panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd806f175900+16 0x0!=0x839845ffefb49189 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821f8a70) at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff826636d0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff826636d0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff826636d0,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806f2df900,0,3b9aca00,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806f2df900,0,3b9aca00,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 rtm_sendup(fffffd806f6df320,fffffd806f2df900,1) at rtm_sendup+0x5f sys/net/rtsock.c:588 route_input(fffffd806f2df900,0,2) at route_input+0x1cc sys/net/rtsock.c:560 rtm_addr(d,ffff800000a0df00) at rtm_addr+0x10b sys/net/rtsock.c:1751 rt_ifa_del(ffff800000a0df00,200404,ffff800000a0df58,0) at rt_ifa_del+0x3ed sys/net/route.c:1192 rt_ifa_dellocal(ffff800000a0df00) at rt_ifa_dellocal+0x149 sys/net/route.c:1290 in_purgeaddr(ffff800000a0df00) at in_purgeaddr+0x12a sys/netinet/in.c:755 in_ifdetach(ffff8000009d6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff8000009d6000) at if_detach+0x140 sys/net/if.c:1149 tun_clone_destroy(ffff8000009d6000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329 end trace frame: 0xffff800020f61640, 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 0xfffffd806f175900+16 0x0!=0x839845ffefb49189 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821f8a70) at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff826636d0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff826636d0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff826636d0,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806f2df900,0,3b9aca00,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806f2df900,0,3b9aca00,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 rtm_sendup(fffffd806f6df320,fffffd806f2df900,1) at rtm_sendup+0x5f sys/net/rtsock.c:588 route_input(fffffd806f2df900,0,2) at route_input+0x1cc sys/net/rtsock.c:560 rtm_addr(d,ffff800000a0df00) at rtm_addr+0x10b sys/net/rtsock.c:1751 rt_ifa_del(ffff800000a0df00,200404,ffff800000a0df58,0) at rt_ifa_del+0x3ed sys/net/route.c:1192 rt_ifa_dellocal(ffff800000a0df00) at rt_ifa_dellocal+0x149 sys/net/route.c:1290 in_purgeaddr(ffff800000a0df00) at in_purgeaddr+0x12a sys/netinet/in.c:755 in_ifdetach(ffff8000009d6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff8000009d6000) at if_detach+0x140 sys/net/if.c:1149 tun_clone_destroy(ffff8000009d6000) 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(ffff800020f616c0) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd807d1b8278,7,fffffd807f7bfa80,ffff800020e6c278) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806d0baa28,ffff800020e6c278) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806d0baa28,ffff800020e6c278) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806d0baa28,ffff800020e6c278) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd806d0baa28,ffff800020e6c278) at closef+0x11c sys/kern/kern_descrip.c:1260 fdfree(ffff800020e6c278) at fdfree+0x101 sys/kern/kern_descrip.c:1192 exit1(ffff800020e6c278,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020e6c278,9) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020e6c278,9) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020e6c278) at userret+0x199 sys/kern/kern_sig.c:1867 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff4060, count: -25 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020f60e60 rbx 0xffff800020f60f10 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff812e6c3f kprintf+0x16f r9 0x1 r10 0x4860fd09718b6904 r11 0x399eec08172055d8 r12 0x3000000008 r13 0xffff800020f60e70 r14 0x100 r15 0x1 rip 0xffffffff81078cb8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020f60e50 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=173371 stat=onproc flags process=a proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e6c008,0xffff800020e6c4f8 process=0xffff800020e80f70 user=0xffff800020f5c000, vmspace=0xfffffd807f000b80 estcpu=36, cpticks=4, pctcpu=0.0 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 25591 448666 55413 0 3 0x82 wait syz-execprog 25591 147654 55413 0 3 0x4000082 thrsleep syz-execprog 25591 81013 55413 0 3 0x4000082 thrsleep syz-execprog 25591 70727 55413 0 3 0x4000082 kqread syz-execprog 25591 166615 55413 0 3 0x4000082 thrsleep syz-execprog 25591 195312 55413 0 3 0x4000082 thrsleep syz-execprog 25591 369932 55413 0 3 0x4000082 thrsleep syz-execprog 25591 280811 55413 0 3 0x4000082 thrsleep syz-execprog 25591 361735 55413 0 3 0x4000082 thrsleep syz-execprog 55413 345117 3827 0 3 0x10008a pause ksh 3827 216057 6236 0 3 0x92 select sshd 9868 339582 1 0 3 0x100083 ttyin getty 6236 488590 1 0 3 0x80 select sshd 6189 129925 71590 74 3 0x100092 bpf pflogd 71590 380468 1 0 3 0x80 netio pflogd 67852 70134 2077 73 3 0x100090 kqread syslogd 2077 277049 1 0 3 0x100082 netio syslogd 7859 222280 1 77 3 0x100090 poll dhclient 452 376161 1 0 3 0x80 poll dhclient 19124 91040 0 0 3 0x14200 bored smr 73896 6021 0 0 3 0x14200 pgzero zerothread 79835 110769 0 0 3 0x14200 aiodoned aiodoned 82041 423093 0 0 3 0x14200 syncer update 74085 305726 0 0 3 0x14200 cleaner cleaner 37648 69398 0 0 3 0x14200 reaper reaper 52905 437347 0 0 3 0x14200 pgdaemon pagedaemon 56444 428272 0 0 3 0x14200 bored crynlk 2887 331816 0 0 3 0x14200 bored crypto 1018 255541 0 0 3 0x40014200 acpi0 acpi0 14354 378450 0 0 3 0x40014200 idle1 88819 58211 0 0 3 0x14200 bored softnet 64365 33550 0 0 3 0x14200 bored systqmp 48326 384666 0 0 3 0x14200 bored systq 88131 75566 0 0 3 0x40014200 bored softclock 55637 74827 0 0 7 0x40014200 idle0 1 432326 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks 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 73 12K 12K 78643K 950 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 3033K 3097K 78643K 1867 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 1 0 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 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 10 0 0 1 0 1 1 0 8 0 pfstkey 112 10 0 0 1 0 1 1 0 8 0 pfstate 328 10 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 1640 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 4205 0 4205 1 0 1 1 0 8 1 percpumem 16 31 0 0 1 0 1 1 0 8 0 scxspl 192 3822 0 3822 2 1 1 2 0 8 1 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 1 0 1 1 0 8 0 pipepl 120 154 0 143 1 0 1 1 0 8 0 fdescpl 496 226 0 212 3 0 3 3 0 8 0 filepl 152 1110 0 1054 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 1 0 1 1 0 8 0 processpl 984 241 0 212 5 0 5 5 0 8 1 procpl 624 249 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 80 0 0 10 0 10 10 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 97 0 0 7 0 7 7 0 8 0 bufpl 280 2981 0 133 204 0 204 204 0 8 0 anonpl 16 22334 0 20712 13 1 12 12 0 124 3 amapchunkpl 152 863 0 798 4 0 4 4 0 158 0 amappl16 192 145 0 119 2 0 2 2 0 8 0 amappl15 184 3 0 2 2 1 1 1 0 8 0 amappl14 176 32 0 26 1 0 1 1 0 8 0 amappl13 168 20 0 19 1 0 1 1 0 8 0 amappl12 160 16 0 14 2 1 1 1 0 8 0 amappl11 152 54 0 38 1 0 1 1 0 8 0 amappl10 144 21 0 17 1 0 1 1 0 8 0 amappl9 136 233 0 232 1 0 1 1 0 8 0 amappl8 128 271 0 262 1 0 1 1 0 8 0 amappl7 120 114 0 103 1 0 1 1 0 8 0 amappl6 112 24 0 21 1 0 1 1 0 8 0 amappl5 104 126 0 112 1 0 1 1 0 8 0 amappl4 96 497 0 469 1 0 1 1 0 8 0 amappl3 88 106 0 100 1 0 1 1 0 8 0 amappl2 80 901 0 843 2 0 2 2 0 8 0 amappl1 72 15482 0 15060 23 5 18 18 0 8 8 amappl 80 478 0 450 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 6368 0 6344 2 0 2 2 0 8 0 vmmpepl 168 32590 0 31664 77 5 72 72 0 357 29 vmsppl 368 225 0 212 2 0 2 2 0 8 0 pdppl 4096 460 0 424 6 0 6 6 0 8 0 pvpl 32 113737 0 109764 104 0 104 104 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 3 7 0 7 7 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff824d8ff0) 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 __mp_lock(ffffffff8265c780) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8265c780) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x331 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffffffff824d8ff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff824d8ff0) 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 __mp_lock(ffffffff8265c780) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8265c780) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x331 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffffffff824d8ff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -8 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(ffffffff821f8a70) at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff826636d0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff826636d0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff826636d0,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806f2df900,0,3b9aca00,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806f2df900,0,3b9aca00,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 rtm_sendup(fffffd806f6df320,fffffd806f2df900,1) at rtm_sendup+0x5f sys/net/rtsock.c:588 route_input(fffffd806f2df900,0,2) at route_input+0x1cc sys/net/rtsock.c:560 rtm_addr(d,ffff800000a0df00) at rtm_addr+0x10b sys/net/rtsock.c:1751 rt_ifa_del(ffff800000a0df00,200404,ffff800000a0df58,0) at rt_ifa_del+0x3ed sys/net/route.c:1192 rt_ifa_dellocal(ffff800000a0df00) at rt_ifa_dellocal+0x149 sys/net/route.c:1290 in_purgeaddr(ffff800000a0df00) at in_purgeaddr+0x12a sys/netinet/in.c:755 in_ifdetach(ffff8000009d6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff8000009d6000) at if_detach+0x140 sys/net/if.c:1149 tun_clone_destroy(ffff8000009d6000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329 end trace frame: 0xffff800020f61640, count: 0 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821f8a70) at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff826636d0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff826636d0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff826636d0,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806f2df900,0,3b9aca00,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806f2df900,0,3b9aca00,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 rtm_sendup(fffffd806f6df320,fffffd806f2df900,1) at rtm_sendup+0x5f sys/net/rtsock.c:588 route_input(fffffd806f2df900,0,2) at route_input+0x1cc sys/net/rtsock.c:560 rtm_addr(d,ffff800000a0df00) at rtm_addr+0x10b sys/net/rtsock.c:1751 rt_ifa_del(ffff800000a0df00,200404,ffff800000a0df58,0) at rt_ifa_del+0x3ed sys/net/route.c:1192 rt_ifa_dellocal(ffff800000a0df00) at rt_ifa_dellocal+0x149 sys/net/route.c:1290 in_purgeaddr(ffff800000a0df00) at in_purgeaddr+0x12a sys/netinet/in.c:755 in_ifdetach(ffff8000009d6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff8000009d6000) at if_detach+0x140 sys/net/if.c:1149 tun_clone_destroy(ffff8000009d6000) 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(ffff800020f616c0) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd807d1b8278,7,fffffd807f7bfa80,ffff800020e6c278) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806d0baa28,ffff800020e6c278) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806d0baa28,ffff800020e6c278) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806d0baa28,ffff800020e6c278) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd806d0baa28,ffff800020e6c278) at closef+0x11c sys/kern/kern_descrip.c:1260 fdfree(ffff800020e6c278) at fdfree+0x101 sys/kern/kern_descrip.c:1192 exit1(ffff800020e6c278,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020e6c278,9) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020e6c278,9) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020e6c278) at userret+0x199 sys/kern/kern_sig.c:1867 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff4060, count: -25 ddb{1}>