00000000270ec712: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 000000009b434c15: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000000263139ac: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000000c931fde2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000000f34bd8d1: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ INFO: task syz-executor.4:8112 blocked for more than 140 seconds. 00000000815cdfc9: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ XFS (loop4): metadata I/O error in "xfs_trans_read_buf_map" at daddr 0x4 len 1 error 117 Not tainted 4.19.211-syzkaller #0 XFS (loop4): page discard on page 000000001b2cb4af, inode 0x2a, offset 16072704. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. XFS (loop4): Metadata corruption detected at xfs_allocbt_verify+0x327/0x4a0 fs/xfs/libxfs/xfs_alloc_btree.c:329, xfs_allocbt block 0x4 syz-executor.4 D24152 8112 1 0x00000004 XFS (loop4): Unmount and run xfs_repair XFS (loop4): First 128 bytes of corrupted metadata buffer: Call Trace: 00000000481571ba: 07 42 54 42 00 00 00 01 ff ff ff ff ff ff ff ff .BTB............ context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 00000000777c2661: 00 00 00 42 00 00 7f be 00 00 00 42 00 00 7f be ...B.......B.... 00000000a79376d4: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 000000001f2bfb76: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 0000000040316c31: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 000000000667506e: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 000000002690b59d: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ schedule+0x8d/0x1b0 kernel/sched/core.c:3561 00000000e7da0d37: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ XFS (loop4): metadata I/O error in "xfs_trans_read_buf_map" at daddr 0x4 len 1 error 117 wb_wait_for_completion+0x175/0x1f0 fs/fs-writeback.c:222 XFS (loop4): page discard on page 000000003c7b70d7, inode 0x2a, offset 16076800. XFS (loop4): Metadata corruption detected at xfs_allocbt_verify+0x327/0x4a0 fs/xfs/libxfs/xfs_alloc_btree.c:329, xfs_allocbt block 0x4 XFS (loop4): Unmount and run xfs_repair sync_inodes_sb+0x19d/0x9a0 fs/fs-writeback.c:2459 XFS (loop4): First 128 bytes of corrupted metadata buffer: 00000000557ff7a2: 07 42 54 42 00 00 00 01 ff ff ff ff ff ff ff ff .BTB............ 00000000c4246646: 00 00 00 42 00 00 7f be 00 00 00 42 00 00 7f be ...B.......B.... 00000000174834e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 000000005f2dbeff: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000000a9695f7f: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 000000006e09b2fb: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ __sync_filesystem fs/sync.c:34 [inline] sync_filesystem+0x15c/0x250 fs/sync.c:67 000000000b3db8a8: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 0000000080464acb: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ generic_shutdown_super+0x70/0x370 fs/super.c:442 XFS (loop4): metadata I/O error in "xfs_trans_read_buf_map" at daddr 0x4 len 1 error 117 XFS (loop4): page discard on page 00000000d0b16684, inode 0x2a, offset 16080896. kill_block_super+0x97/0xf0 fs/super.c:1185 XFS (loop4): Metadata corruption detected at xfs_allocbt_verify+0x327/0x4a0 fs/xfs/libxfs/xfs_alloc_btree.c:329, xfs_allocbt block 0x4 deactivate_locked_super+0x94/0x160 fs/super.c:329 XFS (loop4): Unmount and run xfs_repair deactivate_super+0x174/0x1a0 fs/super.c:360 XFS (loop4): First 128 bytes of corrupted metadata buffer: cleanup_mnt+0x1a8/0x290 fs/namespace.c:1098 task_work_run+0x148/0x1c0 kernel/task_work.c:113 000000003cdccef1: 07 42 54 42 00 00 00 01 ff ff ff ff ff ff ff ff .BTB............ tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 0000000014497586: 00 00 00 42 00 00 7f be 00 00 00 42 00 00 7f be ...B.......B.... entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc5ed200537 Code: Bad RIP value. 00000000851fc208: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ RSP: 002b:00007ffcb7268728 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 000000001489aece: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc5ed200537 000000007ffa736a: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ RDX: 00007ffcb72687fb RSI: 000000000000000a RDI: 00007ffcb72687f0 RBP: 00007ffcb72687f0 R08: 00000000ffffffff R09: 00007ffcb72685c0 R10: 00005555559bc903 R11: 0000000000000246 R12: 00007fc5ed259b24 0000000013996c7e: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ R13: 00007ffcb72698b0 R14: 00005555559bc810 R15: 00007ffcb72698f0 Showing all locks held in the system: 000000003ca07b18: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 1 lock held by khungtaskd/1568: #0: 00000000d0878857 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 00000000e5c6e568: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 1 lock held by in:imklog/7811: #0: 00000000e7e2a4e2 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 XFS (loop4): metadata I/O error in "xfs_trans_read_buf_map" at daddr 0x4 len 1 error 117 2 locks held by agetty/7822: #0: 0000000059cd3146 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 XFS (loop4): page discard on page 00000000ebe71051, inode 0x2a, offset 16084992. #1: 00000000dd8c591b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 2 locks held by syz-executor.4/8112: XFS (loop4): Metadata corruption detected at xfs_allocbt_verify+0x327/0x4a0 fs/xfs/libxfs/xfs_alloc_btree.c:329, xfs_allocbt block 0x4 #0: 00000000c8e71b95 (&type->s_umount_key#74){++++}, at: deactivate_super+0x16c/0x1a0 fs/super.c:359 #1: 000000006086df18 (&bdi->wb_switch_rwsem){+.+.}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: 000000006086df18 (&bdi->wb_switch_rwsem){+.+.}, at: sync_inodes_sb+0x180/0x9a0 fs/fs-writeback.c:2457 XFS (loop4): Unmount and run xfs_repair 2 locks held by kworker/u4:5/8809: 2 locks held by kworker/0:4/9304: XFS (loop4): First 128 bytes of corrupted metadata buffer: 4 locks held by kworker/u4:8/9530: 000000004e74d213: 07 42 54 42 00 00 00 01 ff ff ff ff ff ff ff ff .BTB............ #0: 00000000abf1926a ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 000000004cb50921: 00 00 00 42 00 00 7f be 00 00 00 42 00 00 7f be ...B.......B.... #1: 00000000b8868776 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 000000007298208b: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ #2: 0000000035c8ffb5 (sb_internal#2){.+.+}, at: sb_start_intwrite include/linux/fs.h:1626 [inline] #2: 0000000035c8ffb5 (sb_internal#2){.+.+}, at: xfs_trans_alloc+0x4fc/0x700 fs/xfs/xfs_trans.c:271 000000004a88ed6c: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ #3: 0000000018db7599 (&xfs_nondir_ilock_class){++++}, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline] #3: 0000000018db7599 (&xfs_nondir_ilock_class){++++}, at: xfs_ilock+0x2b6/0x440 fs/xfs/xfs_inode.c:199 00000000da7f7904: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 2 locks held by agetty/17869: #0: 00000000821ad5e9 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 000000005838a6bb: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ #1: 0000000026ca6172 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 00000000cebf9a67: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 000000001778dd20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ============================================= XFS (loop4): metadata I/O error in "xfs_trans_read_buf_map" at daddr 0x4 len 1 error 117 NMI backtrace for cpu 1 XFS (loop4): page discard on page 00000000890c4ff8, inode 0x2a, offset 16089088. CPU: 1 PID: 1568 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 XFS (loop4): Metadata corruption detected at xfs_allocbt_verify+0x327/0x4a0 fs/xfs/libxfs/xfs_alloc_btree.c:329, xfs_allocbt block 0x4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 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 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 XFS (loop4): Unmount and run xfs_repair 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: XFS (loop4): First 128 bytes of corrupted metadata buffer: NMI backtrace for cpu 0 CPU: 0 PID: 9304 Comm: kworker/0:4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: xfs-buf/loop4 xfs_buf_ioend_work RIP: 0010:__lock_release kernel/locking/lockdep.c:3704 [inline] RIP: 0010:lock_release+0x30c/0x8b0 kernel/locking/lockdep.c:3927 Code: 00 00 66 83 68 22 10 66 f7 40 22 f0 ff 0f 85 bd 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 8b 4c 24 08 8b 6c 24 38 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 03 0f 8e 1c 05 00 00 48 89 c1 41 89 RSP: 0018:ffff88804480f898 EFLAGS: 00000806 RAX: ffff888044802940 RBX: ffffffff8d243760 RCX: 1ffff11008900518 RDX: dffffc0000000000 RSI: ffffffff89f7ae58 RDI: ffff888044802962 RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff11008901f16 R13: ffffffff814db43c R14: ffff888044802040 R15: 0000000000000004 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f18f4004150 CR3: 0000000092e20000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_unlock+0x17/0x40 kernel/locking/spinlock.c:176 console_lock_spinning_enable kernel/printk/printk.c:1624 [inline] console_unlock+0x3ec/0x1110 kernel/printk/printk.c:2457 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 printk+0xba/0xed kernel/printk/printk.c:2040 __xfs_printk+0x66/0x8a fs/xfs/xfs_message.c:24 xfs_alert+0xe2/0x1bd fs/xfs/xfs_message.c:52 xfs_buf_verifier_error+0x21e/0x310 fs/xfs/xfs_error.c:368 xfs_allocbt_read_verify+0x118/0x380 fs/xfs/libxfs/xfs_alloc_btree.c:357 xfs_buf_ioend+0x1da/0x6e0 fs/xfs/xfs_buf.c:1202 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