XFS (loop0): Filesystem has a realtime volume, use rtdev=device option
XFS (loop0): RT mount failed
XFS (loop0): Filesystem has a realtime volume, use rtdev=device option
XFS (loop0): RT mount failed
INFO: task syz-executor.4:24206 blocked for more than 140 seconds.
Not tainted 4.19.120-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4 D26800 24206 6791 0x00000004
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3559
xlog_grant_head_wait+0x150/0xce0 fs/xfs/xfs_log.c:263
xlog_grant_head_check+0x3b9/0x410 fs/xfs/xfs_log.c:325
xfs_log_reserve+0x344/0xa80 fs/xfs/xfs_log.c:454
xfs_log_write_unmount_record fs/xfs/xfs_log.c:854 [inline]
xfs_log_unmount_write fs/xfs/xfs_log.c:953 [inline]
xfs_log_quiesce+0x3e5/0xc00 fs/xfs/xfs_log.c:1020
xfs_log_unmount+0x1d/0xb0 fs/xfs/xfs_log.c:1034
xfs_log_mount_cancel+0x40/0x50 fs/xfs/xfs_log.c:816
xfs_mountfs+0x12ce/0x1bd0 fs/xfs/xfs_mount.c:1064
xfs_fs_fill_super+0xd0e/0x1530 fs/xfs/xfs_super.c:1720
mount_bdev+0x305/0x3c0 fs/super.c:1158
mount_fs+0xa3/0x30c fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x400 fs/namespace.c:961
vfs_kern_mount fs/namespace.c:951 [inline]
do_new_mount fs/namespace.c:2469 [inline]
do_mount+0x4f4/0x2a40 fs/namespace.c:2799
ksys_mount+0xd7/0x150 fs/namespace.c:3015
__do_sys_mount fs/namespace.c:3029 [inline]
__se_sys_mount fs/namespace.c:3026 [inline]
__x64_sys_mount+0xba/0x150 fs/namespace.c:3026
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45f27a
Code: Bad RIP value.
RSP: 002b:00007ff981f09a68 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00000000005087c0 RCX: 000000000045f27a
RDX: 00007ff981f09ae0 RSI: 0000000020000140 RDI: 00007ff981f09b00
RBP: 000000000078bf00 R08: 00007ff981f09b40 R09: 00007ff981f09ae0
R10: 0000000000000000 R11: 0000000000000206 R12: 00000000ffffffff
R13: 0000000000000bf2 R14: 00000000004ce170 R15: 00007ff981f0a6d4
Showing all locks held in the system:
1 lock held by khungtaskd/1079:
#0: 00000000e91c396b (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440
1 lock held by in:imklog/6134:
#0: 00000000c32831de (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 fs/file.c:767
2 locks held by kworker/u4:0/5646:
#0: 00000000c15e119b (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:9688 [inline]
#0: 00000000c15e119b (&rq->lock){-.-.}, at: pick_next_task_fair+0xdbc/0x1420 kernel/sched/fair.c:6840
#1: 00000000e91c396b (rcu_read_lock){....}, at: __update_idle_core+0x42/0x3f0 kernel/sched/fair.c:6057
1 lock held by syz-executor.4/24206:
#0: 0000000065140c90 (&type->s_umount_key#60/1){+.+.}, at: alloc_super fs/super.c:226 [inline]
#0: 0000000065140c90 (&type->s_umount_key#60/1){+.+.}, at: sget_userns+0x1fc/0xcd0 fs/super.c:519
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1079 Comm: khungtaskd Not tainted 4.19.120-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+0x188/0x20d lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1eb 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+0x962/0xe40 kernel/hung_task.c:287
kthread+0x34a/0x420 kernel/kthread.c:246
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: 3690 Comm: systemd-journal Not tainted 4.19.120-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0033:0x7ff547b060d9
Code: 90 55 53 48 83 ec 28 48 85 ff 0f 84 b1 00 00 00 4d 85 c9 0f 84 c8 00 00 00 4d 85 c0 0f 84 df 00 00 00 49 8d 2c 08 48 3b 6f 60 <48> 89 fb 77 42 8d 7e ff 48 8d 43 30 83 ff 07 bf 00 00 00 00 0f 43
RSP: 002b:00007fff8f3e9130 EFLAGS: 00000283
RAX: 00007ff547e22000 RBX: 000000000012a3b8 RCX: 000000000012a3b8
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 000055c42f0eaea0
RBP: 000000000012a3c8 R08: 0000000000000010 R09: 00007fff8f3e9170
R10: 2a36a66c1690163b R11: b704a2a2e80f45e1 R12: 000055c42f0eaea0
R13: 00007fff8f3e91e8 R14: 0000000000000006 R15: 00007fff8f3e9170
FS: 00007ff547e178c0 GS: 0000000000000000