ukernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807efffa10, 0xb, 0, 1) -> e in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800021ecfe10, count: 0 ddb{1}> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b1c600) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021ecfff0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e2704e8,7,fffffd807f7bf900,ffff800021f5e030) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067dfdad0,ffff800021f5e030) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067dfdad0,ffff800021f5e030) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067dfdad0,ffff800021f5e030) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067dfdad0,ffff800021f5e030) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021f5e030) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800021f5e030,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800021f5e030,ffff800021ed0280,ffff800021ed02d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021ed0350) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021ed0350) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffed8f0, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800021ecfdc0 rbx 0 rdx 0 rcx 0 rax 0xffff800021f5e030 r8 0xffff800000b1c600 r9 0xffffffff821cd043 rt_ifa_purge+0x153 r10 0x5 r11 0xbec7436c2f427b30 r12 0 r13 0x3 r14 0xffffffffffffffff r15 0x1 rip 0xffffffff821c82ed in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021ecfd60 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.1) pid=461268 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021f5fb58,0xffff800021f5e530 process=0xffff800021f443f8 user=0xffff800021ecb000, vmspace=0xfffffd807efffa10 estcpu=36, cpticks=13, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 48485 360042 0 0 3 0x14280 nfsidl nfsio 90355 308386 0 0 3 0x14280 nfsidl nfsio 7786 257610 0 0 3 0x14280 nfsidl nfsio 44282 310051 0 0 3 0x14280 nfsidl nfsio 20512 23422 0 0 3 0x14280 nfsidl nfsio 55744 301428 0 0 3 0x14280 nfsidl nfsio 49803 506975 0 0 3 0x14280 nfsidl nfsio 52807 285328 0 0 3 0x14280 nfsidl nfsio 81049 394723 0 0 3 0x14280 nfsidl nfsio 15851 63769 0 0 3 0x14280 nfsidl nfsio 50462 423091 0 0 3 0x14280 nfsidl nfsio 14763 290260 0 0 3 0x14280 nfsidl nfsio 20921 129837 0 0 3 0x14280 nfsidl nfsio 3040 271695 0 0 3 0x14280 nfsidl nfsio 77116 307407 0 0 3 0x14280 nfsidl nfsio 88752 499822 0 0 3 0x14280 nfsidl nfsio 77197 303064 0 0 3 0x14280 nfsidl nfsio 16099 488110 0 0 3 0x14280 nfsidl nfsio 24469 60330 0 0 3 0x14280 nfsidl nfsio 80644 27290 0 0 3 0x14280 nfsidl nfsio 79216 116359 0 0 3 0x14200 bored sosplice 15630 65614 95115 0 3 0x82 thrsleep syz-fuzzer 15630 404189 95115 0 2 0x4000002 syz-fuzzer 15630 509443 95115 0 3 0x4000082 thrsleep syz-fuzzer 15630 132194 95115 0 3 0x4000082 thrsleep syz-fuzzer 15630 521987 95115 0 2 0x4000002 syz-fuzzer 15630 273550 95115 0 2 0x4000002 syz-fuzzer 15630 246251 95115 0 3 0x4000082 thrsleep syz-fuzzer 15630 271427 95115 0 2 0x4000002 syz-fuzzer 95115 355676 38502 0 3 0x10008a pause ksh 38502 420 91483 0 3 0x92 select sshd 8833 186107 1 0 3 0x100083 ttyin getty 91483 245415 1 0 3 0x80 select sshd 69815 112541 7710 74 3 0x100092 bpf pflogd 7710 326676 1 0 3 0x80 netio pflogd 51982 509105 31668 73 3 0x100090 kqread syslogd 31668 492544 1 0 3 0x100082 netio syslogd 96082 241356 1 77 2 0x100090 dhclient 22957 277672 1 0 3 0x80 poll dhclient 29234 435772 0 0 3 0x14200 bored smr 98737 43642 0 0 2 0x14200 zerothread 5156 375097 0 0 3 0x14200 aiodoned aiodoned 32920 146629 0 0 3 0x14200 syncer update 81855 457919 0 0 3 0x14200 cleaner cleaner 77180 350468 0 0 3 0x14200 reaper reaper 43614 108100 0 0 3 0x14200 pgdaemon pagedaemon 86075 334351 0 0 3 0x14200 bored crynlk 82960 423819 0 0 3 0x14200 bored crypto 79948 294901 0 0 3 0x40014200 acpi0 acpi0 55188 46555 0 0 3 0x40014200 idle1 18288 4940 0 0 3 0x14200 bored softnet 2625 185933 0 0 2 0x14200 systqmp 65432 500216 0 0 3 0x14200 bored systq 78559 217089 0 0 3 0x40014200 bored softclock 7664 20171 0 0 3 0x40014200 idle0 1 437728 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 9502 6409K 6854K 78643K 10867 0 pcb 13 8K 8K 78643K 50 0 rtable 100 3K 7K 78643K 286 0 ifaddr 63 13K 13K 78643K 91 0 counters 43 33K 34K 78643K 45 0 ioctlops 0 0K 4K 78643K 1610 0 iov 0 0K 12K 78643K 23 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1340 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 19 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 255 0 proc 61 63K 95K 78643K 459 0 subproc 14 0K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 22 0 in_multi 43 2K 2K 78643K 70 0 ether_multi 1 0K 0K 78643K 3 0 mrt 0 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 216 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 195 30K 31K 78643K 1826 0 UVM aobj 14 2K 2K 78643K 14 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 30 0 NDP 10 0K 0K 78643K 18 0 temp 91 3861K 3926K 78643K 3510 0 kqueue 3 4K 8K 78643K 5 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 6 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 29 0 27 1 0 1 1 0 8 0 rtentry 112 59 0 19 2 0 2 2 0 8 0 unpcb 120 135 0 125 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 926 0 926 1 1 0 1 0 8 0 tcpcb 592 152 0 140 5 3 2 3 0 8 0 inpcb 296 385 0 378 4 2 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 14 0 8 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 1 0 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 pfrktable 1344 19 0 19 2 2 0 1 0 8 0 pftag 88 3 0 2 1 0 1 1 0 8 0 pfqueue 264 2 0 2 1 1 0 1 0 8 0 pfstitem 24 20 0 18 1 0 1 1 0 8 0 pfstkey 112 20 0 18 1 0 1 1 0 8 0 pfstate 328 20 0 18 2 1 1 2 0 8 0 pfrule 1360 27 0 20 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 247 0 59 14 1 13 13 0 8 1 art_table 32 248 0 59 2 0 2 2 0 8 0 art_node 16 58 0 18 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 13 0 3 1 0 1 1 0 8 0 shmpl 112 11 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1722 0 323 89 0 89 89 0 8 1 ffsino 272 1722 0 323 95 1 94 94 0 8 0 nchpl 144 2259 0 675 60 0 60 60 0 8 0 uvmvnodes 72 1840 0 0 34 0 34 34 0 8 0 vnodes 208 1840 0 0 97 0 97 97 0 8 0 namei 1024 6689 0 6689 3 2 1 1 0 8 1 percpumem 16 33 0 1 1 0 1 1 0 8 0 vmpool 560 1 0 1 1 1 0 1 0 8 0 pfiaddrpl 120 5 0 5 2 2 0 1 0 8 0 scxspl 200 6595 0 6595 6 5 1 5 0 8 1 plimitpl 152 28 0 20 1 0 1 1 0 8 0 sigapl 424 491 0 440 6 0 6 6 0 8 0 futexpl 56 3001 0 3001 2 1 1 1 0 8 1 knotepl 112 64 0 56 1 0 1 1 0 8 0 kqueuepl 152 25 0 23 1 0 1 1 0 8 0 pipepl 304 109 0 104 4 2 2 2 0 8 1 fdescpl 496 455 0 440 3 0 3 3 0 8 0 filepl 152 2953 0 2881 6 1 5 5 0 8 0 lockfpl 104 47 0 46 1 0 1 1 0 8 0 lockfspl 48 20 0 19 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 686 0 676 1 0 1 1 0 8 0 zombiepl 144 442 0 440 3 2 1 1 0 8 0 processpl 1008 491 0 440 8 1 7 7 0 8 0 procpl 632 992 0 934 7 1 6 6 0 8 0 sosppl 144 2 0 2 1 1 0 1 0 8 0 sockpl 400 549 0 530 7 3 4 4 0 8 2 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 365 0 0 45 0 45 45 0 8 0 mtagpl 96 16 0 0 1 0 1 1 0 8 0 mbufpl 256 372 0 0 23 0 23 23 0 8 0 bufpl 280 3687 0 127 255 0 255 255 0 8 0 anonpl 16 65475 0 49224 91 16 75 85 0 124 0 amapchunkpl 152 2885 0 2542 25 10 15 19 0 158 0 amappl16 192 1978 0 1182 49 8 41 49 0 8 0 amappl15 184 10 0 8 1 0 1 1 0 8 0 amappl14 176 8 0 4 1 0 1 1 0 8 0 amappl13 168 142 0 138 1 0 1 1 0 8 0 amappl12 160 133 0 128 1 0 1 1 0 8 0 amappl11 152 55 0 40 1 0 1 1 0 8 0 amappl10 144 18 0 13 1 0 1 1 0 8 0 amappl9 136 351 0 349 1 0 1 1 0 8 0 amappl8 128 502 0 441 3 0 3 3 0 8 0 amappl7 120 117 0 104 1 0 1 1 0 8 0 amappl6 112 29 0 23 1 0 1 1 0 8 0 amappl5 104 608 0 589 1 0 1 1 0 8 0 amappl4 96 493 0 465 1 0 1 1 0 8 0 amappl3 88 130 0 121 1 0 1 1 0 8 0 amappl2 80 2813 0 2739 2 0 2 2 0 8 0 amappl1 72 22193 0 21703 23 13 10 17 0 8 0 amappl 80 1285 0 1189 3 0 3 3 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 13 0 0 1 0 1 1 0 8 0 uaddrrnd 24 456 0 441 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 456 0 441 1 0 1 1 0 8 0 vmmpekpl 168 7246 0 7210 2 0 2 2 0 8 0 vmmpepl 168 64676 0 62622 131 35 96 110 0 357 3 vmsppl 368 455 0 441 2 0 2 2 0 8 0 pdppl 4096 919 0 882 7 1 6 6 0 8 0 pvpl 32 201090 0 181564 212 31 181 196 0 265 5 pmappl 232 455 0 441 3 2 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 298 0 12 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff827b8ff0) 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 __sanitizer_cov_trace_cmp4(a1797,a1798) at __sanitizer_cov_trace_cmp4+0x2c __mp_lock(ffffffff828c5a80) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c5a80) at __mp_lock+0x139 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828c5a80,2) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800021f6b3f8,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 cond_wait(ffff800021f6b478,ffffffff82401705) at cond_wait+0x76 sys/kern/kern_synch.c:907 smr_barrier_impl(0) at smr_barrier_impl+0xf9 sys/kern/kern_smr.c:271 tun_clone_destroy(ffff800000af7000) at tun_clone_destroy+0x136 sys/net/if_tun.c:311 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021f6b5e0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e270688,7,fffffd807f7bf900,ffff800021f5e520) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067da8ed8,ffff800021f5e520) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067da8ed8,ffff800021f5e520) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067da8ed8,ffff800021f5e520) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067da8ed8,ffff800021f5e520) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021f5e520) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800021f5e520,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800021f5e520,ffff800021f6b870,ffff800021f6b8c0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021f6b940) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f6b940) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6cd0, count: -22 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b1c600) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021ecfff0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e2704e8,7,fffffd807f7bf900,ffff800021f5e030) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067dfdad0,ffff800021f5e030) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067dfdad0,ffff800021f5e030) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067dfdad0,ffff800021f5e030) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067dfdad0,ffff800021f5e030) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021f5e030) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800021f5e030,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800021f5e030,ffff800021ed0280,ffff800021ed02d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021ed0350) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021ed0350) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffed8f0, count: -16