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page fault in breakpoint (2)


syzbot found the following issue on:

HEAD commit:    23ee83f7c0ae c.7: mention that C11 and C17 have been publi..
git tree:       netbsd
console output:
kernel config:
dashboard link:
compiler:       g++ (Debian 12.2.0-14) 12.2.0

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

Downloadable assets:
disk image:

IMPORTANT: if you fix the issue, please add the following tag to the commit:

[ 499.9698451] fatal page fault in supervisor mode
[ 499.9698451] trap type 6 code 0x2 rip 0xffffffff802006a0 cs 0x8 rflags 0x10002 cr2 0x1 ilevel 0 rsp 0xffffda024875d798
[ 499.9698451] curlwp 0xffffda0013fba4c0 pid 3459.3459 lowest kstack 0xffffda02487562c0
k[e 4r9ne9l.9: 6p98ag4e51 f]a uflatt atl rdaopu, blceo defa=0u[
 S4t99op.p96e9d8 4i5n1 ]p idl t 34in5 9.su3p45er9v (issyorz -emxoedceu
ttorr.a1p )t aytpe 13 code 0 rip 0xffffffff8020100b cs 0x8 rflags 0x10086 cr2 0xffffda02486f1fb8 ilevel 0 rsp 0xffffda02486f1fc0
[ 499.9698451] curlwp 0xffffda0013444b80   p i dn 3et4b73s.d:12X3i6nt5r l_ohywpeesrtv _khstypacekr ca0xlflf+0fxfada00: 24 8  6 fa0d2dc0b  
    % a l , 0 (  %r  a x )  
rnel: double fault trap, code=0
Faulted in DDB; continuing...
db{1}> Xintr_hyperv_hypercall() at netbsd:Xintr_hyperv_hypercall+0xa0
--- interrupt ---
?() at ffffda024875da30
[ 499.9698451] panic: stack overflow detected; terminated
[ 499.9698451] cpu0: Begin traceback...
[ 499.9698451] vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:292
[ 499.9698451] panic() at netbsd:panic+0x9e sys/kern/subr_prf.c:1088
[ 499.9698451] __stack_chk_fail() at netbsd:__stack_chk_fail+0x1c sys/kern/kern_ssp.c:59
[ 499.9698451] db_stack_trace_print() at netbsd:db_stack_trace_print+0x1266
[ 499.9698451] ?() at 0
[ 499.9698451] cpu0: End traceback...
[ 499.9698451] fatal breakpoint trap in supervisor mode
[ 499.9698451] trap type 1 code 0 rip 0xffffffff8023241d cs 0x8 rflags 0x286 cr2 0x1 ilevel 0x8 rsp 0xffffda024875c400
[ 499.9698451] curlwp 0xffffda0013fba4c0 pid 3459.3459 lowest kstack 0xffffda02487562c0
Stopped in pid 3459.3459 (syz-executor.1) at    netbsd:breakpoint+0x5:  leave

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