uvm_fault(0xfffffd807eff3528, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at rw_enter+0x172: movq 0(%rax),%r15 TID PID UID PRFLAGS PFLAGS CPU COMMAND *405385 54563 0 0x1a000002 0x4000000 0K syz-fuzzer 161904 35677 0 0x14000 0x200 1 softnet0 rw_enter(0,1) at rw_enter+0x172 sys/kern/kern_rwlock.c:253 uvm_vnp_uncache(fffffd80740cd3b8) at uvm_vnp_uncache+0x3f sys/uvm/uvm_vnode.c:1373 dounlinkat(ffff80002a148f68,ffffff9c,c000599680,0) at dounlinkat+0xf6 sys/kern/vfs_syscalls.c:1891 syscall(ffff80002a1f23e0) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002a1f23e0) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2725ff1e0, count: 10 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.