Warning: Permanently added '10.128.0.238' (ECDSA) to the list of known hosts. 2020/06/28 04:18:55 parsed 1 programs 2020/06/28 04:19:00 executed programs: 0 2020/06/28 04:19:05 executed programs: 224 2020/06/28 04:19:10 executed programs: 474 login: panic: pool_do_get: mbufpl free list modified: page 0xfffffd806f2b1000; item addr 0xfffffd806f2b1400; offset 0x0=0x0 != 0xf6854d0a023bb1ed Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 473581 72393 0 0x2 0 1K syz-executor.0 * 94234 53395 0 0x12 0 0 sshd db_enter() at db_enter+0x18 panic(ffffffff824912bf) at panic+0x15c pool_do_get(ffffffff828b7610,2,ffff800020e3f268) at pool_do_get+0x439 pool_get(ffffffff828b7610,2) at pool_get+0xeb m_copym(fffffd806f617b00,0,54,2) at m_copym+0x174 tcp_output(ffff800000ada760) at tcp_output+0x15ba tcp_usrreq(fffffd806eae9af8,9,fffffd806f617b00,0,0,ffff800020e4f120) at tcp_usrreq+0xa55 sosend(fffffd806eae9af8,0,ffff800020e3f748,0,0,80) at sosend+0x671 dofilewritev(ffff800020e4f120,4,ffff800020e3f748,0,ffff800020e3f830) at dofilewritev+0x1b6 sys_write(ffff800020e4f120,ffff800020e3f7e0,ffff800020e3f830) at sys_write+0x83 syscall(ffff800020e3f8b0) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0230, count: 3 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}>