panic: [ NUM.ADDR] vpanic() at netbsd:vpanic+0x282 (2)

[syzbot <syzbot+621cda8dc81fce63f53b%syzkaller.appspotmail.com@localhost>]

Hello,

syzbot found the following issue on:

HEAD commit:    3e9fb10752d0 Modify comment. Use __BIT() a little. No func..
git tree:       netbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=101a404a080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=fab579639ba4bf0a
dashboard link: https://syzkaller.appspot.com/bug?extid=621cda8dc81fce63f53b
compiler:       g++ (Debian 10.2.1-6) 10.2.1 20210110

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+621cda8dc81fce63f53b%syzkaller.appspotmail.com@localhost

 104.6606613] panic: [ 104.6906488] vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:293
[ 104.7106514] _sub_D_65535_0() at netbsd:_sub_D_65535_0+-0x34c4
[ 104.7406494] fixjobc() at netbsd:fixjobc+0x31b sys/kern/kern_proc.c:1599
[ 104.7606487] exit1() at netbsd:exit1+0x4db sys/kern/kern_exit.c:428
[ 104.7806488] sys_exit() at netbsd:sys_exit+0x92 sys/kern/kern_exit.c:180
[ 104.8106497] syscall() at netbsd:syscall+0x25a sy_call sys/sys/syscallvar.h:65 [inline]
[ 104.8106497] syscall() at netbsd:syscall+0x25a sy_invoke sys/sys/syscallvar.h:94 [inline]
[ 104.8106497] syscall() at netbsd:syscall+0x25a sys/arch/x86/x86/syscall.c:138
[ 104.8210142] --- syscall (number 1) ---
[ 104.8323070] netbsd:syscall+0x25a:
[ 104.8418699] cpu0: End traceback...
[ 104.8418699] fatal breakpoint trap in supervisor mode
[ 104.8509447] trap type 1 code 0 rip 0xffffffff80220a4d cs 0x8 rflags 0x286 cr2 0x6152a0 ilevel 0 rsp 0xffffb981a6eb0b30
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eb0650
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eb0170
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eafc90
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eaf7b0
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eaf2d0
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eaedf0
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eae910
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eae430
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eadf50
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eada70
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6ead590
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6ead0b0
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eacbd0
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eac6f0
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eac210
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0
[ 104.8615960] uvm_fault(0xffffffff83567500, 0xffff900000000000, 1) -> e
[ 104.8615960] fatal page fault in supervisor mode
[ 104.8615960] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffb981a6eabd30
[ 104.8615960] curlwp 0xffffb98012d51780 pid 7216.7216 lowest kstack 0xffffb981a6ea92c0
kernel: page fault trap, code=0


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller%googlegroups.com@localhost.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

-- 
You received this message because you are subscribed to the Google Groups "syzkaller-netbsd-bugs" group.
To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-netbsd-bugs+unsubscribe%googlegroups.com@localhost.
To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-netbsd-bugs/000000000000093c8605e43c8958%40google.com.