lock error in [ 81.ADDR] do_sys

Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported
lock error in do_sys_accept	syz			9	2013d	2021d

syz

2013d

2021d

duplicates (14):
Title	Repro	Count	Last	Reported	Patched	Status
lock error in [ 694.ADDR] do_sys_accept		1	2054d	2054d	0/3	closed as dup on 2019/04/08 18:42
lock error in [ 1740.ADDR] do_sys_accept	syz	1	2030d	2030d	0/3	closed as dup on 2019/05/02 19:10
lock error in [ 157.ADDR] do_sys_accept		1	2032d	2032d	0/3	closed as dup on 2019/05/02 19:11
lock error in [ 559.ADDR] do_sys_accept		1	2030d	2030d	0/3	closed as dup on 2019/05/02 19:10
lock error in [ 111.ADDR] do_sys_accept		1	2059d	2059d	0/3	closed as dup on 2019/04/08 18:42
lock error in [ 500.ADDR] do_sys_accept		1	2077d	2077d	0/3	closed as dup on 2019/04/01 19:24
lock error in [ 42.ADDR] do_sys_accept	C	1	2032d	2032d	0/3	closed as dup on 2019/05/02 19:10
lock error in [ 2026.ADDR] do_sys_accept	syz	1	2059d	2059d	0/3	closed as dup on 2019/04/08 18:43
lock error in [ 1550.ADDR] do_sys_accept		1	2033d	2033d	0/3	closed as dup on 2019/05/02 19:08
lock error in [ 919.ADDR] do_sys_accept		1	2051d	2051d	0/3	closed as dup on 2019/04/14 06:45
lock error in [ 1862.ADDR] do_sys_accept		1	2061d	2061d	0/3	closed as dup on 2019/04/01 19:26
lock error in [ 532.ADDR] do_sys_accept	syz	1	2033d	2033d	0/3	closed as dup on 2019/05/02 19:09
lock error in [ 2850.ADDR] do_sys_accept		1	2032d	2032d	0/3	closed as dup on 2019/05/02 19:09
lock error in [ 672.ADDR] do_sys_accept		1	2067d	2067d	0/3	closed as dup on 2019/04/01 19:25

[ 81.8659842] panic: lock error: Mutex: mutex_vector_exit,761: assertion failed: MUTEX_OWNER(mtx->mtx_owner) == curthread: lock 0xffffa9801315cb80 cpu 0 lwp 0xffffa980131825a0 [ 81.8825605] cpu0: Begin traceback... [ 81.8862919] vpanic() at netbsd:vpanic+0x214 [ 81.8939327] snprintf() at netbsd:snprintf [ 81.9039545] lockdebug_abort() at netbsd:lockdebug_abort+0x14c [ 81.9140246] mutex_vector_exit() at netbsd:mutex_vector_exit+0x1bc [ 81.9256840] do_sys_accept() at netbsd:do_sys_accept+0x346 [ 81.9340066] sys_accept() at netbsd:sys_accept+0xac [ 81.9443023] sys___syscall() at netbsd:sys___syscall+0xe2 [ 81.9640696] syscall() at netbsd:syscall+0x32e [ 81.9640696] --- syscall (number 198) --- [ 81.9750778] 70221603f4aa: [ 81.9750778] cpu0: End traceback... [ 81.9750778] dumping to dev 4,1 (offset=0, size=0): not possible [ 81.9750778] rebooting... SeaBIOS (version 1.8.2-20190122_225043-google) Total RAM Size = 0x00000001e0000000 = 7680 MiB CPUs found: 2 Max CPUs supported: 2 found virtio-scsi at 0:3 virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0 virtio-scsi blksize=512 sectors=4194304 = 2048 MiB drive 0x000f29c0: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304 Booting from Hard Disk 0... >> NetBSD/x86 BIOS Boot, Revision 5.10 (Tue Jul 17 14:59:51 UTC 2018) (from NetBSD 8.0) >> Memory: 639/3144640 k 1. Boot normally 2. Boot single user 3. Disable ACPI 4. Disable ACPI and SMP 5. Drop to boot prompt