syzbot has found a reproducer for the following crash on:
HEAD commit: af876e934dda Register kUBSan and KCOV in kernel=GENERIC of..
git tree: netbsd
console output:
https://syzkaller.appspot.com/x/log.txt?x=1384ada2c00000
dashboard link:
https://syzkaller.appspot.com/bug?extid=e8aa26ad551c649227b4
syz repro:
https://syzkaller.appspot.com/x/repro.syz?x=1781bd82c00000
C reproducer:
https://syzkaller.appspot.com/x/repro.c?x=1031b3a2c00000
login: [ 44.2636544] panic: receive 3
[ 44.2636544] cpu0: Begin traceback...
[ 44.2636544] vpanic() at netbsd:vpanic+0x214
[ 44.2636544] snprintf() at netbsd:snprintf
[ 44.2761543] soreceive() at netbsd:soreceive+0x1d63
[ 44.2761543] do_sys_recvmsg_so() at netbsd:do_sys_recvmsg_so+0x31f
[ 44.2886798] do_sys_recvmsg() at netbsd:do_sys_recvmsg+0xaf
[ 44.2886798] sys_recvmsg() at netbsd:sys_recvmsg+0x123
[ 44.3032903] sys_syscall() at netbsd:sys_syscall+0xe2
[ 44.3141474] syscall() at netbsd:syscall+0x30e
[ 44.3274590] --- syscall (number 0) ---
[ 44.3274590] 7f64b023f4ca:
[ 44.3274590] cpu0: End traceback...
[ 44.3421045] dumping to dev 4,1 (offset=0, size=0): not possible
[ 44.3421045] rebooting...
SeaBIOS (version 1.8.2-20181029_212248-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 0x000f2a00: 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
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open /var/db/entropy-file
WARNING: 1 module failed to load