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(0xfffffd806e907e68, 0x81000b, 0, 1) -> e in_delmulti(80ffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800023f2f100, count: 0 ddb{1}> trace in_delmulti(80ffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b66600) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000afc800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000afc800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000afc800) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800023f2f2e0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ed04688,7,fffffd807f7bf7e0,ffff800020e03018) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8064676578,ffff800020e03018) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8064676578,ffff800020e03018) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8064676578,ffff800020e03018) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8064676578,ffff800020e03018) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e03018) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e03018,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e03018,ffff800023f2f570,ffff800023f2f5c0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023f2f640) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f2f640) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0140, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800023f2f0b0 rbx 0 rdx 0 rcx 0 rax 0xffff800020e03018 r8 0xffff800000b66600 r9 0xffffffff81968e83 rt_ifa_purge+0x153 r10 0x5 r11 0x582bb75e51d328b6 r12 0 r13 0x8da1216f __kernel_virt_to_phys+0xda1216f r14 0x80ffff acpi_pdirpa+0x7fbe67 r15 0x1 rip 0xffffffff819aa3cd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023f2f050 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=47342 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e034f8,0xffffffff828f12a8 process=0xffff800020df1750 user=0xffff800023f2a000, vmspace=0xfffffd806e907e68 estcpu=36, cpticks=9, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 22221 483278 1 0 3 0x100083 ttyopn getty 95674 524274 0 0 3 0x14280 nfsidl nfsio 33697 214673 0 0 3 0x14280 nfsidl nfsio 20770 122994 0 0 3 0x14280 nfsidl nfsio 8014 375942 0 0 3 0x14280 nfsidl nfsio 78228 244068 0 0 3 0x14280 nfsidl nfsio 52029 153486 0 0 3 0x14280 nfsidl nfsio 35497 399109 0 0 3 0x14280 nfsidl nfsio 19938 104388 0 0 3 0x14280 nfsidl nfsio 29580 208379 0 0 3 0x14280 nfsidl nfsio 20046 279031 0 0 3 0x14280 nfsidl nfsio 16078 379860 0 0 3 0x14280 nfsidl nfsio 52466 112391 0 0 3 0x14280 nfsidl nfsio 5145 410903 0 0 3 0x14280 nfsidl nfsio 73299 159008 0 0 3 0x14280 nfsidl nfsio 98092 197991 0 0 3 0x14280 nfsidl nfsio 61669 141607 0 0 3 0x14280 nfsidl nfsio 46795 78009 0 0 3 0x14280 nfsidl nfsio 93097 315924 0 0 3 0x14280 nfsidl nfsio 26880 32721 0 0 3 0x14280 nfsidl nfsio 33136 61911 0 0 3 0x14280 nfsidl nfsio 16506 433171 0 0 3 0x14200 bored sosplice 14206 72579 93280 0 3 0x82 piperd syz-executor.1 93280 230385 62125 0 3 0x82 thrsleep syz-fuzzer 93280 445202 62125 0 3 0x4000082 nanosleep syz-fuzzer 93280 371602 62125 0 3 0x4000082 kqread syz-fuzzer 93280 248758 62125 0 3 0x4000082 thrsleep syz-fuzzer 93280 71756 62125 0 3 0x4000082 thrsleep syz-fuzzer 93280 223849 62125 0 2 0x4000002 syz-fuzzer 93280 448021 62125 0 3 0x4000082 thrsleep syz-fuzzer 93280 300025 62125 0 7 0x4000002 syz-fuzzer 62125 422472 23491 0 3 0x10008a pause ksh 23491 347484 3233 0 3 0x92 select sshd 3233 261989 1 0 3 0x80 select sshd 4345 423291 46421 74 3 0x100092 bpf pflogd 46421 256617 1 0 3 0x80 netio pflogd 14490 34319 70137 73 3 0x100090 kqread syslogd 70137 133934 1 0 3 0x100082 netio syslogd 21173 439627 1 77 2 0x100090 dhclient 39021 321585 1 0 3 0x80 poll dhclient 71389 119991 0 0 3 0x14200 bored smr 47800 140856 0 0 3 0x14200 pgzero zerothread 75996 408874 0 0 3 0x14200 aiodoned aiodoned 43913 298107 0 0 3 0x14200 syncer update 20793 107141 0 0 3 0x14200 cleaner cleaner 62123 377332 0 0 3 0x14200 reaper reaper 66035 143914 0 0 3 0x14200 pgdaemon pagedaemon 93034 433165 0 0 3 0x14200 bored crynlk 6321 337951 0 0 3 0x14200 bored crypto 27034 240132 0 0 3 0x40014200 acpi0 acpi0 51583 134613 0 0 3 0x40014200 idle1 51937 4300 0 0 3 0x14200 bored softnet 1769 196716 0 0 2 0x14200 systqmp 23171 515659 0 0 3 0x14200 bored systq 78866 99212 0 0 3 0x40014200 bored softclock 30466 423116 0 0 3 0x40014200 idle0 1 232771 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 9526 6426K 6788K 78643K 11768 0 pcb 13 8K 8K 78643K 181 0 rtable 102 11K 12K 78643K 808 0 ifaddr 91 18K 19K 78643K 292 0 counters 43 33K 34K 78643K 89 0 ioctlops 0 0K 4K 78643K 1679 0 iov 0 0K 16K 78643K 88 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1709 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 22 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 190 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 1226 0 sigio 0 0K 0K 78643K 22 0 proc 62 63K 95K 78643K 724 0 subproc 23 1K 2K 78643K 102 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 113 0 in_multi 50 2K 3K 78643K 274 0 ether_multi 1 0K 0K 78643K 25 0 mrt 0 0K 0K 78643K 18 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 343 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 196 95K 109K 78643K 5014 0 UVM aobj 62 7K 7K 78643K 88 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 147 0 NDP 13 0K 0K 78643K 63 0 temp 144 3878K 3954K 78643K 29282 0 kqueue 3 4K 22K 78643K 63 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 17 0 13 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 95 0 93 1 0 1 1 0 8 0 rtentry 112 146 0 122 2 0 2 2 0 8 0 unpcb 120 536 0 524 1 0 1 1 0 8 0 syncache 264 11 0 11 5 4 1 1 0 8 1 tcpqe 32 553 0 553 2 2 0 1 0 8 0 tcpcb 544 1380 0 1372 6 4 2 4 0 8 1 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 2 0 2 1 1 0 1 0 8 0 inpcb 296 2663 0 2656 4 2 2 3 0 8 1 rttmr 72 7 0 7 6 5 1 1 0 8 1 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 48 43 0 40 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 3 0 1 0 8 0 ppxss 1136 6 0 6 3 3 0 1 0 8 0 pfstscr 40 2 0 1 1 0 1 1 0 8 0 pffrag 232 6 0 4 3 2 1 1 0 482 0 pffrnode 88 6 0 4 3 2 1 1 0 8 0 pffrent 40 13 0 11 3 2 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 pfrktable 1344 75 0 60 6 4 2 2 0 8 0 pftag 88 5 0 4 3 2 1 1 0 8 0 pfqueue 264 2 0 0 1 0 1 1 0 8 0 pfstitem 24 20 0 16 1 0 1 1 0 8 0 pfstkey 112 22 0 18 1 0 1 1 0 8 0 pfstate 328 20 0 17 2 0 2 2 0 8 0 pfrule 1360 63 0 36 4 1 3 3 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 659 0 515 19 8 11 16 0 8 0 art_table 32 661 0 515 3 0 3 3 0 8 0 art_node 16 145 0 122 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 10 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 185 0 175 1 0 1 1 0 8 0 shmpl 112 85 0 26 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2933 0 1533 88 0 88 88 0 8 0 ffsino 272 2933 0 1533 94 0 94 94 0 8 0 nchpl 144 4857 0 3281 60 0 60 60 0 8 0 uvmvnodes 72 3311 0 0 61 0 61 61 0 8 0 vnodes 208 3311 0 0 175 0 175 175 0 8 0 namei 1024 14318 0 14318 2 1 1 1 0 8 1 percpumem 16 55 0 23 1 0 1 1 0 8 0 vcpupl 1984 8 0 1 1 0 1 1 0 8 0 vmpool 560 11 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 27 0 15 1 0 1 1 0 8 0 scsiplug 64 6 0 6 4 4 0 1 0 8 0 scxspl 192 14841 0 14841 9 8 1 7 0 8 1 plimitpl 152 72 0 64 1 0 1 1 0 8 0 sigapl 424 1451 0 1400 6 0 6 6 0 8 0 futexpl 56 17185 0 17185 2 1 1 1 0 8 1 knotepl 112 271 0 257 3 2 1 2 0 8 0 kqueuepl 144 148 0 145 1 0 1 1 0 8 0 pipepl 304 227 0 219 3 1 2 2 0 8 1 fdescpl 496 1415 0 1400 3 0 3 3 0 8 0 filepl 152 9038 0 8951 6 1 5 6 0 8 0 lockfpl 104 282 0 281 1 0 1 1 0 8 0 lockfspl 48 93 0 92 1 0 1 1 0 8 0 sessionpl 112 23 0 12 1 0 1 1 0 8 0 pgrppl 48 105 0 94 1 0 1 1 0 8 0 ucredpl 96 1321 0 1311 1 0 1 1 0 8 0 zombiepl 144 1401 0 1400 2 1 1 1 0 8 0 processpl 992 1451 0 1400 8 1 7 7 0 8 0 procpl 624 3961 0 3903 6 1 5 6 0 8 0 sosppl 128 24 0 24 4 3 1 1 0 8 1 sockpl 400 3304 0 3283 9 5 4 5 0 8 1 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 11 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 190 0 0 23 0 23 23 0 8 0 mtagpl 96 30 0 0 1 0 1 1 0 8 0 mbufpl 256 307 0 0 16 0 16 16 0 8 0 bufpl 280 6050 0 132 423 0 423 423 0 8 0 anonpl 16 162889 0 144324 101 20 81 83 0 124 4 amapchunkpl 152 9582 0 9055 43 15 28 28 0 158 6 amappl16 192 5897 0 5044 58 14 44 53 0 8 1 amappl15 184 186 0 184 1 0 1 1 0 8 0 amappl14 176 83 0 78 1 0 1 1 0 8 0 amappl13 168 789 0 785 1 0 1 1 0 8 0 amappl12 160 23 0 20 1 0 1 1 0 8 0 amappl11 152 143 0 128 1 0 1 1 0 8 0 amappl10 144 373 0 367 1 0 1 1 0 8 0 amappl9 136 369 0 367 1 0 1 1 0 8 0 amappl8 128 467 0 416 2 0 2 2 0 8 0 amappl7 120 285 0 273 1 0 1 1 0 8 0 amappl6 112 34 0 26 1 0 1 1 0 8 0 amappl5 104 1217 0 1200 1 0 1 1 0 8 0 amappl4 96 1352 0 1323 1 0 1 1 0 8 0 amappl3 88 232 0 223 1 0 1 1 0 8 0 amappl2 80 10372 0 10301 2 0 2 2 0 8 0 amappl1 72 52021 0 51578 23 13 10 18 0 8 0 amappl 80 4335 0 4242 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 87 0 26 1 0 1 1 0 8 0 uaddrrnd 24 1426 0 1404 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1426 0 1404 1 0 1 1 0 8 0 vmmpekpl 168 14322 0 14285 2 0 2 2 0 8 0 vmmpepl 168 190348 0 188308 166 58 108 128 0 357 12 vmsppl 368 1425 0 1404 4 1 3 3 0 8 1 pdppl 4096 2859 0 2815 9 3 6 7 0 8 0 pvpl 32 473439 0 451186 225 29 196 198 0 265 14 pmappl 232 1425 0 1404 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 292 0 26 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82713ff0) 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(123845,123846) at __sanitizer_cov_trace_cmp4+0x40 kd_curproc sys/dev/kcov.c:407 [inline] __sanitizer_cov_trace_cmp4(123845,123846) at __sanitizer_cov_trace_cmp4+0x40 trace_cmp sys/dev/kcov.c:102 [inline] __sanitizer_cov_trace_cmp4(123845,123846) at __sanitizer_cov_trace_cmp4+0x40 sys/dev/kcov.c:131 __mp_lock(ffffffff828ec9f0) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ec9f0) at __mp_lock+0x139 sys/kern/kern_lock.c:147 intr_handler(ffff800020eac0c0,ffff80000065bd80) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge4_untramp() at Xintr_ioapic_edge4_untramp+0x19f end of kernel end trace frame: 0xc000397f20, count: -7 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(80ffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b66600) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000afc800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000afc800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000afc800) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800023f2f2e0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ed04688,7,fffffd807f7bf7e0,ffff800020e03018) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8064676578,ffff800020e03018) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8064676578,ffff800020e03018) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8064676578,ffff800020e03018) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8064676578,ffff800020e03018) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e03018) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e03018,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e03018,ffff800023f2f570,ffff800023f2f5c0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023f2f640) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f2f640) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0140, count: -16