------------[ cut here ]------------ WARNING: CPU: 1 PID: 2114 at fs/ext4/page-io.c:205 ext4_add_complete_io fs/ext4/page-io.c:205 [inline] WARNING: CPU: 1 PID: 2114 at fs/ext4/page-io.c:205 ext4_put_io_end_defer+0x2bb/0x3b0 fs/ext4/page-io.c:268 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 2114 Comm: syz-executor4 Not tainted 4.9.133+ #52 ffff8801db707a48 ffffffff81b37069 ffffffff82a38ba0 00000000ffffffff 0000000000000000 0000000000000001 00000000000000cd ffff8801db707b08 ffffffff813f6a45 0000000041b58ab3 ffffffff82e299a3 ffffffff813f6886 Call Trace: [ 577.123855] [] __dump_stack lib/dump_stack.c:15 [inline] [ 577.123855] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bf/0x39f kernel/panic.c:179 [] __warn.cold.9+0xc1/0x17f kernel/panic.c:542 [] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585 [] ext4_add_complete_io fs/ext4/page-io.c:205 [inline] [] ext4_put_io_end_defer+0x2bb/0x3b0 fs/ext4/page-io.c:268 [] ext4_end_bio+0x136/0x460 fs/ext4/page-io.c:324 [] bio_endio+0x1a5/0x1f0 block/bio.c:1781 [] req_bio_endio block/blk-core.c:157 [inline] [] blk_update_request+0x248/0x9b0 block/blk-core.c:2628 [] scsi_end_request+0x9d/0x5c0 drivers/scsi/scsi_lib.c:606 [] scsi_io_completion+0x273/0x17a0 drivers/scsi/scsi_lib.c:829 [] scsi_finish_command+0x3ba/0x530 drivers/scsi/scsi.c:607 [] scsi_softirq_done+0x250/0x360 drivers/scsi/scsi_lib.c:1567 [] blk_done_softirq+0x27d/0x3e0 block/blk-softirq.c:35 [] __do_softirq+0x210/0x940 kernel/softirq.c:288 [] invoke_softirq kernel/softirq.c:368 [inline] [] irq_exit+0x114/0x150 kernel/softirq.c:409 [] exiting_irq arch/x86/include/asm/apic.h:669 [inline] [] do_IRQ+0x10d/0x1c0 arch/x86/kernel/irq.c:252 [] common_interrupt+0x9d/0x9d arch/x86/entry/entry_64.S:461 [ 577.291843] [] ? arch_local_irq_restore arch/x86/include/asm/paravirt.h:768 [inline] [ 577.291843] [] ? lock_release+0x557/0xc20 kernel/locking/lockdep.c:3778 [] rcu_lock_release include/linux/rcupdate.h:498 [inline] [] rcu_read_unlock include/linux/rcupdate.h:931 [inline] [] avc_has_perm_noaudit security/selinux/avc.c:1120 [inline] [] avc_has_perm+0x181/0x3a0 security/selinux/avc.c:1146 [] task_has_perm+0x1fc/0x330 security/selinux/hooks.c:1615 [] selinux_task_wait+0x23/0x30 security/selinux/hooks.c:3954 [] security_task_wait+0x73/0xb0 security/security.c:1032 [] wait_consider_task+0x2a1/0x3620 kernel/exit.c:1377 [] do_wait_thread kernel/exit.c:1490 [inline] [] do_wait+0x423/0x950 kernel/exit.c:1561 [] SYSC_wait4 kernel/exit.c:1693 [inline] [] SyS_wait4+0x12b/0x1f0 kernel/exit.c:1658 [] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Shutting down cpus with NMI Kernel Offset: disabled Rebooting in 86400 seconds..