------------[ cut here ]------------ WARNING: CPU: 1 PID: 0 at fs/ext4/page-io.c:205 ext4_add_complete_io fs/ext4/page-io.c:205 [inline] WARNING: CPU: 1 PID: 0 at fs/ext4/page-io.c:205 ext4_put_io_end_defer+0x21f/0x2d0 fs/ext4/page-io.c:268 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.9.128+ #41 ffff8801db707a60 ffffffff81af2469 ffffffff82838ba0 00000000ffffffff 0000000000000000 0000000000000001 00000000000000cd ffff8801db707b20 ffffffff813df985 0000000041b58ab3 ffffffff82c2896b ffffffff813df7c6 Call Trace: [ 695.277541] [] __dump_stack lib/dump_stack.c:15 [inline] [ 695.277541] [] 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+0x21f/0x2d0 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+0x205/0x2e0 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 [ 695.466421] [] ? native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:56 [] arch_safe_halt arch/x86/include/asm/paravirt.h:104 [inline] [] default_idle+0x55/0x360 arch/x86/kernel/process.c:437 [] arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:428 [] default_idle_call+0x45/0x60 kernel/sched/idle.c:97 [] cpuidle_idle_call kernel/sched/idle.c:155 [inline] [] cpu_idle_loop kernel/sched/idle.c:248 [inline] [] cpu_startup_entry+0x2b5/0x380 kernel/sched/idle.c:303 [] start_secondary+0x328/0x400 arch/x86/kernel/smpboot.c:251 Kernel Offset: disabled Rebooting in 86400 seconds..