INFO: task syz-executor.1:11179 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D26136 11179 8120 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 xlog_grant_head_wait+0x13b/0xcd0 fs/xfs/xfs_log.c:263 xlog_grant_head_check+0x3c8/0x420 fs/xfs/xfs_log.c:325 xfs_log_reserve+0x347/0xa70 fs/xfs/xfs_log.c:454 xfs_trans_reserve+0x63a/0x9c0 fs/xfs/xfs_trans.c:197 xfs_trans_alloc+0x2f7/0x700 fs/xfs/xfs_trans.c:289 xfs_qm_qino_alloc+0x19a/0x950 fs/xfs/xfs_qm.c:777 xfs_qm_init_quotainos+0x657/0x730 fs/xfs/xfs_qm.c:1564 xfs_qm_init_quotainfo+0x146/0xd70 fs/xfs/xfs_qm.c:659 xfs_qm_mount_quotas+0x55/0x680 fs/xfs/xfs_qm.c:1432 xfs_mountfs+0x17e2/0x1bf0 fs/xfs/xfs_mount.c:1001 xfs_fs_fill_super+0xd0e/0x1540 fs/xfs/xfs_super.c:1720 XFS (loop3): SB sanity check failed XFS (loop3): Metadata corruption detected at xfs_sb_read_verify+0x3e7/0x500 fs/xfs/libxfs/xfs_sb.c:685, xfs_sb block 0xffffffffffffffff mount_bdev+0x2fc/0x3b0 fs/super.c:1158 XFS (loop3): Unmount and run xfs_repair mount_fs+0xa3/0x310 fs/super.c:1261 XFS (loop3): First 128 bytes of corrupted metadata buffer: vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 000000004c670ac1: 58 46 53 42 00 00 02 00 00 00 00 00 a2 00 00 00 XFSB............ 000000001b807267: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000000e7707b73: 5e 62 73 b8 21 67 42 bb 91 1b 41 8a a1 4a 12 61 ^bs.!gB...A..J.a ksys_mount+0xcf/0x130 fs/namespace.c:3038 00000000affcd2de: 00 00 00 00 00 00 ff 80 00 00 00 00 00 00 00 20 ............... __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 0000000068db1deb: 00 00 00 00 00 00 00 21 00 00 00 00 00 00 00 2f .......!......./ do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe 000000006135f017: 00 00 00 08 00 00 80 00 00 00 00 02 00 00 00 00 ................ RIP: 0033:0x7f5aa3ba25fa Code: Bad RIP value. RSP: 002b:00007f5aa2112f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 0000000023863995: 00 00 0b 40 b4 b4 02 00 01 00 00 02 00 00 00 00 ...@............ RAX: ffffffffffffffda RBX: 000000000000baee RCX: 00007f5aa3ba25fa 000000004eebd81a: 00 00 00 00 00 00 00 00 09 09 08 01 0f 00 00 19 ................ RDX: 0000000020000080 RSI: 0000000020000240 RDI: 00007f5aa2112fe0 XFS (loop3): SB validate failed with error -117. RBP: 00007f5aa2113020 R08: 00007f5aa2113020 R09: 0000000002000010 R10: 0000000002000010 R11: 0000000000000202 R12: 0000000020000080 R13: 0000000020000240 R14: 00007f5aa2112fe0 R15: 0000000020000040 Showing all locks held in the system: XFS (loop5): SB sanity check failed XFS (loop5): Metadata corruption detected at xfs_sb_read_verify+0x3e7/0x500 fs/xfs/libxfs/xfs_sb.c:685, xfs_sb block 0xffffffffffffffff 1 lock held by khungtaskd/1569: #0: 000000007e47d1a3 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 3 locks held by kworker/u4:3/2886: 1 lock held by systemd-udevd/4699: 1 lock held by in:imklog/7801: 2 locks held by syz-executor.1/11179: #0: 00000000190645cf (&type->s_umount_key#53/1){+.+.}, at: alloc_super fs/super.c:226 [inline] #0: 00000000190645cf (&type->s_umount_key#53/1){+.+.}, at: sget_userns+0x20b/0xcd0 fs/super.c:519 #1: 000000004b1a8901 (sb_internal#2){.+.+}, at: sb_start_intwrite include/linux/fs.h:1626 [inline] #1: 000000004b1a8901 (sb_internal#2){.+.+}, at: xfs_trans_alloc+0x4fc/0x700 fs/xfs/xfs_trans.c:271 2 locks held by syz-executor.4/12369: #0: 00000000ec7d8baf (&type->s_umount_key#53/1){+.+.}, at: alloc_super fs/super.c:226 [inline] #0: 00000000ec7d8baf (&type->s_umount_key#53/1){+.+.}, at: sget_userns+0x20b/0xcd0 fs/super.c:519 #1: 00000000e6b013b2 (sb_internal#2){.+.+}, at: sb_start_intwrite include/linux/fs.h:1626 [inline] #1: 00000000e6b013b2 (sb_internal#2){.+.+}, at: xfs_trans_alloc+0x4fc/0x700 fs/xfs/xfs_trans.c:271 1 lock held by syz-executor.5/13191: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1569 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 XFS (loop5): Unmount and run xfs_repair nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 19653 Comm: kworker/0:1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Workqueue: events free_obj_work RIP: 0010:unwind_next_frame+0x42/0x1400 arch/x86/kernel/unwind_orc.c:397 Code: 81 ec e8 00 00 00 48 c7 44 24 48 b3 8a b5 41 48 8d 5c 24 48 48 c7 44 24 50 a0 af b6 89 48 c1 eb 03 48 c7 44 24 58 f0 80 29 81 <48> 8d 04 13 c7 00 f1 f1 f1 f1 c7 40 04 00 f2 f2 f2 c7 40 08 00 f2 RSP: 0018:ffff8880988af868 EFLAGS: 00000802 RAX: 0000000000000004 RBX: 1ffff11013115f16 RCX: 0000000000000005 RDX: dffffc0000000000 RSI: ffff8880988af7f8 RDI: ffff8880988af998 RBP: ffff8880988afa18 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880988af9f7 R11: 0000000000074071 R12: ffff8880988afa28 R13: 0000000000000000 R14: ffff8880988af998 R15: ffff8880988afcc8 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020063000 CR3: 0000000049a27000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000003b DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x126/0x1f0 mm/kasan/kasan.c:521 __cache_free mm/slab.c:3503 [inline] kmem_cache_free+0x7f/0x260 mm/slab.c:3765 free_obj_work+0x294/0x570 lib/debugobjects.c:242 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415