panic: kernel diagnostic assertion "rn != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pipex.c", line 459 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b526c) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833f14ea,ffffffff8340f9a0,1cb,ffffffff833ac2bd) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c438958) at pipex_unlink_session_locked+0x429 pipex_destroy_all_sessions(ffff8000015a6000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff8000015a6000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:151 pppacclose(637e,81,2000,ffff8000377e8d20) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff800033fde0e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f1be370,81,fffffd80097fd000,ffff8000377e8d20) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805e19de38,ffff8000377e8d20) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805e19de38,ffff8000377e8d20) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805e19de38,ffff8000377e8d20) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805e19de38,ffff8000377e8d20) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000377e8d20) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000377e8d20,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000377e8d20,ffff800033fde450,ffff800033fde3a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 end trace frame: 0xffff800033fde440, count: 0 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}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "rn != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pipex.c", line 459 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b526c) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833f14ea,ffffffff8340f9a0,1cb,ffffffff833ac2bd) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c438958) at pipex_unlink_session_locked+0x429 pipex_destroy_all_sessions(ffff8000015a6000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff8000015a6000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:151 pppacclose(637e,81,2000,ffff8000377e8d20) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff800033fde0e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f1be370,81,fffffd80097fd000,ffff8000377e8d20) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805e19de38,ffff8000377e8d20) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805e19de38,ffff8000377e8d20) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805e19de38,ffff8000377e8d20) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805e19de38,ffff8000377e8d20) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000377e8d20) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000377e8d20,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000377e8d20,ffff800033fde450,ffff800033fde3a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800033fde450) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033fde450) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75c4d0291d40, count: -16 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800033fddeb0 rbx 0xffffffff83873e07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff8000377e8d20 rax 0xffffffff83872ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x314e37a0b8ebbd1b r11 0x808b8776ee889a97 r12 0xffffffff83873c08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff824e2f85 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800033fddea0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=352296 pid=52277 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000377e8d20 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000ffff27e0,0xffffffff83994e90 process=0xffff80003c4139e0 user=0xffff800033fd9000, vmspace=0xfffffd805ff79b98 estcpu=36, cpticks=5, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 2310 303953 2378 0 3 0x80 nanoslp syz-executor 2310 246782 2378 0 3 0x4000080 sysctllk syz-executor 2310 12508 2378 0 3 0x4000080 sysctllk syz-executor 2310 498173 2378 0 3 0x4000080 fsleep syz-executor 72386 194663 21936 0 3 0x80 nanoslp syz-executor 72386 78543 21936 0 3 0x4000080 sysctllk syz-executor 72386 4419 21936 0 3 0x4000080 fsleep syz-executor 88591 41427 7663 0 3 0x90 nanoslp syz-executor 88591 218110 7663 0 3 0x4000090 sysctllk syz-executor 88591 145070 7663 0 3 0x4000090 fsleep syz-executor 88591 290958 7663 0 3 0x4000090 fsleep syz-executor 43753 8439 40104 -1 3 0x90 nanoslp syz-executor 43753 264825 40104 -1 3 0x4000090 sysctllk syz-executor 43753 23956 40104 -1 3 0x4000090 sysctllk syz-executor 43753 52733 40104 -1 3 0x4000090 fsleep syz-executor 21969 249673 46255 0 3 0x82 sysctllk sshd-session 73675 306577 32256 0 3 0x3000 suspend syz-executor 73675 61653 32256 0 3 0x4081000 biowait syz-executor 73675 426787 32256 0 3 0x4081000 fltagain2 syz-executor 42338 485330 97384 0 2 0 syz-executor 42338 506405 97384 0 3 0x4000080 sysctllk syz-executor 42338 395271 97384 0 3 0x4000080 sysctllk syz-executor 42338 153210 97384 0 3 0x4000080 sysctllk syz-executor 42338 196340 97384 0 3 0x4000080 sysctllk syz-executor 42338 53244 97384 0 3 0x4000080 fsleep syz-executor 7663 50949 20195 0 3 0x82 nanoslp syz-executor 40104 508 20195 0 3 0x82 nanoslp syz-executor 32256 4004 20195 0 3 0x82 nanoslp syz-executor 2378 100651 20195 0 3 0x82 nanoslp syz-executor 97384 27186 20195 0 3 0x82 nanoslp syz-executor 75964 302714 20195 0 3 0x82 nanoslp syz-executor 78103 3699 20195 0 3 0x82 nanoslp syz-executor 21936 276400 20195 0 3 0x82 nanoslp syz-executor 20195 122416 51270 0 3 0x82 kqread syz-executor 51270 289576 39542 0 3 0x10008a sigsusp ksh 39542 310324 18224 0 3 0x98 kqread sshd-session 18224 95103 46255 0 3 0x92 kqread sshd-session 90609 167598 1 0 3 0x100083 ttyin getty 46255 128569 1 0 3 0x88 kqread sshd 3585 502618 52269 74 3 0x1100092 bpf pflogd 52269 301149 1 0 3 0x80 sbwait pflogd 52017 343766 18490 73 3 0x1100090 kqread syslogd 18490 127198 1 0 3 0x100082 sbwait syslogd 35493 98610 1 0 3 0x100080 kqread resolvd 98018 46923 47559 77 3 0x100092 kqread dhcpleased 34998 521510 47559 77 3 0x100092 kqread dhcpleased 47559 472805 1 0 3 0x80 kqread dhcpleased 31531 334773 0 0 3 0x14200 bored smr 51049 4494 0 0 3 0x14200 pgzero zerothread 50775 489251 0 0 3 0x14200 aiodoned aiodoned 96621 463150 0 0 3 0x14200 syncer update 81472 286949 0 0 3 0x14200 cleaner cleaner 52256 489104 0 0 3 0x14200 reaper reaper 5095 58221 0 0 3 0x14200 pgdaemon pagedaemon 69343 411154 0 0 3 0x14200 bored viomb 87115 394504 0 0 3 0x40014200 acpi0 acpi0 39419 299492 0 0 3 0x40014200 idle1 93667 219994 0 0 3 0x14200 bored softnet1 29303 140060 0 0 2 0x14200 softnet0 73660 108919 0 0 3 0x14200 bored systqmp 54088 282566 0 0 3 0x14200 bored systq 40748 481203 0 0 3 0x14200 tmoslp softclockmp 93811 29474 0 0 3 0x40014200 tmoslp softclock 10589 325429 0 0 3 0x40014200 idle0 1 36411 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex /syzkaller/managers/multicore/kernel/sys/net/pipex.c:78 r = 0 (0xffffffff838a8330) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pipex_destroy_all_sessions+0x2f sys/net/pipex.c:144 #3 pppacclose+0x16f sys/net/if_pppx.c:1335 #4 spec_close+0x417 sys/kern/spec_vnops.c:-1 #5 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #6 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #6 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #7 fdrop+0x121 sys/kern/kern_descrip.c:1280 #8 closef+0x192 sys/kern/kern_descrip.c:1264 #9 fdfree+0x116 sys/kern/kern_descrip.c:1195 #10 exit1+0x576 sys/kern/kern_exit.c:215 #11 sys_exit+0x1a sys/kern/kern_exit.c:-1 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #13 Xsyscall+0x128 Process 73675 (syz-executor) thread 0xffff8000377e8fb8 (61653) exclusive rrwlock inode r = 0 (0xfffffd80740d7418) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 73675 (syz-executor) thread 0xffff8000377e9250 (426787) exclusive rwlock sysctllk r = 0 (0xffffffff837c9ad8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:191 #3 kern_sysctl+0xd17 sys/kern/kern_sysctl.c:726 #4 sys_sysctl+0x3e5 sys/kern/kern_sysctl.c:-1 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #6 Xsyscall+0x128 Process 29303 (softnet0) thread 0xffff8000ffffe530 (140060) shared rwlock softnet0 r = 0 (0xffff80000002c078) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11075 12094K 12308K 166960K 12443 0 pcb 18 15K 16K 166960K 134 0 rtable 212 8K 9K 166960K 409 0 pf 38 18K 22K 166960K 89 0 ifaddr 41 7K 7K 166960K 68 0 ifgroup 59 2K 3K 166960K 97 0 sysctl 3 1K 9K 166960K 8 0 counters 76 37K 38K 166960K 126 0 ioctlops 0 0K 4K 166960K 1624 0 iov 0 0K 12K 166960K 17 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 85K 166960K 1646 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 420 0 sigio 0 0K 0K 166960K 4 0 proc 72 115K 180K 166960K 567 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 32 0 in_multi 91 6K 7K 166960K 115 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 438 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 277 152K 168K 166960K 5611 0 UVM aobj 13 4K 4K 166960K 17 0 pinsyscall 45 90K 104K 166960K 1549 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 29 0 NDP 13 0K 1K 166960K 46 0 temp 46 8672K 8737K 166960K 13359 0 kqueue 15 24K 28K 166960K 86 0 SYN cache 2 8K 16K 166960K 3 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 56 0 53 1 0 1 1 0 8 0 rtentry 176 117 0 30 5 0 5 5 0 8 0 unpcb 144 258 0 238 4 3 1 4 0 8 0 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 736 174 0 167 4 0 4 4 0 8 3 arp 136 18 0 4 1 0 1 1 0 8 0 inpcb 328 517 0 503 8 1 7 7 0 8 5 nd6 152 25 0 3 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 25 0 22 2 1 1 1 0 8 0 pppxif 1504 1 0 1 1 0 1 1 0 8 1 pffrag 232 2 0 1 2 1 1 1 0 482 0 pffrnode 88 2 0 1 2 1 1 1 0 8 0 pffrent 40 5 0 4 2 1 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfanchor 1288 2 0 2 1 1 0 1 0 8 0 pfstitem 24 34 0 0 1 0 1 1 0 8 0 pfstkey 128 34 0 0 2 0 2 2 0 8 0 pfstate 448 34 0 0 4 0 4 4 0 8 0 pfrule 1344 24 0 18 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 582 0 157 31 2 29 31 0 8 2 art_table 40 583 0 157 5 0 5 5 0 8 0 art_node 32 117 0 39 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 0 1 0 1 1 0 8 0 semapl 112 7 0 2 1 0 1 1 0 8 0 shmpl 112 12 0 3 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2210 0 700 95 0 95 95 0 8 0 ffsino 296 2210 0 700 117 0 117 117 0 8 0 nchpl 144 2837 0 1125 64 0 64 64 0 8 0 rtmask 32 6 0 5 2 1 1 1 0 8 0 vnodes 216 2383 0 0 133 0 133 133 0 8 0 namei 1024 9372 0 9372 1 0 1 1 0 8 1 percpumem 16 78 0 25 1 0 1 1 0 8 0 vcpupl 3968 1 0 0 1 0 1 1 0 8 0 vmpool 848 2 0 1 2 1 1 1 0 8 0 kstatmem 264 62 0 31 4 1 3 3 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 14466 0 14465 3 2 1 2 1 8 0 plimitpl 152 195 0 175 1 0 1 1 0 8 0 sigapl 424 729 0 680 7 1 6 7 0 8 0 knotepl 120 511 0 0 16 0 16 16 0 8 0 kqueuepl 224 233 0 222 5 0 5 5 0 8 4 pipepl 344 139 0 111 3 0 3 3 0 8 0 fdescpl 528 713 0 680 3 0 3 3 0 8 0 filepl 160 4510 0 4273 16 1 15 15 0 8 3 lockfpl 104 94 0 90 1 0 1 1 0 8 0 lockfspl 48 44 0 40 1 0 1 1 0 8 0 sessionpl 144 23 0 13 1 0 1 1 0 8 0 pgrppl 48 33 0 15 1 0 1 1 0 8 0 ucredpl 104 774 0 759 1 0 1 1 0 8 0 zombiepl 144 683 0 680 1 0 1 1 0 8 0 processpl 1232 729 0 680 5 0 5 5 0 8 0 procpl 664 1227 0 1160 6 0 6 6 0 8 0 sosppl 176 4 0 4 2 1 1 1 0 8 1 sockpl 752 839 0 802 15 4 11 11 0 8 7 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 106 0 0 14 0 14 14 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 158 0 0 10 0 10 10 0 8 0 bufpl 280 6952 0 816 439 0 439 439 0 8 0 anonpl 32 14115 0 0 114 0 114 114 0 246 0 amapchunkpl 152 18103 0 17507 39 1 38 38 0 158 14 amappl16 200 3280 0 2804 32 3 29 29 0 8 3 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 3 0 3 1 1 0 1 0 8 0 amappl13 176 431 0 430 1 0 1 1 0 8 0 amappl12 168 1078 0 1034 3 0 3 3 0 8 0 amappl11 160 7 0 7 1 1 0 1 0 8 0 amappl10 152 82 0 68 1 0 1 1 0 8 0 amappl9 144 251 0 251 1 1 0 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 93 0 92 1 0 1 1 0 8 0 amappl6 120 280 0 266 1 0 1 1 0 8 0 amappl5 112 73 0 62 1 0 1 1 0 8 0 amappl4 104 413 0 383 1 0 1 1 0 8 0 amappl3 96 3249 0 3126 5 1 4 4 0 8 0 amappl2 88 532 0 466 2 0 2 2 0 8 0 amappl1 80 10379 0 9745 16 2 14 15 0 8 0 amappl 88 4839 0 4645 5 0 5 5 0 92 0 uvmvnodes 80 112 0 0 3 0 3 3 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 72 16 0 4 1 0 1 1 0 8 0 uaddrrnd 24 713 0 680 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 713 0 680 1 0 1 1 0 8 0 vmmpekpl 168 7489 0 7450 2 0 2 2 0 8 0 vmmpepl 168 53044 0 50509 113 0 113 113 0 357 2 vmsppl 488 712 0 680 6 1 5 5 0 8 0 rwobjpl 80 17899 0 16322 34 0 34 34 0 8 1 pdppl 4096 1437 0 1363 100 26 74 85 0 8 0 pvpl 32 22679 0 0 184 1 183 183 0 265 0 pmappl 256 714 0 681 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 278 0 33 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b526c) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833f14ea,ffffffff8340f9a0,1cb,ffffffff833ac2bd) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c438958) at pipex_unlink_session_locked+0x429 pipex_destroy_all_sessions(ffff8000015a6000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff8000015a6000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:151 pppacclose(637e,81,2000,ffff8000377e8d20) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff800033fde0e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f1be370,81,fffffd80097fd000,ffff8000377e8d20) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805e19de38,ffff8000377e8d20) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805e19de38,ffff8000377e8d20) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805e19de38,ffff8000377e8d20) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805e19de38,ffff8000377e8d20) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000377e8d20) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000377e8d20,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000377e8d20,ffff800033fde450,ffff800033fde3a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800033fde450) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033fde450) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75c4d0291d40, count: -16 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc __mp_acquire_count(ffffffff839dab40,2) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 msleep_nsec(ffff80000002c06c,ffff80000002c018,20,ffffffff83402c69,ffffffffffffffff) at msleep_nsec+0x132 sys/kern/kern_synch.c:219 taskq_do_barrier(ffff80000002c000) at taskq_do_barrier+0x293 sys/kern/kern_task.c:318 ifq_destroy(ffff8000015892b0) at ifq_destroy+0x106 sys/net/ifq.c:352 if_detach(ffff800001589000) at if_detach+0x636 sys/net/if.c:-1 pppacclose(637d,1,2000,ffff8000377e8028) at pppacclose+0x118 sys/net/if_pppx.c:1329 spec_close(ffff8000333d87c0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805cf13e60,1,fffffd80097fd000,ffff8000377e8028) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805e19dbb8,ffff8000377e8028) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805e19dbb8,ffff8000377e8028) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 end trace frame: 0xffff8000333d88e0, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc __mp_acquire_count(ffffffff839dab40,2) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 msleep_nsec(ffff80000002c06c,ffff80000002c018,20,ffffffff83402c69,ffffffffffffffff) at msleep_nsec+0x132 sys/kern/kern_synch.c:219 taskq_do_barrier(ffff80000002c000) at taskq_do_barrier+0x293 sys/kern/kern_task.c:318 ifq_destroy(ffff8000015892b0) at ifq_destroy+0x106 sys/net/ifq.c:352 if_detach(ffff800001589000) at if_detach+0x636 sys/net/if.c:-1 pppacclose(637d,1,2000,ffff8000377e8028) at pppacclose+0x118 sys/net/if_pppx.c:1329 spec_close(ffff8000333d87c0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805cf13e60,1,fffffd80097fd000,ffff8000377e8028) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805e19dbb8,ffff8000377e8028) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805e19dbb8,ffff8000377e8028) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805e19dbb8,ffff8000377e8028) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805e19dbb8,ffff8000377e8028) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000377e8028) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000377e8028,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000377e8028,ffff8000333d8b30,ffff8000333d8a80) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000333d8b30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333d8b30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x725ff125da80, count: -21