000000003cb0234c: 05 00 60 66 69 6c 65 32 01 00 00 00 27 05 00 78 ..`file2....'..x 0000000002e70175: 66 69 6c 65 33 01 00 00 00 27 09 00 90 66 69 6c file3....'...fil 00000000ec08aa68: 65 2e 63 6f 6c 64 01 00 00 00 28 e.cold....( XFS (loop2): Failed to read root inode 0x20, error 117 INFO: task syz-executor.5:15720 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.5 D26136 15720 8146 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+0x563/0x730 fs/xfs/xfs_qm.c:1548 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 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x310 fs/super.c:1261 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 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __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 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f5df83fd62a Code: Bad RIP value. RSP: 002b:00007f5df696df88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000000baed RCX: 00007f5df83fd62a RDX: 000000002000bb00 RSI: 000000002000bb40 RDI: 00007f5df696dfe0 RBP: 00007f5df696e020 R08: 00007f5df696e020 R09: 000000000200c400 R10: 000000000200c400 R11: 0000000000000202 R12: 000000002000bb00 R13: 000000002000bb40 R14: 00007f5df696dfe0 R15: 0000000020002a40 Showing all locks held in the system: 1 lock held by khungtaskd/1571: #0: 000000008a3e15f1 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7799: #0: 00000000d2a9fbc5 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 2 locks held by agetty/8028: #0: 00000000e5dc8a8a (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 0000000000e23cfd (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. 2 locks held by kworker/1:3/9322: #0: 000000001bd48699 ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000000c8beed6 ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 3 locks held by kworker/u4:7/9509: #0: 00000000e63e4505 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline] #0: 00000000e63e4505 (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 #1: 000000007295f6b7 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000008a3e15f1 (rcu_read_lock){....}, at: batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:417 [inline] #2: 000000008a3e15f1 (rcu_read_lock){....}, at: batadv_nc_worker+0xf3/0xd50 net/batman-adv/network-coding.c:730 2 locks held by syz-executor.5/15720: #0: 000000000e653b93 (&type->s_umount_key#47/1){+.+.}, at: alloc_super fs/super.c:226 [inline] #0: 000000000e653b93 (&type->s_umount_key#47/1){+.+.}, at: sget_userns+0x20b/0xcd0 fs/super.c:519 #1: 000000008ceee747 (sb_internal#2){.+.+}, at: sb_start_intwrite include/linux/fs.h:1626 [inline] #1: 000000008ceee747 (sb_internal#2){.+.+}, at: xfs_trans_alloc+0x4fc/0x700 fs/xfs/xfs_trans.c:271 2 locks held by syz-executor.0/20962: #0: 0000000028c6fd26 (&sb->s_type->i_mutex_key#13){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 0000000028c6fd26 (&sb->s_type->i_mutex_key#13){+.+.}, at: __sock_release+0x86/0x2a0 net/socket.c:598 #1: 000000007c916ee4 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #1: 000000007c916ee4 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 2 locks held by syz-executor.4/21041: #0: 00000000b5bdb32c (sk_lock-AF_PACKET){+.+.}, at: lock_sock include/net/sock.h:1512 [inline] #0: 00000000b5bdb32c (sk_lock-AF_PACKET){+.+.}, at: packet_setsockopt+0x3fc/0x2cc0 net/packet/af_packet.c:3704 #1: 000000007c916ee4 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #1: 000000007c916ee4 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x256/0x6f0 kernel/rcu/tree_exp.h:667 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 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 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 9509 Comm: kworker/u4:7 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Workqueue: bat_events batadv_tt_purge RIP: 0010:__lock_acquire+0x1fc/0x3ff0 kernel/locking/lockdep.c:3295 Code: 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 80 3c 02 00 0f 85 b3 2a 00 00 49 81 3e 20 f2 66 8c <0f> 84 65 ff ff ff 83 fe 01 0f 87 68 ff ff ff 48 ba 00 00 00 00 00 RSP: 0018:ffff888050007a70 EFLAGS: 00000006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 1ffff11009af0e58 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880508e6540 R14: ffff88804d7872c0 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f29bae00000 CR3: 000000009ebac000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:168 spin_lock_bh include/linux/spinlock.h:334 [inline] batadv_tt_global_purge net/batman-adv/translation-table.c:2521 [inline] batadv_tt_purge+0x123/0xa00 net/batman-adv/translation-table.c:3812 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