INFO: task syz-executor.4:10489 blocked for more than 143 seconds.
      Not tainted 5.10.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:26128 pid:10489 ppid:  8505 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3774 [inline]
 __schedule+0x893/0x2130 kernel/sched/core.c:4523
 schedule+0xcf/0x270 kernel/sched/core.c:4601
 schedule_timeout+0x148/0x250 kernel/time/timer.c:1876
 gfs2_gl_hash_clear+0x240/0x270 fs/gfs2/glock.c:1989
 gfs2_fill_super+0x1e81/0x23f0 fs/gfs2/ops_fstype.c:1233
 get_tree_bdev+0x421/0x740 fs/super.c:1344
 gfs2_get_tree+0x4a/0x270 fs/gfs2/ops_fstype.c:1256
 vfs_get_tree+0x89/0x2f0 fs/super.c:1549
 do_new_mount fs/namespace.c:2875 [inline]
 path_mount+0x13ad/0x20c0 fs/namespace.c:3205
 do_mount fs/namespace.c:3218 [inline]
 __do_sys_mount fs/namespace.c:3426 [inline]
 __se_sys_mount fs/namespace.c:3403 [inline]
 __x64_sys_mount+0x27f/0x300 fs/namespace.c:3403
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x46089a
Code: Unable to access opcode bytes at RIP 0x460870.
RSP: 002b:00007f1106f57a88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1106f57b20 RCX: 000000000046089a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f1106f57ae0
RBP: 00007f1106f57ae0 R08: 00007f1106f57b20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020047a20

Showing all locks held in the system:
1 lock held by khungtaskd/1644:
 #0: ffffffff8b336f60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6259
1 lock held by syz-executor.4/10489:
 #0: ffff888020f220e0 (&type->s_umount_key#64/1){+.+.}-{3:3}, at: alloc_super+0x1b8/0xa80 fs/super.c:229

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 1644 Comm: khungtaskd Not tainted 5.10.0-rc1-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+0x107/0x163 lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline]
 watchdog+0xd43/0xfa0 kernel/hung_task.c:295
 kthread+0x3af/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8165 Comm: rs:main Q:Reg Not tainted 5.10.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data+0xa/0x80 kernel/kcov.c:217
Code: 65 48 8b 04 25 00 f0 01 00 48 8b 80 48 14 00 00 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 49 89 f2 65 8b 05 76 ef 91 7e <65> 48 8b 34 25 00 f0 01 00 a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b
RSP: 0018:ffffc9000b1d7e20 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 00000000000003f4 RCX: ffffffff81bb709a
RDX: 0000000000049139 RSI: 0000000000000000 RDI: 0000000000000007
RBP: ffff888013e4f540 R08: 0000000000000000 R09: ffff888013e4f5cf
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000049139
R13: 0000000000000001 R14: ffff888013e4f5c4 R15: 00000000000003f4
FS:  00007fd23da0e700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f654bdcc000 CR3: 000000001ee4e000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rw_verify_area+0x6a/0x350 fs/read_write.c:382
 vfs_write+0x177/0x700 fs/read_write.c:596
 ksys_write+0x12d/0x250 fs/read_write.c:658
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fd2404521cd
Code: c2 20 00 00 75 10 b8 01 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ae fc ff ff 48 89 04 24 b8 01 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 f7 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007fd23da0d590 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fd234009c20 RCX: 00007fd2404521cd
RDX: 00000000000003f4 RSI: 00007fd234009c20 RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fd234009980
R13: 00007fd23da0d5b0 R14: 0000559ac3c55440 R15: 00000000000003f4