kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Jul 24 15:04:48 PDT 2020 OpenBSD/amd64 (ci-openbsd-main-8.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.178' (ECDSA) to the list of known hosts. 2020/07/24 15:05:02 fuzzer started 2020/07/24 15:05:04 dialing manager at 10.128.15.235:24869 2020/07/24 15:05:04 syscalls: 381 2020/07/24 15:05:04 code coverage: enabled 2020/07/24 15:05:04 comparison tracing: enabled 2020/07/24 15:05:04 extra coverage: support is not implemented in syzkaller 2020/07/24 15:05:04 setuid sandbox: enabled 2020/07/24 15:05:04 namespace sandbox: support is not implemented in syzkaller 2020/07/24 15:05:04 Android sandbox: support is not implemented in syzkaller 2020/07/24 15:05:04 fault injection: support is not implemented in syzkaller 2020/07/24 15:05:04 leak checking: support is not implemented in syzkaller 2020/07/24 15:05:04 net packet injection: enabled 2020/07/24 15:05:04 net device setup: support is not implemented in syzkaller 2020/07/24 15:05:04 concurrency sanitizer: support is not implemented in syzkaller 2020/07/24 15:05:04 devlink PCI setup: support is not implemented in syzkaller 2020/07/24 15:05:04 USB emulation: support is not implemented in syzkaller 15:05:12 executing program 0: r0 = openat$wsmuxkbd(0xffffffffffffff9c, &(0x7f0000000000)='/dev/wskbd\x00', 0x2, 0x0) fcntl$getflags(r0, 0x3) r1 = openat$wskbd(0xffffffffffffff9c, &(0x7f0000000040)='/dev/wskbd0\x00', 0x80, 0x0) ioctl$WSKBDIO_SETBELL(r1, 0x80105703, &(0x7f0000000080)={0x7f, 0x4, 0x9, 0x7f}) pipe2(&(0x7f00000000c0)={0xffffffffffffffff}, 0x0) ioctl$KDSETMODE(r2, 0x20004b0a, &(0x7f0000000100)=0x1) ioctl$WSDISPLAYIO_DELFONT(0xffffffffffffffff, 0x8058574f, &(0x7f0000000140)={'./file0\x00', 0x8000, 0x1, 0x3, 0x1, 0x8, 0x3, 0x401, 0x0, 0x2, 0x5, 0x2}) r3 = dup2(0xffffffffffffffff, 0xffffffffffffffff) ioctl$WSKBDIO_GETMAP(r3, 0xc010570d, &(0x7f0000000200)={0x1, &(0x7f00000001c0)=[{0x8000, 0x8, 0xd12, 0x100, 0x2}]}) r4 = socket$inet6(0x18, 0x8000, 0x5) setsockopt$inet6_MRT6_ADD_MIF(r4, 0x29, 0x66, &(0x7f0000000240)={0x0, 0x1, 0x80, 0x58ae, 0x1}, 0xc) geteuid() munlock(&(0x7f0000ffc000/0x2000)=nil, 0x2000) r5 = semget$private(0x0, 0x0, 0x2) semctl$GETALL(r5, 0x0, 0x6, &(0x7f0000000280)=""/62) r6 = syz_open_pts() ioctl$TIOCSETA(r6, 0x802c7414, &(0x7f00000002c0)={0x80000000, 0x0, 0x5, 0x45ce, "861012ffdd8ee0a33ff24c7918f2a30bb6bcd5e1", 0x5, 0x1}) r7 = openat$zero(0xffffffffffffff9c, &(0x7f0000000300)='/dev/zero\x00', 0x1, 0x0) setsockopt$inet6_MRT6_ADD_MFC(r7, 0x29, 0x68, &(0x7f0000000340)={{0x18, 0x3, 0x400, 0x20}, {0x18, 0x3, 0x8ec, 0x7ff}, 0x9, [0x10001, 0x10001, 0x8, 0x80000001, 0x10000000, 0x7ff, 0x209021b3, 0x80000001]}, 0x3c) open(&(0x7f0000000380)='./file0\x00', 0x100, 0x4) 15:05:12 executing program 1: ioctl$TIOCFLUSH(0xffffffffffffff9c, 0x80047410, &(0x7f0000000000)=0x7) ioctl$TIOCSFLAGS(0xffffffffffffff9c, 0x8004745c, &(0x7f0000000040)) mprotect(&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x0) sysctl$net_inet_ipcomp(&(0x7f0000000080)={0x4, 0x2, 0x6c, 0x1}, 0x4, &(0x7f00000000c0)="af2e9142188427a70179f639efb6b40f4f01e464d63a468b92f48c5b5fe62222efed46b62973976ea5497acf6b9f85f431742d4f3167b5df540cfdec2dc4bb9107aebad1394a51fb685d4eee647742a844d1976e8dae068d1e88b19cf36ebbebf87f1abc171410fcab0cac4eef2ab6ff7ee4de8346957cfe7c8cd609c1bb4ddefe9ddfa85ef3e86299c57f2ed0665f5d42f169279dcb5372842d07f1b1feb46e81e13afe013d2a37618e4783268e", &(0x7f0000000180)=0xae, &(0x7f00000001c0)="94cac7a09ccd11ec855c1281d43a1f7884275df66f3bad74f37fbede774144ff37fa8f3553ad2493cc8e0b85b47e04c605163900de406869cdcf54966b60f9cd19ee0efd4845f7e792266d24c891a0474c4d341a3d761a", 0x57) r0 = getpgid(0x0) fcntl$setown(0xffffffffffffff9c, 0x6, r0) ioctl$WSKBDIO_SETKEYREPEAT(0xffffffffffffff9c, 0x800c5707, &(0x7f0000000240)={0x200, 0xffff, 0xfe63}) r1 = shmget$private(0x0, 0x1000, 0x1, &(0x7f0000ffc000/0x1000)=nil) shmctl$SHM_LOCK(r1, 0x3) r2 = openat$vmm(0xffffffffffffff9c, &(0x7f0000000280)='/dev/vmm\x00', 0x20, 0x0) lseek(r2, 0x0, 0xffffffffffff0001, 0x2) sysctl$net_mpls(&(0x7f00000002c0)={0x4, 0x21, 0x6}, 0x3, &(0x7f0000000300)="7aed6d3a58ca76", &(0x7f0000000340)=0x7, &(0x7f0000000380)="2c776ae2f07b8516b4b1b66dd39e15a0cee29b17f534a55bd35ddeb2e4546ea67dd8408bbb218a11c677a752c4d000385f49feabf7a973e70f62a8647bf9adedcd80fe13cd3ffd2b05d7b22b6f2ca26fca16f9a02bad158d2efdc096d5a23bdb16b9a29e9d948b607851a1f2bb99b7815748d8dbd04905f4f0927f9875bab2aaec178833a9a8a6db9a01d71d4150980e0b19f244d60c0a7706cced58eae8", 0x9e) getsockopt$SO_PEERCRED(0xffffffffffffff9c, 0xffff, 0x1022, &(0x7f0000000440)={0x0, 0x0}, 0xc) seteuid(r3) munlock(&(0x7f0000ffe000/0x1000)=nil, 0x1000) socketpair(0x1, 0x2, 0xff, &(0x7f0000000480)={0xffffffffffffffff}) r5 = openat$bpf(0xffffffffffffff9c, &(0x7f00000004c0)='/dev/bpf\x00', 0x8, 0x0) r6 = openat$bpf(0xffffffffffffff9c, &(0x7f0000000500)='/dev/bpf\x00', 0x80, 0x0) r7 = openat$speaker(0xffffffffffffff9c, &(0x7f0000000540)='/dev/speaker\x00', 0x200, 0x0) poll(&(0x7f00000005c0)=[{r4, 0x8}, {r5, 0x100}, {r2, 0x8}, {r2, 0x4}, {r6, 0x10}, {r7, 0x4}, {0xffffffffffffffff, 0x20}, {r2, 0x100}], 0x8, 0x95c6) login: pckbd_enable: command error pckbd_enable: command error pckbd_enable: command error 15:05:15 executing program 1: ioctl$TIOCSETA(0xffffffffffffffff, 0x802c7414, &(0x7f00000000c0)={0x0, 0x0, 0x2ff, 0x0, "f81d00200b0f000005000000ac311fcad2cad800"}) r0 = socket(0x18, 0xc002, 0x0) connect$unix(r0, &(0x7f00000000c0)=@abs={0x682eb13985c518e6, 0x7}, 0x1c) r1 = openat$speaker(0xffffffffffffff9c, &(0x7f0000000080)='/dev/speaker\x00', 0x42, 0x0) r2 = dup(r1) pwrite(r2, &(0x7f0000000400)="4e35dd", 0x3, 0x0, 0x0) ioctl$TIOCSETAW(r2, 0x802c7415, &(0x7f0000000000)={0xfffff094, 0x0, 0x8, 0x3b, "4bb9fb882fa8e22e0150fef53a61902231d4a281", 0x3, 0xf8000000}) getsockname$inet(r0, &(0x7f00000000c0), &(0x7f0000000040)=0xc) r3 = socket(0x18, 0x1, 0x0) connect$unix(r3, &(0x7f00000000c0)=@abs={0x682eb13985c518e6, 0x7}, 0x1c) 15:05:15 executing program 0: ioctl$VMM_IOC_WRITEREGS(0xffffffffffffffff, 0x82485608, &(0x7f0000000240)={0x0, 0x0, 0x0, {[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x331c], [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffffd, 0x6], [0x0, 0x0, 0x0, 0x9, 0xffffffffffffffff, 0xf7ffffffffffffff], [0x0, 0x0, 0x482], [{}, {0x0, 0x4a5f}, {0x0, 0x0, 0x0, 0xfffffffffffffffe}, {0x5}, {}, {0x0, 0x0, 0x0, 0x10001}]}}) ioctl$BIOCSETIF(0xffffffffffffffff, 0x8020426c, &(0x7f0000000300)={'tap', 0x0}) r0 = openat$speaker(0xffffffffffffff9c, &(0x7f0000000080)='/dev/speaker\x00', 0x42, 0x0) r1 = dup(r0) pwrite(r1, &(0x7f0000000400)="4e35dd", 0x3, 0x0, 0x0) ioctl$VT_RELDISP(r1, 0x20007604, &(0x7f0000000000)=0x1) madvise(&(0x7f00005a7000/0x4000)=nil, 0x4000, 0x2) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x5) r2 = socket(0x18, 0x2, 0x0) r3 = fcntl$dupfd(r2, 0x0, r2) ioctl$TIOCFLUSH(r3, 0x8080691a, &(0x7f0000000300)) r4 = openat$speaker(0xffffffffffffff9c, &(0x7f0000000080)='/dev/speaker\x00', 0x42, 0x0) r5 = dup(r4) socket$unix(0x1, 0x1, 0x0) pwrite(r5, &(0x7f0000000400)="4e35dd", 0x3, 0x0, 0x0) ioctl$TIOCSWINSZ(r5, 0x80087467, &(0x7f0000000040)={0x9, 0x1000, 0x5, 0x62}) panic: m_copym0: m == NULL and not COPYALL Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 37964 84307 0 0x12 0 0 sshd db_enter() at db_enter+0x18 panic(ffffffff8241e349) at panic+0x15c m_copym(fffffd805891c100,4b4,580,2) at m_copym+0x589 tcp_output(ffff800000ac2ee0) at tcp_output+0x154d tcp_usrreq(fffffd805da75008,9,fffffd805891c000,0,0,ffff80001d71c4f0) at tcp_usrreq+0xa54 sosend(fffffd805da75008,0,ffff80001d723b28,0,0,80) at sosend+0x669 dofilewritev(ffff80001d71c4f0,4,ffff80001d723b28,0,ffff80001d723c10) at dofilewritev+0x1ab sys_write(ffff80001d71c4f0,ffff80001d723bc0,ffff80001d723c10) at sys_write+0x83 syscall(ffff80001d723c90) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc600, count: 5 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic m_copym0: m == NULL and not COPYALL ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8241e349) at panic+0x15c m_copym(fffffd805891c100,4b4,580,2) at m_copym+0x589 tcp_output(ffff800000ac2ee0) at tcp_output+0x154d tcp_usrreq(fffffd805da75008,9,fffffd805891c000,0,0,ffff80001d71c4f0) at tcp_usrreq+0xa54 sosend(fffffd805da75008,0,ffff80001d723b28,0,0,80) at sosend+0x669 dofilewritev(ffff80001d71c4f0,4,ffff80001d723b28,0,ffff80001d723c10) at dofilewritev+0x1ab sys_write(ffff80001d71c4f0,ffff80001d723bc0,ffff80001d723c10) at sys_write+0x83 syscall(ffff80001d723c90) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc600, count: -10 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d7235f0 rbx 0xffff80001d7236a0 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff8228533f kprintf+0x15f r9 0x1 r10 0x2 r11 0xecb1fb8539937403 r12 0x3000000008 r13 0xffff80001d723600 r14 0x100 r15 0x1 rip 0xffffffff81cfcf18 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d7235e0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (sshd) pid=37964 stat=onproc flags process=12 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d71d600,0xffff80001d71c9e0 process=0xffff80001d706af8 user=0xffff80001d71e000, vmspace=0xfffffd806bc09880 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 89330 443090 77248 0 2 0x480 syz-executor.1 89330 309512 77248 0 3 0x4000080 bell syz-executor.1 89330 398561 77248 0 3 0x4000080 netcon2 syz-executor.1 77248 151433 77937 0 3 0x82 nanosleep syz-executor.1 56301 267312 77937 0 2 0x2 syz-executor.0 77937 318322 32875 0 3 0x82 thrsleep syz-fuzzer 77937 209570 32875 0 2 0x4000482 syz-fuzzer 77937 93756 32875 0 2 0x4000002 syz-fuzzer 77937 255409 32875 0 3 0x4000082 thrsleep syz-fuzzer 77937 243305 32875 0 3 0x4000082 thrsleep syz-fuzzer 77937 443082 32875 0 3 0x4000082 thrsleep syz-fuzzer 77937 108159 32875 0 3 0x4000082 thrsleep syz-fuzzer 32875 410624 84307 0 3 0x10008a pause ksh *84307 37964 89686 0 7 0x12 sshd 83307 274124 1 0 3 0x100083 ttyin getty 89686 343710 1 0 3 0x80 select sshd 76206 183627 76650 73 3 0x100090 kqread syslogd 76650 450911 1 0 3 0x100082 netio syslogd 30165 118641 1 77 3 0x100090 poll dhclient 97038 45776 1 0 3 0x80 poll dhclient 330 263885 0 0 3 0x14200 bored smr 80293 120128 0 0 2 0x14200 zerothread 20838 502748 0 0 3 0x14200 aiodoned aiodoned 85175 349098 0 0 3 0x14200 syncer update 22148 278305 0 0 3 0x14200 cleaner cleaner 65418 298283 0 0 3 0x14200 reaper reaper 56554 320055 0 0 3 0x14200 pgdaemon pagedaemon 99170 127118 0 0 3 0x14200 bored crynlk 60552 59330 0 0 3 0x14200 bored crypto 30877 418133 0 0 3 0x40014200 acpi0 acpi0 56339 324520 0 0 3 0x14200 bored softnet 22375 458694 0 0 3 0x14200 bored systqmp 57415 266107 0 0 3 0x14200 bored systq 73055 413235 0 0 3 0x40014200 bored softclock 71005 120154 0 0 3 0x40014200 idle0 1 317071 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9447 6323K 6339K 78643K 10554 0 pcb 13 8K 8K 78643K 13 0 rtable 107 3K 3K 78643K 192 0 ifaddr 39 10K 10K 78643K 41 0 counters 21 16K 16K 78643K 21 0 ioctlops 0 0K 2K 78643K 15 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1225 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 38 0 proc 47 38K 63K 78643K 358 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 33 2K 2K 78643K 33 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 31 148K 148K 78643K 31 0 exec 0 0K 1K 78643K 181 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 126 23K 23K 78643K 974 0 UVM aobj 5 2K 2K 78643K 5 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 5 0K 0K 78643K 9 0 temp 61 3847K 3911K 78643K 1778 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 0 1 0 1 1 0 8 0 rtpcb 80 19 0 17 1 0 1 1 0 8 0 rtentry 112 46 0 1 2 0 2 2 0 8 0 unpcb 120 25 0 17 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 612 0 612 1 0 1 1 0 8 1 tcpcb 544 11 0 6 1 0 1 1 0 8 0 inpcb 296 36 0 27 1 0 1 1 0 8 0 nd6 48 7 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 203 0 0 13 0 13 13 0 8 0 art_table 32 204 0 0 2 0 2 2 0 8 0 art_node 16 45 0 4 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1421 0 23 88 0 88 88 0 8 0 ffsino 240 1421 0 23 83 0 83 83 0 8 0 nchpl 144 1646 0 43 60 0 60 60 0 8 0 uvmvnodes 72 1468 0 0 27 0 27 27 0 8 0 vnodes 208 1468 0 0 78 0 78 78 0 8 0 namei 1024 4057 0 4057 2 1 1 1 0 8 1 scxspl 192 4789 0 4789 2 1 1 1 0 8 1 plimitpl 152 14 0 7 1 0 1 1 0 8 0 sigapl 424 224 0 196 4 0 4 4 0 8 0 futexpl 56 121 0 121 1 0 1 1 0 8 1 knotepl 112 61 0 42 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipepl 272 70 0 60 1 0 1 1 0 8 0 fdescpl 432 210 0 196 2 0 2 2 0 8 0 filepl 120 1034 0 936 4 0 4 4 0 8 1 lockfpl 104 8 0 7 1 0 1 1 0 8 0 lockfspl 48 4 0 3 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 54 0 47 1 0 1 1 0 8 0 zombiepl 144 196 0 196 2 1 1 1 0 8 1 processpl 928 224 0 196 4 0 4 4 0 8 0 procpl 624 238 0 202 4 0 4 4 0 8 1 sockpl 400 80 0 61 3 0 3 3 0 8 1 mcl4k 4096 9 0 9 2 1 1 1 0 8 1 mcl2k 2048 94437 0 94376 20 4 16 18 0 8 6 mtagpl 96 2 0 2 1 1 0 1 0 8 0 mbufpl 256 149142 0 148981 14 2 12 12 0 8 1 bufpl 280 3281 0 126 226 0 226 226 0 8 0 anonpl 16 40168 0 24542 65 1 64 64 0 107 1 amapchunkpl 152 1270 0 1124 8 0 8 8 0 158 2 amappl16 192 951 0 118 42 0 42 42 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 37 0 27 1 0 1 1 0 8 0 amappl13 168 27 0 24 1 0 1 1 0 8 0 amappl12 160 8 0 5 2 1 1 1 0 8 0 amappl11 152 52 0 42 1 0 1 1 0 8 0 amappl10 144 15 0 10 1 0 1 1 0 8 0 amappl9 136 257 0 254 1 0 1 1 0 8 0 amappl8 128 327 0 283 2 0 2 2 0 8 0 amappl7 120 108 0 96 1 0 1 1 0 8 0 amappl6 112 24 0 20 2 1 1 1 0 8 0 amappl5 104 384 0 373 1 0 1 1 0 8 0 amappl4 96 418 0 394 1 0 1 1 0 8 0 amappl3 88 98 0 93 1 0 1 1 0 8 0 amappl2 80 855 0 788 2 0 2 2 0 8 0 amappl1 72 13528 0 13100 24 13 11 17 0 8 2 amappl 80 505 0 461 1 0 1 1 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 210 0 196 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 210 0 196 1 0 1 1 0 8 0 vmmpekpl 168 5650 0 5621 2 0 2 2 0 8 0 vmmpepl 168 33883 0 31936 127 12 115 115 0 357 28 vmsppl 272 209 0 196 2 0 2 2 0 8 1 pdppl 4096 426 0 392 6 0 6 6 0 8 1 pvpl 32 128964 0 110382 160 1 159 159 0 265 8 pmappl 200 209 0 196 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 245 0 10 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8241e349) at panic+0x15c m_copym(fffffd805891c100,4b4,580,2) at m_copym+0x589 tcp_output(ffff800000ac2ee0) at tcp_output+0x154d tcp_usrreq(fffffd805da75008,9,fffffd805891c000,0,0,ffff80001d71c4f0) at tcp_usrreq+0xa54 sosend(fffffd805da75008,0,ffff80001d723b28,0,0,80) at sosend+0x669 dofilewritev(ffff80001d71c4f0,4,ffff80001d723b28,0,ffff80001d723c10) at dofilewritev+0x1ab sys_write(ffff80001d71c4f0,ffff80001d723bc0,ffff80001d723c10) at sys_write+0x83 syscall(ffff80001d723c90) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc600, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8241e349) at panic+0x15c m_copym(fffffd805891c100,4b4,580,2) at m_copym+0x589 tcp_output(ffff800000ac2ee0) at tcp_output+0x154d tcp_usrreq(fffffd805da75008,9,fffffd805891c000,0,0,ffff80001d71c4f0) at tcp_usrreq+0xa54 sosend(fffffd805da75008,0,ffff80001d723b28,0,0,80) at sosend+0x669 dofilewritev(ffff80001d71c4f0,4,ffff80001d723b28,0,ffff80001d723c10) at dofilewritev+0x1ab sys_write(ffff80001d71c4f0,ffff80001d723bc0,ffff80001d723c10) at sys_write+0x83 syscall(ffff80001d723c90) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc600, count: -10