"`V6v/xeYQ?j#z5=D_wSul+,As$^P='qƹ&zLvamovQ"`V6v/xeYQ?j#z5=D_wSul+,As$^P='qƹ&zLvamovQwitness: userret: returning with the following locks held: exclusive rrwlock inode r = 0 (0xfffffd80649fa5f8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x46d sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602 #4 vn_read+0xa9 vn_lock sys/kern/vfs_vnops.c:556 [inline] #4 vn_read+0xa9 sys/kern/vfs_vnops.c:348 #5 dofilereadv+0x1a2 sys/kern/sys_generic.c:236 #6 sys_readv+0xa7 sys/kern/sys_generic.c:183 #7 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #7 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #8 Xsyscall+0x128 panic: witness_warn Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *180043 36924 0 0x1000 0x4080000 0 syz-executor.1 49611 97251 73 0x100010 0 1K syslogd db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 witness_warn(2,0,ffffffff81fbb6f2) at witness_warn+0x69e witness_debugger sys/kern/subr_witness.c:2509 [inline] witness_warn(2,0,ffffffff81fbb6f2) at witness_warn+0x69e sys/kern/subr_witness.c:1454 userret(ffff800020b6ea10) at userret+0x36a sys/kern/kern_sig.c:1911 syscall(ffff800021c59230) at syscall+0x44a mi_syscall_return sys/sys/syscall_mi.h:115 [inline] syscall(ffff800021c59230) at syscall+0x44a sys/arch/amd64/amd64/trap.c:577 Xsyscall(6,0,ffffffffffffffbb,0,3,ab1e4ea2280) at Xsyscall+0x128 end of kernel end trace frame: 0xab43129d3d0, count: 9 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.