================================ WARNING: inconsistent lock state 4.19.185-syzkaller #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.3/25885 [HC1[1]:SC0[0]:HE0:SE1] takes: 00000000f3f92c3e (hugetlb_lock){?.+.}, at: spin_lock include/linux/spinlock.h:329 [inline] 00000000f3f92c3e (hugetlb_lock){?.+.}, at: free_huge_page+0x482/0xd20 mm/hugetlb.c:1294 {HARDIRQ-ON-W} state was registered at: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] hugetlb_overcommit_handler+0x2d4/0x460 mm/hugetlb.c:3041 proc_sys_call_handler.isra.0+0x1f3/0x3b0 fs/proc/proc_sysctl.c:597 __vfs_write+0xf7/0x770 fs/read_write.c:485 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe irq event stamp: 184812 hardirqs last enabled at (184811): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (184811): [] _raw_spin_unlock_irq+0x24/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (184812): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (182412): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (182383): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (182383): [] irq_exit+0x215/0x260 kernel/softirq.c:412 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(hugetlb_lock); lock(hugetlb_lock); *** DEADLOCK *** 1 lock held by syz-executor.3/25885: #0: 000000009aeffd18 (&(&virtscsi_vq->vq_lock)->rlock){-.-.}, at: virtscsi_vq_done drivers/scsi/virtio_scsi.c:219 [inline] #0: 000000009aeffd18 (&(&virtscsi_vq->vq_lock)->rlock){-.-.}, at: virtscsi_req_done+0x123/0x210 drivers/scsi/virtio_scsi.c:238 stack backtrace: CPU: 0 PID: 25885 Comm: syz-executor.3 Not tainted 4.19.185-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+0x1fc/0x2ef lib/dump_stack.c:118 print_usage_bug.cold+0x42e/0x570 kernel/locking/lockdep.c:2544 valid_state kernel/locking/lockdep.c:2557 [inline] mark_lock_irq kernel/locking/lockdep.c:2751 [inline] mark_lock+0xc70/0x1160 kernel/locking/lockdep.c:3131 mark_irqflags kernel/locking/lockdep.c:3006 [inline] __lock_acquire+0x1077/0x3ff0 kernel/locking/lockdep.c:3372 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3907 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] free_huge_page+0x482/0xd20 mm/hugetlb.c:1294 __put_page+0xe2/0x3a0 mm/swap.c:112 put_page include/linux/mm.h:963 [inline] bio_release_pages+0x1cf/0x320 block/bio.c:1607 bio_check_pages_dirty+0x272/0x410 block/bio.c:1659 dio_bio_complete+0x567/0x710 fs/direct-io.c:552 dio_bio_end_aio+0x42/0x490 fs/direct-io.c:357 bio_endio+0x471/0x810 block/bio.c:1780 req_bio_endio block/blk-core.c:278 [inline] blk_update_request+0x30f/0xaf0 block/blk-core.c:3112 scsi_end_request+0x7d/0xb60 drivers/scsi/scsi_lib.c:673 scsi_io_completion+0x279/0x17c0 drivers/scsi/scsi_lib.c:1102 scsi_softirq_done+0x336/0x3d0 drivers/scsi/scsi_lib.c:1758 __blk_mq_complete_request block/blk-mq.c:583 [inline] blk_mq_complete_request+0x472/0x660 block/blk-mq.c:620 virtscsi_vq_done drivers/scsi/virtio_scsi.c:223 [inline] virtscsi_req_done+0x14b/0x210 drivers/scsi/virtio_scsi.c:238 vring_interrupt+0x12f/0x220 drivers/virtio/virtio_ring.c:953 __handle_irq_event_percpu+0x27e/0x8e0 kernel/irq/handle.c:149 handle_irq_event_percpu kernel/irq/handle.c:189 [inline] handle_irq_event+0x102/0x290 kernel/irq/handle.c:206 handle_edge_irq+0x260/0xcf0 kernel/irq/chip.c:797 generic_handle_irq_desc include/linux/irqdesc.h:155 [inline] handle_irq+0x35/0x50 arch/x86/kernel/irq_64.c:87 do_IRQ+0x93/0x1c0 arch/x86/kernel/irq.c:246 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:670 RIP: 0010:hrtimer_active+0x2/0x230 kernel/time/hrtimer.c:1342 Code: 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 0e 48 89 6b 40 5b 5d c3 e8 49 4a 44 00 eb cf e8 42 4a 44 00 eb eb 41 57 <48> 8d 47 30 41 56 48 8d 4f 38 49 be 00 00 00 00 00 fc ff df 41 55 RSP: 0018:ffff8880964e7c58 EFLAGS: 00000293 ORIG_RAX: ffffffffffffffdb RAX: ffff88803c620380 RBX: ffff8880964e7d90 RCX: ffffffff8817b0db RDX: 0000000000000000 RSI: ffffffff8817b0e9 RDI: ffff8880964e7d90 RBP: ffff8880964e7d48 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880964e7dd0 R14: ffff88803c620380 R15: 0000000000000000 hrtimer_try_to_cancel kernel/time/hrtimer.c:1165 [inline] hrtimer_cancel kernel/time/hrtimer.c:1191 [inline] do_nanosleep+0x361/0x6c0 kernel/time/hrtimer.c:1711 hrtimer_nanosleep+0x24d/0x570 kernel/time/hrtimer.c:1763 common_nsleep+0x23/0x30 kernel/time/posix-timers.c:1204 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1231 [inline] __se_sys_clock_nanosleep+0x261/0x360 kernel/time/posix-timers.c:1209 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x48a621 Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 aa e7 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 e3 e7 ff ff 48 8b 04 24 eb 97 66 2e 0f 1f RSP: 002b:00007ffc32bcc500 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 000000000000000a RCX: 000000000048a621 RDX: 00007ffc32bcc540 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffc32bcc5dc R08: 0000000000000000 R09: 0000008c916064ea R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 000000000007f4a1 R14: 0000000000000005 R15: 00007ffc32bcc640 Bluetooth: hci3: command 0x040f tx timeout capability: warning: `syz-executor.2' uses 32-bit capabilities (legacy support in use) 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd Bluetooth: hci3: command 0x0419 tx timeout 9pnet: Insufficient options for proto=fd squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on loop1 squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on loop1 BTRFS: device fsid abb5d618-46c7-4e89-943b-7a9d2665c168 devid 1 transid 7 /dev/loop0 BTRFS error (device loop0): superblock checksum mismatch BTRFS error (device loop0): open_ctree failed BTRFS error (device loop0): superblock checksum mismatch BTRFS error (device loop0): open_ctree failed qnx4: no qnx4 filesystem (no root dir). qnx4: no qnx4 filesystem (no root dir).