watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor7:26136]
Modules linked in:
CPU: 0 PID: 26136 Comm: syz-executor7 Not tainted 4.18.0-rc5+ #29
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+0x357/0x500 kernel/smp.c:302
Code: 85 93 00 00 00 e8 89 c5 12 00 e9 be 00 00 00 8b 3a e8 fd 79 6e 00 45 85 f6 74 91 41 89 de eb 08 0f 1f 00 e8 6b c5 12 00 f3 90 <8b> 5c 24 58 4c 89 e7 e8 bd 6f 6e 00 8b 00 83 e0 01 83 e3 01 85 c0 
RSP: 0018:ffff8800af08f920 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffffffff81555f95 RBX: 0000000000000001 RCX: ffff88009ec30000
RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea00041a35a0
RBP: ffff8800af08f9f0 R08: 0000000000000000 R09: 0000000000000002
R10: ffffffff7fffffff R11: ffffffff8117d090 R12: ffff8800af08f978
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88009ec30900
FS:  0000000001683940(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020e5c000 CR3: 00000000af118000 CR4: 00000000001406f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000020000000
DR3: 0000000020000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 _rcu_barrier+0x4a7/0x790 kernel/rcu/tree.c:3434
 rcu_barrier_sched kernel/rcu/tree.c:3474 [inline]
 rcu_barrier+0x1c/0x20 kernel/rcu/tree_plugin.h:933
 netdev_run_todo+0x189/0x1570 net/core/dev.c:8227
 rtnl_unlock+0x13/0x20 net/core/rtnetlink.c:117
 tun_detach drivers/net/tun.c:747 [inline]
 tun_chr_close+0x18c/0x1c0 drivers/net/tun.c:3271
 __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
 tracehook_notify_resume include/linux/tracehook.h:192 [inline]
 exit_to_usermode_loop arch/x86/entry/common.c:166 [inline]
 prepare_exit_to_usermode+0x35d/0x430 arch/x86/entry/common.c:197
 syscall_return_slowpath+0x108/0x800 arch/x86/entry/common.c:268
 do_syscall_64+0x1ad/0x230 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x40fb91
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 
RSP: 002b:0000000000a3eab0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000016 RCX: 000000000040fb91
RDX: 0000000000000000 RSI: 0000000000730458 RDI: 0000000000000015
RBP: 0000000000000013 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000a3e930 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000a3f160 R15: 00000000007034c0
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: 26147 Comm: syz-executor1 Not tainted 4.18.0-rc5+ #29
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: 0000000080000000 RBX: 0000000000000001 RCX: 00000000c0000101
RDX: 00000000ffff8802 RSI: ffffffff8a40136c RDI: 00000000000006c0
RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000117bbe000 R15: 0000000000000000
FS:  00007feb18b02700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33321000 CR3: 0000000117bbe000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 28fa90b707539a3d ]---
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: 0000000080000000 RBX: 0000000000000001 RCX: 00000000c0000101
RDX: 00000000ffff8802 RSI: ffffffff8a40136c RDI: 00000000000006c0
RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000117bbe000 R15: 0000000000000000
FS:  00007feb18b02700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33321000 CR3: 0000000117bbe000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600