syz-executor4 (6809) used greatest stack depth: 52664 bytes left
watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor4:6776]
Modules linked in:
CPU: 0 PID: 6776 Comm: syz-executor4 Not tainted 4.18.0-rc8+ #34
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rep_nop arch/x86/include/asm/processor.h:658 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:663 [inline]
RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline]
RIP: 0010:smp_call_function_single+0x367/0x4e0 kernel/smp.c:302
Code: fe ff ff 8b 3a e8 59 8e 6b 00 45 85 f6 0f 84 6d ff ff ff 41 89 de eb 10 90 66 2e 0f 1f 84 00 00 00 00 00 e8 3b 32 12 00 f3 90 <8b> 5c 24 78 4c 89 e7 e8 bd 84 6b 00 8b 00 83 e0 01 83 e3 01 85 c0 
RSP: 0018:ffff88012f14f440 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffffffff81535185 RBX: 0000000000000001 RCX: 0000000000040000
RDX: ffffc90001e96000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffff88012f14f510 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff81174df0 R12: ffff88012f14f4b8
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88013006a678
FS:  00007fe6b5924700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe5758c6000 CR3: 00000001a5118000 CR4: 00000000001406f0
Call Trace:
 smp_call_function_many+0x658/0xdb0 kernel/smp.c:434
 on_each_cpu_mask kernel/smp.c:632 [inline]
 on_each_cpu_cond+0x322/0x3f0 kernel/smp.c:684
 invalidate_bh_lrus+0x54/0x60 fs/buffer.c:1392
 kill_bdev fs/block_dev.c:85 [inline]
 __blkdev_put+0x3bf/0xcb0 fs/block_dev.c:1788
 blkdev_put+0x431/0x560 fs/block_dev.c:1856
 blkdev_close+0xa6/0xf0 fs/block_dev.c:1863
 __fput+0x458/0xa30 fs/file_table.c:209
 ____fput+0x37/0x40 fs/file_table.c:243
 task_work_run+0x22e/0x2b0 kernel/task_work.c:113
 get_signal+0x1d3d/0x1ef0 kernel/signal.c:2298
 do_signal+0x120/0x2090 arch/x86/kernel/signal.c:816
 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline]
 prepare_exit_to_usermode+0x273/0x410 arch/x86/entry/common.c:197
 syscall_return_slowpath+0xdb/0x700 arch/x86/entry/common.c:268
 do_syscall_64+0x1ab/0x220 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457089
Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007fe6b5923c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: 0000000000010000 RBX: 00007fe6b59246d4 RCX: 0000000000457089
RDX: 00000000200ddff8 RSI: 0000000000000006 RDI: 0000000000000004
RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000102000002 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d3d80 R14: 00000000004c87e4 R15: 0000000000000000
Sending NMI from CPU 0 to CPUs 1:
------------[ cut here ]------------
kernel BUG at mm/kmsan/kmsan_entry.c:81!
invalid opcode: 0000 [#1] SMP PTI
CPU: 1 PID: 6769 Comm: syz-executor1 Not tainted 4.18.0-rc8+ #34
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kmsan_nmi_enter+0x42/0x70 mm/kmsan/kmsan_entry.c:80
Code: 00 74 27 65 8b 04 25 80 90 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 80 90 03 00 65 c6 04 25 15 6e 0b 00 ff c3 0f 0b 90 eb fe <0f> 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 0f 0b 66 90 66 2e 
RSP: 0018:fffffe0000049ea8 EFLAGS: 00010046
RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101
RDX: 00000000ffff8802 RSI: ffffffff88c0136c RDI: 00000000000004c0
RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 000000012f7fc000 R15: 0000000000000000
FS:  00007f1f87180700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000013b4e80 CR3: 000000012f7fc000 CR4: 00000000001406e0
Call Trace:
 <NMI>
 </NMI>
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 6a92ba628b96fe72 ]---
RIP: 0010:kmsan_nmi_enter+0x42/0x70 mm/kmsan/kmsan_entry.c:80
Code: 00 74 27 65 8b 04 25 80 90 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 80 90 03 00 65 c6 04 25 15 6e 0b 00 ff c3 0f 0b 90 eb fe <0f> 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 0f 0b 66 90 66 2e 
RSP: 0018:fffffe0000049ea8 EFLAGS: 00010046
RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101
RDX: 00000000ffff8802 RSI: ffffffff88c0136c RDI: 00000000000004c0
RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 000000012f7fc000 R15: 0000000000000000
FS:  00007f1f87180700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000013b4e80 CR3: 000000012f7fc000 CR4: 00000000001406e0