00000050: 00 00 00 01 00 00 10 00 00 00 00 01 00 00 00 00 ................ 00000060: 00 00 06 c0 b4 a4 02 00 01 00 00 10 00 00 00 00 ................ XFS (loop0): SB validate failed with error -117. 00000070: 00 00 00 00 00 00 00 00 0c 09 00 00 00 00 00 00 ................ XFS (loop2): SB validate failed with error -117. INFO: task syz-executor3:1914 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #35 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D22632 1914 11617 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 xlog_grant_head_wait+0x24e/0x1120 fs/xfs/xfs_log.c:263 xlog_grant_head_check+0x4cb/0x540 fs/xfs/xfs_log.c:325 xfs_log_reserve+0x399/0xd40 fs/xfs/xfs_log.c:454 xfs_log_write_unmount_record+0x311/0xc00 fs/xfs/xfs_log.c:854 xfs_log_unmount_write fs/xfs/xfs_log.c:953 [inline] xfs_log_quiesce+0x579/0x670 fs/xfs/xfs_log.c:1020 xfs_log_unmount+0x22/0xb0 fs/xfs/xfs_log.c:1034 xfs_log_mount_cancel+0x47/0x60 fs/xfs/xfs_log.c:816 xfs_mountfs+0x1657/0x2190 fs/xfs/xfs_mount.c:1068 xfs_fs_fill_super+0xe36/0x1710 fs/xfs/xfs_super.c:1746 mount_bdev+0x307/0x3c0 fs/super.c:1159 xfs_fs_mount+0x35/0x40 fs/xfs/xfs_super.c:1820 mount_fs+0x123/0x43a fs/super.c:1258 vfs_kern_mount.part.0+0xdb/0x570 fs/namespace.c:959 vfs_kern_mount fs/namespace.c:949 [inline] do_new_mount fs/namespace.c:2513 [inline] do_mount+0x58e/0x3330 fs/namespace.c:2847 ksys_mount+0xdb/0x150 fs/namespace.c:3063 __do_sys_mount fs/namespace.c:3077 [inline] __se_sys_mount fs/namespace.c:3074 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3074 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45ab0a Code: de fa ff ff 0f 84 90 00 00 00 48 8d 84 24 70 03 00 00 48 29 f0 48 3d f8 02 04 00 76 7d 48 81 ec 08 00 04 00 48 89 ac 24 00 00 <04> 00 48 8d ac 24 00 00 04 00 48 8b 59 20 48 85 db 75 67 48 8b b4 RSP: 002b:00007f5592e04a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f5592e04b30 RCX: 000000000045ab0a RDX: 00007f5592e04ad0 RSI: 0000000020000100 RDI: 00007f5592e04af0 RBP: 0000000020000100 R08: 00007f5592e04b30 R09: 00007f5592e04ad0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004 R13: 0000000000000000 R14: 00000000004dbc68 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1041: #0: 00000000d1e9db0f (rcu_read_lock){....}, at: debug_show_all_locks+0xc6/0x41d kernel/locking/lockdep.c:4389 1 lock held by rsyslogd/7674: 2 locks held by getty/7764: #0: 000000002637ca0a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000000df933a0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7765: #0: 00000000f0eb5441 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000bbc5ab30 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7766: #0: 00000000a6e340e6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000025bd2543 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7767: #0: 0000000033b4ddf4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000c872ecf3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7768: #0: 00000000c48eeef1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000001c755f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7769: #0: 000000007fdf22b6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000000f0e949f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7770: #0: 00000000203529e1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000069220cf6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 1 lock held by syz-executor3/1914: #0: 000000000897a107 (&type->s_umount_key#54/1){+.+.}, at: alloc_super fs/super.c:227 [inline] #0: 000000000897a107 (&type->s_umount_key#54/1){+.+.}, at: sget_userns+0x2db/0xf50 fs/super.c:520 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1041 Comm: khungtaskd Not tainted 5.0.0-rc2+ #35 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+0x1db/0x2d0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0xbbb/0x1170 kernel/hung_task.c:287 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 93 Comm: kworker/u4:3 Not tainted 5.0.0-rc2+ #35 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:mark_lock+0x7f/0x1cd0 kernel/locking/lockdep.c:3029 Code: ff ff ff 30 77 38 89 48 8d 04 13 48 c7 85 68 ff ff ff b0 c2 63 81 c7 00 f1 f1 f1 f1 c7 40 04 04 f2 04 f2 c7 40 08 04 f3 f3 f3 <65> 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 4c 89 c8 48 c1 e8 03 RSP: 0018:ffff8880a9047428 EFLAGS: 00000086 RAX: ffffed1015208e8b RBX: 1ffff11015208e8b RCX: 0000000000000008 RDX: dffffc0000000000 RSI: ffff8880a9032ad0 RDI: ffff8880a9032200 RBP: ffff8880a9047500 R08: 0000000000000008 R09: ffff8880a9032af0 R10: ffff8880a9032200 R11: ffffffff899a3f40 R12: ffff8880a9032ad0 R13: 000000000002002b R14: 0000000000000100 R15: ffff8880a90474d8 FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c431952f40 CR3: 0000000095f2b000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __lock_acquire+0x572/0x4a30 kernel/locking/lockdep.c:3299 lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 rcu_lock_acquire include/linux/rcupdate.h:223 [inline] rcu_read_lock include/linux/rcupdate.h:607 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:419 [inline] batadv_nc_worker+0x19b/0x920 net/batman-adv/network-coding.c:730 process_one_work+0xd0c/0x1ce0 kernel/workqueue.c:2153 worker_thread+0x143/0x14a0 kernel/workqueue.c:2296 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352