panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8078755600+16 0x0!=0xe4b883ce31763372 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 479546 57592 0 0x14000 0x200 0 systqmp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823ffba7) at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff828b7610) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828b7610) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828b7610,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,1) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 rtm_msg1(2,ffff800020ed7690) at rtm_msg1+0x6e sys/net/rtsock.c:1534 rtm_send(fffffd806f37b150,2,0,0) at rtm_send+0x120 rtm_miss sys/net/rtsock.c:1679 [inline] rtm_send(fffffd806f37b150,2,0,0) at rtm_send+0x120 sys/net/rtsock.c:1657 rt_ifa_del(ffff800000aa2d00,200404,ffff800000aa2d58,0) at rt_ifa_del+0x3bb sys/net/route.c:1190 rt_ifa_dellocal(ffff800000aa2d00) at rt_ifa_dellocal+0x149 sys/net/route.c:1290 in_purgeaddr(ffff800000aa2d00) at in_purgeaddr+0x12a sys/netinet/in.c:755 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1142 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:480 end trace frame: 0xffff800020ed7b80, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8078755600+16 0x0!=0xe4b883ce31763372 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823ffba7) at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff828b7610) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828b7610) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828b7610,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,1) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 rtm_msg1(2,ffff800020ed7690) at rtm_msg1+0x6e sys/net/rtsock.c:1534 rtm_send(fffffd806f37b150,2,0,0) at rtm_send+0x120 rtm_miss sys/net/rtsock.c:1679 [inline] rtm_send(fffffd806f37b150,2,0,0) at rtm_send+0x120 sys/net/rtsock.c:1657 rt_ifa_del(ffff800000aa2d00,200404,ffff800000aa2d58,0) at rt_ifa_del+0x3bb sys/net/route.c:1190 rt_ifa_dellocal(ffff800000aa2d00) at rt_ifa_dellocal+0x149 sys/net/route.c:1290 in_purgeaddr(ffff800000aa2d00) at in_purgeaddr+0x12a sys/netinet/in.c:755 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1142 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:480 spec_close(ffff800020ed7b90) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e8d25b8,7,fffffd807f7bf780,ffff800020ddcc38) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806cf6cd20,ffff800020ddcc38) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cf6cd20,ffff800020ddcc38) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806cf6cd20,ffff800020ddcc38) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806cf6cd20,ffff800020ddcc38) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020ddcc38) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020ddcc38,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020ddcc38,9) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020ddcc38,9) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020ddcc38) at userret+0x199 sys/kern/kern_sig.c:1872 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffe6dc0, count: -24 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020ed73b0 rbx 0xffff800020ed7460 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff817e6a8f kprintf+0x16f r9 0x1 r10 0x2 r11 0xce58ad50be4a2ef8 r12 0x3000000008 r13 0xffff800020ed73c0 r14 0x100 r15 0x1 rip 0xffffffff81d39c28 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020ed73a0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=296758 stat=onproc flags process=a proc=2000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddc008,0xffff800020dddae8 process=0xffff800020df03e8 user=0xffff800020ed2000, vmspace=0xfffffd807efff730 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17029 336694 68584 0 3 0x82 thrsleep syz-execprog 17029 60343 68584 0 3 0x4000082 thrsleep syz-execprog 17029 223131 68584 0 3 0x4000082 thrsleep syz-execprog 17029 478398 68584 0 3 0x4000082 thrsleep syz-execprog 17029 524065 68584 0 3 0x4000082 kqread syz-execprog 17029 448730 68584 0 3 0x4000082 thrsleep syz-execprog 17029 466110 68584 0 3 0x4000082 wait syz-execprog 17029 6498 68584 0 3 0x4000082 thrsleep syz-execprog 17029 451523 68584 0 3 0x4000082 thrsleep syz-execprog 17029 316519 68584 0 3 0x4000082 thrsleep syz-execprog 68584 375609 97690 0 3 0x10008a pause ksh 97690 124658 91311 0 3 0x92 select sshd 65476 431573 1 0 3 0x100083 ttyin getty 91311 107397 1 0 3 0x80 select sshd 39593 244502 30751 74 3 0x100092 bpf pflogd 30751 262697 1 0 3 0x80 netio pflogd 24346 162888 64251 73 3 0x100090 kqread syslogd 64251 200065 1 0 3 0x100082 netio syslogd 58354 438323 1 77 3 0x100090 poll dhclient 46648 512488 1 0 3 0x80 poll dhclient 76422 388814 0 0 3 0x14200 bored smr 61330 357791 0 0 3 0x14200 pgzero zerothread 93615 257606 0 0 3 0x14200 aiodoned aiodoned 16787 375959 0 0 3 0x14200 syncer update 68496 283871 0 0 3 0x14200 cleaner cleaner 97790 254524 0 0 3 0x14200 reaper reaper 74725 220614 0 0 3 0x14200 pgdaemon pagedaemon 60064 141786 0 0 3 0x14200 bored crynlk 89238 264502 0 0 3 0x14200 bored crypto 41911 429435 0 0 3 0x40014200 acpi0 acpi0 95141 77986 0 0 3 0x40014200 idle1 70327 206133 0 0 3 0x14200 bored softnet 57592 479546 0 0 7 0x14200 systqmp 6541 107496 0 0 3 0x14200 bored systq 63735 51696 0 0 3 0x40014200 bored softclock 80034 50182 0 0 3 0x40014200 idle0 1 184099 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex systqmp r = 0 (0xffffffff826e6ee8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 taskq_next_work+0x33 sys/kern/kern_task.c:394 #4 taskq_thread+0x135 sys/kern/kern_task.c:434 #5 proc_trampoline+0x1c ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9465 6396K 6396K 78643K 10560 0 pcb 13 8K 8K 78643K 13 0 rtable 79 2K 2K 78643K 163 0 ifaddr 37 9K 9K 78643K 39 0 counters 41 33K 33K 78643K 41 0 ioctlops 0 0K 4K 78643K 1468 0 mount 1 1K 1K 78643K 1 0 vnodes 1183 74K 75K 78643K 1188 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 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 2 4K 12K 78643K 18 0 proc 59 63K 83K 78643K 398 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 22 1K 1K 78643K 22 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 19 95K 95K 78643K 19 0 exec 0 0K 1K 78643K 197 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 75 12K 12K 78643K 949 0 UVM aobj 2 2K 2K 78643K 2 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 7 0K 0K 78643K 7 0 temp 29 3853K 3917K 78643K 1868 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 4 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 3 1 0 1 1 0 8 0 unpcb 120 29 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 296 34 0 28 1 0 1 1 0 8 0 nd6 48 3 0 0 1 0 1 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 11 0 0 1 0 1 1 0 8 0 pfstkey 112 11 0 0 1 0 1 1 0 8 0 pfstate 328 11 0 0 1 0 1 1 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 144 0 2 9 0 9 9 0 8 0 art_table 32 145 0 2 2 0 2 2 0 8 0 art_node 16 33 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1424 0 22 88 0 88 88 0 8 0 ffsino 272 1424 0 22 94 0 94 94 0 8 0 nchpl 144 1643 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1434 0 0 27 0 27 27 0 8 0 vnodes 208 1434 0 0 76 0 76 76 0 8 0 namei 1024 4231 0 4231 2 1 1 1 0 8 1 percpumem 16 31 0 0 1 0 1 1 0 8 0 scxspl 192 4597 0 4597 8 1 7 7 0 8 7 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 424 241 0 212 4 0 4 4 0 8 0 knotepl 112 47 0 38 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 48 77 0 71 2 1 1 1 0 8 0 pipepl 120 154 0 143 2 1 1 1 0 8 0 fdescpl 496 226 0 212 3 0 3 3 0 8 0 filepl 152 1117 0 1061 3 0 3 3 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 62 0 53 1 0 1 1 0 8 0 zombiepl 144 213 0 212 2 1 1 1 0 8 0 processpl 984 241 0 212 5 0 5 5 0 8 1 procpl 624 250 0 212 4 0 4 4 0 8 1 sockpl 400 80 0 62 2 0 2 2 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 76 0 0 10 0 10 10 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 100 0 0 6 0 6 6 0 8 0 bufpl 280 3048 0 132 209 0 209 209 0 8 0 anonpl 16 22248 0 20624 14 2 12 12 0 124 4 amapchunkpl 152 807 0 741 4 0 4 4 0 158 1 amappl16 192 149 0 118 2 0 2 2 0 8 0 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 33 0 27 1 0 1 1 0 8 0 amappl13 168 22 0 20 2 1 1 1 0 8 0 amappl12 160 8 0 6 2 1 1 1 0 8 0 amappl11 152 54 0 39 1 0 1 1 0 8 0 amappl10 144 18 0 15 1 0 1 1 0 8 0 amappl9 136 233 0 232 1 0 1 1 0 8 0 amappl8 128 268 0 261 1 0 1 1 0 8 0 amappl7 120 117 0 104 1 0 1 1 0 8 0 amappl6 112 27 0 24 2 1 1 1 0 8 0 amappl5 104 125 0 111 1 0 1 1 0 8 0 amappl4 96 493 0 466 1 0 1 1 0 8 0 amappl3 88 108 0 100 1 0 1 1 0 8 0 amappl2 80 883 0 824 2 0 2 2 0 8 0 amappl1 72 15153 0 14734 23 5 18 18 0 8 8 amappl 80 476 0 448 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 226 0 212 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 226 0 212 1 0 1 1 0 8 0 vmmpekpl 168 6400 0 6373 2 0 2 2 0 8 0 vmmpepl 168 32463 0 31537 80 8 72 72 0 357 29 vmsppl 368 225 0 212 2 0 2 2 0 8 0 pdppl 4096 459 0 424 6 0 6 6 0 8 1 pvpl 32 113331 0 109335 105 1 104 104 0 265 70 pmappl 232 225 0 212 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 233 0 4 7 0 7 7 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82714ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 _kernel_lock_held() at _kernel_lock_held+0x17 sys/kern/kern_lock.c:75 msleep(ffffffff826e6ec0,ffffffff826e6ed8,20,ffffffff8242a08d,0) at msleep+0x175 sys/kern/kern_synch.c:231 taskq_next_work(ffffffff826e6ec0,ffff800020da3dc8) at taskq_next_work+0x8d sys/kern/kern_task.c:394 taskq_thread(ffffffff826e6ec0) at taskq_thread+0x135 sys/kern/kern_task.c:434 end trace frame: 0x0, count: 8 ddb{0}> trace x86_ipi_db(ffffffff82714ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 _kernel_lock_held() at _kernel_lock_held+0x17 sys/kern/kern_lock.c:75 msleep(ffffffff826e6ec0,ffffffff826e6ed8,20,ffffffff8242a08d,0) at msleep+0x175 sys/kern/kern_synch.c:231 taskq_next_work(ffffffff826e6ec0,ffff800020da3dc8) at taskq_next_work+0x8d sys/kern/kern_task.c:394 taskq_thread(ffffffff826e6ec0) at taskq_thread+0x135 sys/kern/kern_task.c:434 end trace frame: 0x0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823ffba7) at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff828b7610) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828b7610) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828b7610,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,1) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 rtm_msg1(2,ffff800020ed7690) at rtm_msg1+0x6e sys/net/rtsock.c:1534 rtm_send(fffffd806f37b150,2,0,0) at rtm_send+0x120 rtm_miss sys/net/rtsock.c:1679 [inline] rtm_send(fffffd806f37b150,2,0,0) at rtm_send+0x120 sys/net/rtsock.c:1657 rt_ifa_del(ffff800000aa2d00,200404,ffff800000aa2d58,0) at rt_ifa_del+0x3bb sys/net/route.c:1190 rt_ifa_dellocal(ffff800000aa2d00) at rt_ifa_dellocal+0x149 sys/net/route.c:1290 in_purgeaddr(ffff800000aa2d00) at in_purgeaddr+0x12a sys/netinet/in.c:755 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1142 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:480 end trace frame: 0xffff800020ed7b80, count: 0 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823ffba7) at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff828b7610) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828b7610) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828b7610,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,1) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 rtm_msg1(2,ffff800020ed7690) at rtm_msg1+0x6e sys/net/rtsock.c:1534 rtm_send(fffffd806f37b150,2,0,0) at rtm_send+0x120 rtm_miss sys/net/rtsock.c:1679 [inline] rtm_send(fffffd806f37b150,2,0,0) at rtm_send+0x120 sys/net/rtsock.c:1657 rt_ifa_del(ffff800000aa2d00,200404,ffff800000aa2d58,0) at rt_ifa_del+0x3bb sys/net/route.c:1190 rt_ifa_dellocal(ffff800000aa2d00) at rt_ifa_dellocal+0x149 sys/net/route.c:1290 in_purgeaddr(ffff800000aa2d00) at in_purgeaddr+0x12a sys/netinet/in.c:755 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1142 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:480 spec_close(ffff800020ed7b90) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e8d25b8,7,fffffd807f7bf780,ffff800020ddcc38) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806cf6cd20,ffff800020ddcc38) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cf6cd20,ffff800020ddcc38) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806cf6cd20,ffff800020ddcc38) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806cf6cd20,ffff800020ddcc38) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020ddcc38) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020ddcc38,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020ddcc38,9) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020ddcc38,9) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020ddcc38) at userret+0x199 sys/kern/kern_sig.c:1872 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffe6dc0, count: -24 ddb{1}>