe0 kernel/sched/core.c:4602 schedule_timeout+0x224/0x2d0 kernel/time/timer.c:1855 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0xa7/0x110 kernel/sched/completion.c:138 io_sq_thread_stop fs/io_uring.c:6900 [inline] io_finish_async+0x1a/0x60 fs/io_uring.c:6914 io_sq_offload_create fs/io_uring.c:7589 [inline] io_uring_create fs/io_uring.c:8665 [inline] io_uring_setup+0xc87/0xca0 fs/io_uring.c:8738 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: Bad RIP value. RSP: 002b:00007fb5e6a7fbf8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000020000100 RCX: 000000000045d5b9 RDX: 0000000020ffa000 RSI: 0000000020000100 RDI: 0000000000003ffe RBP: 000000000118cf98 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020ffa000 R13: 0000000020ff9000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.0:8303 blocked for more than 144 seconds. Not tainted 5.9.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:14696 pid: 8303 ppid: 6963 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x404/0x8a0 kernel/sched/core.c:4527 schedule+0x37/0xe0 kernel/sched/core.c:4602 schedule_timeout+0x224/0x2d0 kernel/time/timer.c:1855 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0xa7/0x110 kernel/sched/completion.c:138 io_sq_thread_stop fs/io_uring.c:6900 [inline] io_finish_async+0x1a/0x60 fs/io_uring.c:6914 io_sq_offload_create fs/io_uring.c:7589 [inline] io_uring_create fs/io_uring.c:8665 [inline] io_uring_setup+0xc87/0xca0 fs/io_uring.c:8738 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: Bad RIP value. RSP: 002b:00007fb5e6a5ebf8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000020000100 RCX: 000000000045d5b9 RDX: 0000000020ffa000 RSI: 0000000020000100 RDI: 0000000000003ffe RBP: 000000000118d038 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020ffa000 R13: 0000000020ff9000 R14: 0000000000000000 R15: 0000000000000000 INFO: task io_uring-sq:8285 blocked for more than 144 seconds. Not tainted 5.9.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:io_uring-sq state:D stack:15360 pid: 8285 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x404/0x8a0 kernel/sched/core.c:4527 schedule+0x37/0xe0 kernel/sched/core.c:4602 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4661 kthread+0xe4/0x170 kernel/kthread.c:285 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Showing all locks held in the system: 2 locks held by kworker/u4:4/549: #0: ffff88812c12dbd8 (&rq->lock){-.-.}-{2:2}, at: newidle_balance+0x430/0x630 kernel/sched/fair.c:10555 #1: ffffffff842f5dc0 (rcu_read_lock){....}-{1:2}, at: __update_idle_core+0x0/0x200 kernel/sched/fair.c:5211 1 lock held by khungtaskd/1171: #0: ffffffff842f5dc0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x15/0x17a kernel/locking/lockdep.c:5830 1 lock held by systemd-journal/3908: #0: ffff88812c12dbd8 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1292 [inline] #0: ffff88812c12dbd8 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x10b/0x8a0 kernel/sched/core.c:4445 1 lock held by in:imklog/6380: #0: ffff8881202a1ef0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x45/0x50 fs/file.c:930 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1171 Comm: khungtaskd Not tainted 5.9.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xa3/0xcc lib/dump_stack.c:118 nmi_cpu_backtrace.cold.8+0x3e/0x58 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0xd5/0xec lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline] watchdog+0x58e/0x680 kernel/hung_task.c:295 kthread+0x148/0x170 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 549 Comm: kworker/u4:4 Not tainted 5.9.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_tt_purge RIP: 0010:__lock_acquire+0x475/0x16e0 kernel/locking/lockdep.c:4416 Code: 85 48 05 00 00 4c 89 e8 44 89 6c 24 18 48 c1 e8 20 89 c1 89 44 24 20 44 01 e8 c1 c1 04 89 44 24 28 89 4c 24 30 48 83 3c 24 00 <74> 69 65 4c 8b 34 25 c0 7e 01 00 41 8b 96 e0 08 00 00 45 31 ed 49 RSP: 0018:ffffc9000152fcd0 EFLAGS: 00000046 RAX: 00000000b90161eb RBX: 0000000000000825 RCX: 00000000e7120ca3 RDX: 0000000000000008 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff88812b240380 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: bea883e0682e68b8 R12: ffff88812b240cb8 R13: 3e7120ca7a904121 R14: 0000000000000004 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88812c100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdaba3b6000 CR3: 000000011f0c2000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0xd7/0x3e0 kernel/locking/lockdep.c:5006 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:359 [inline] batadv_tt_global_purge net/batman-adv/translation-table.c:2511 [inline] batadv_tt_purge+0x63/0x280 net/batman-adv/translation-table.c:3802 process_one_work+0x26a/0x5f0 kernel/workqueue.c:2269 worker_thread+0x38/0x380 kernel/workqueue.c:2415 kthread+0x148/0x170 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294