INFO: task syz-executor163:5000 blocked for more than 143 seconds. Not tainted 6.3.0-syzkaller-12049-g58390c8ce1bd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor163 state:D stack:27304 pid:5000 ppid:4998 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5343 [inline] __schedule+0x187b/0x4900 kernel/sched/core.c:6669 schedule+0xc3/0x180 kernel/sched/core.c:6745 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804 rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178 __down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306 filemap_invalidate_lock include/linux/fs.h:820 [inline] blkdev_fallocate+0x21b/0x3a0 block/fops.c:649 vfs_fallocate+0x54b/0x6b0 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xbd/0x100 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f79a170de09 RSP: 002b:00007ffc6ffd60b8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f79a170de09 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000010000000002 R11: 0000000000000246 R12: 00007f79a16d15e0 R13: 0000000000000000 R14: 00007ffc6ffd60e0 R15: 00007ffc6ffd60d0 INFO: task syz-executor163:5003 blocked for more than 143 seconds. Not tainted 6.3.0-syzkaller-12049-g58390c8ce1bd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor163 state:D stack:25536 pid:5003 ppid:4997 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5343 [inline] __schedule+0x187b/0x4900 kernel/sched/core.c:6669 schedule+0xc3/0x180 kernel/sched/core.c:6745 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804 rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178 __down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306 filemap_invalidate_lock include/linux/fs.h:820 [inline] blkdev_fallocate+0x21b/0x3a0 block/fops.c:649 vfs_fallocate+0x54b/0x6b0 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xbd/0x100 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f79a170de09 RSP: 002b:00007ffc6ffd60b8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f79a170de09 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000010000000002 R11: 0000000000000246 R12: 00007f79a16d15e0 R13: 0000000000000000 R14: 00007ffc6ffd60e0 R15: 00007ffc6ffd60d0 INFO: task syz-executor163:5004 blocked for more than 143 seconds. Not tainted 6.3.0-syzkaller-12049-g58390c8ce1bd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor163 state:D stack:27304 pid:5004 ppid:4999 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5343 [inline] __schedule+0x187b/0x4900 kernel/sched/core.c:6669 schedule+0xc3/0x180 kernel/sched/core.c:6745 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804 rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178 __down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306 filemap_invalidate_lock include/linux/fs.h:820 [inline] blkdev_fallocate+0x21b/0x3a0 block/fops.c:649 vfs_fallocate+0x54b/0x6b0 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xbd/0x100 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f79a170de09 RSP: 002b:00007ffc6ffd60b8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f79a170de09 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000010000000002 R11: 0000000000000246 R12: 00007f79a16d15e0 R13: 0000000000000000 R14: 00007ffc6ffd60e0 R15: 00007ffc6ffd60d0 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8cf277b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518 1 lock held by rcu_tasks_trace/14: #0: ffffffff8cf27b70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518 1 lock held by khungtaskd/29: #0: ffffffff8cf275e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 1 lock held by klogd/4433: 2 locks held by getty/4745: #0: ffff888028bfc098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176 1 lock held by syz-executor163/5000: #0: ffff88801dd813b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff88801dd813b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21b/0x3a0 block/fops.c:649 2 locks held by syz-executor163/5001: 1 lock held by syz-executor163/5003: #0: ffff88801dd813b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff88801dd813b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21b/0x3a0 block/fops.c:649 1 lock held by syz-executor163/5004: #0: ffff88801dd813b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff88801dd813b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21b/0x3a0 block/fops.c:649 1 lock held by syz-executor163/5022: #0: ffff88801dd813b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff88801dd813b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21b/0x3a0 block/fops.c:649 1 lock held by syz-executor163/5029: #0: ffff88801dd813b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff88801dd813b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21b/0x3a0 block/fops.c:649 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.3.0-syzkaller-12049-g58390c8ce1bd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xec2/0xf00 kernel/hung_task.c:379 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 10 Comm: kworker/u4:0 Not tainted 6.3.0-syzkaller-12049-g58390c8ce1bd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:jump_label_update+0x96/0x410 kernel/jump_label.c:819 Code: 03 00 00 8b 1d 6b 94 9b 0c bf 03 00 00 00 89 de e8 3f b0 d1 ff 83 fb 03 41 0f 92 c5 bf 01 00 00 00 e8 6e 2d a5 ff 48 8b 3c 24 05 f3 bd ff 48 85 c0 0f 84 06 02 00 00 48 89 c3 e8 64 ac d1 ff RSP: 0018:ffffc900000f7b08 EFLAGS: 00000246 RAX: 1ffff1100294d64f RBX: 0000000000000003 RCX: ffffffff8ab90a00 RDX: ffff888014a69dc0 RSI: 0000000000000003 RDI: ffffffff91b849e0 RBP: 0000000000000001 R08: ffffffff81ba02e1 R09: fffffbfff237093d R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff91b849e8 R13: ffff888014255b00 R14: dffffc0000000000 R15: 1ffffffff237093d FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc6ffd5f58 CR3: 000000000cd30000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: static_key_disable_cpuslocked+0xce/0x1b0 kernel/jump_label.c:235 static_key_disable+0x1a/0x20 kernel/jump_label.c:243 toggle_allocation_gate+0x1b8/0x250 mm/kfence/core.c:836 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405 worker_thread+0xa63/0x1210 kernel/workqueue.c:2552 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308