[ 432.5981238] panic: kernel diagnostic assertion "ks->ks_pshared_proc == NULL" failed: file "/syzkaller/managers/ci2-netbsd/kernel/sys/kern/uipc_sem.c", line 501 
[ 432.7848457] cpu0: Begin traceback...
[ 432.8979882] vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:293
[ 433.3779644] _sub_D_65535_0() at netbsd:_sub_D_65535_0+-0x34c4
[ 433.7679451] ksem_free() at netbsd:ksem_free+0x25b sys/kern/uipc_sem.c:501
[ 434.1479312] do_ksem_init() at netbsd:do_ksem_init+0x30b sys/kern/uipc_sem.c:613
[ 434.5179194] sys___syscall() at netbsd:sys___syscall+0x10e sy_call sys/sys/syscallvar.h:65 [inline]
[ 434.5179194] sys___syscall() at netbsd:sys___syscall+0x10e sys/kern/sys_syscall.c:90
[ 434.9179071] syscall() at netbsd:syscall+0x25a sy_call sys/sys/syscallvar.h:65 [inline]
[ 434.9179071] syscall() at netbsd:syscall+0x25a sy_invoke sys/sys/syscallvar.h:94 [inline]
[ 434.9179071] syscall() at netbsd:syscall+0x25a sys/arch/x86/x86/syscall.c:138
[ 435.0400513] --- syscall (number 247 via SYS_syscall) ---
[ 435.1979227] netbsd:syscall+0x25a:
[ 435.2402735] cpu0: End traceback...
[ 435.2870826] fatal breakpoint trap in supervisor mode
[ 435.3516601] trap type 1 code 0 rip 0xffffffff80220a4d cs 0x8 rflags 0x286 cr2 0x20000040 ilevel 0 rsp 0xffffd1819db5bb60
[ 435.4909182] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db5b680
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db5b1a0
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db5acc0
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db5a7e0
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db5a300
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db59e20
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db59940
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db59460
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db58f80
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db58aa0
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db585c0
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db580e0
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db57c00
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db57720
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db57240
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e
[ 435.5921123] fatal page fault in supervisor mode
[ 435.5921123] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffd1819db56d60
[ 435.5921123] curlwp 0xffffd180133e1480 pid 1335.1490 lowest kstack 0xffffd1819db542c0
kernel: page fault trap, code=0
[ 435.5921123] uvm_fault(0xffffd18012cfb5f0, 0xffff900000000000, 1) -> e