syzbot has found a reproducer for the following crash on:
HEAD commit: 871d2730 print little-endian header fields correctly.
git tree: netbsd
console output:
https://syzkaller.appspot.com/x/log.txt?x=1359e76f200000
syz repro:
https://syzkaller.appspot.com/x/repro.syz?x=143d476f200000
[ 816.4748921] panic: kernel diagnostic assertion "!ff->ff_exclose" failed:
file "/syzkaller/managers/netbsd/kernel/sys/kern/kern_descrip.c", line 1571
[ 816.4748921] cpu0: Begin traceback...
[ 816.4849001] vpanic() at netbsd:vpanic+0x214
[ 816.4849001] _GLOBAL__sub_D_65535_0_cpu_configure() at
netbsd:_GLOBAL__sub_D_65535_0_cpu_configure
[ 816.5049115] fd_free() at netbsd:fd_free+0x2f6
[ 816.5049115] exit1() at netbsd:exit1+0x299
[ 816.5153736] sys_exit() at netbsd:sys_exit+0x6c
[ 816.5249415] syscall() at netbsd:syscall+0x32e
[ 816.5355353] --- syscall (number 1) ---
[
816.5355353] 7e31ac0fe47a:
[ 816.5355353] cpu0: End traceback...
[ 816.5486976] dumping to dev 4,1 (offset=0, size=0): not possible
[ 816.5486976] 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
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