uvm_fault(0xffffffff828b8cf0, 0xffffffff0000000b, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff828b8cf0, 0xffffffff0000000b, 0, 1) -> e in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800020ed1960, count: 0 ddb{0}> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b1af00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac4000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac4000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac4000) 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(ffff800020ed1b40) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e4a55b8,7,fffffd807f7bf960,ffff800020ddcc38) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80669f04e0,ffff800020ddcc38) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80669f04e0,ffff800020ddcc38) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80669f04e0,ffff800020ddcc38) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80669f04e0,ffff800020ddcc38) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020ddcc38) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020ddcc38,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020ddcc38,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020ddcc38,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020ddcc38) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800020ed1fc0) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020ed1fc0) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc43e0, count: -17 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800020ed1910 rbx 0 rdx 0xffff800020ddcc38 rcx 0 rax 0 r8 0xffffffff81636133 rt_ifa_purge+0x153 r9 0x5 r10 0x3 r11 0x947ebb05d53c4faf r12 0 r13 0x3 r14 0xfffffffeffffffff r15 0x1 rip 0xffffffff811e3b6d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020ed18b0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (syz-executor.0) pid=201662 stat=onproc flags process=a proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddcea8,0xffff800020e04888 process=0xffff8000fffff378 user=0xffff800020ecd000, vmspace=0xfffffd807efff450 estcpu=36, cpticks=2, pctcpu=0.4 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 15466 410923 0 0 3 0x14200 acct acct 99012 279321 0 0 3 0x14280 nfsidl nfsio 30433 185471 0 0 3 0x14280 nfsidl nfsio 77930 501573 0 0 3 0x14280 nfsidl nfsio 10747 105349 0 0 3 0x14280 nfsidl nfsio 90054 466193 0 0 3 0x14280 nfsidl nfsio 26455 376054 0 0 3 0x14280 nfsidl nfsio 68334 259264 0 0 3 0x14280 nfsidl nfsio 34092 331865 0 0 3 0x14280 nfsidl nfsio 78458 206448 0 0 3 0x14280 nfsidl nfsio 91563 251261 0 0 3 0x14280 nfsidl nfsio 96701 26500 0 0 3 0x14280 nfsidl nfsio 57763 263462 0 0 3 0x14280 nfsidl nfsio 8498 342525 0 0 3 0x14280 nfsidl nfsio 12073 225045 0 0 3 0x14280 nfsidl nfsio 29775 228700 0 0 3 0x14280 nfsidl nfsio 1426 2478 0 0 3 0x14280 nfsidl nfsio 21409 407437 0 0 3 0x14280 nfsidl nfsio 91451 437976 0 0 3 0x14280 nfsidl nfsio 94768 33493 0 0 3 0x14280 nfsidl nfsio 61274 391976 0 0 3 0x14280 nfsidl nfsio 86596 234247 0 0 3 0x14200 bored sosplice 6738 464442 94895 0 3 0x82 piperd syz-executor.1 94895 53590 86249 0 3 0x82 thrsleep syz-fuzzer 94895 252969 86249 0 3 0x4000082 nanosleep syz-fuzzer 94895 440304 86249 0 3 0x4000082 thrsleep syz-fuzzer 94895 374604 86249 0 7 0x4000002 syz-fuzzer 94895 403267 86249 0 3 0x4000082 thrsleep syz-fuzzer 94895 43113 86249 0 3 0x4000082 thrsleep syz-fuzzer 94895 389947 86249 0 3 0x4000082 thrsleep syz-fuzzer 94895 74340 86249 0 3 0x4000082 kqread syz-fuzzer 94895 105565 86249 0 3 0x4000082 thrsleep syz-fuzzer 94895 387388 86249 0 3 0x4000082 thrsleep syz-fuzzer 86249 214715 14661 0 3 0x10008a pause ksh 14661 383694 78157 0 3 0x92 select sshd 53940 478092 1 0 3 0x100083 ttyin getty 78157 389430 1 0 3 0x80 select sshd 96504 346453 69272 74 3 0x100092 bpf pflogd 69272 128516 1 0 3 0x80 netio pflogd 34604 279629 32786 73 3 0x100090 kqread syslogd 32786 501004 1 0 3 0x100082 netio syslogd 41727 450160 1 77 3 0x100090 poll dhclient 50060 490604 1 0 3 0x80 poll dhclient 68235 276018 0 0 3 0x14200 bored smr 43991 341581 0 0 3 0x14200 pgzero zerothread 29947 425052 0 0 3 0x14200 aiodoned aiodoned 34538 400818 0 0 3 0x14200 syncer update 89521 518143 0 0 3 0x14200 cleaner cleaner 99789 132376 0 0 3 0x14200 reaper reaper 47285 294573 0 0 3 0x14200 pgdaemon pagedaemon 19584 103264 0 0 3 0x14200 bored crynlk 69684 490790 0 0 3 0x14200 bored crypto 74403 473828 0 0 3 0x40014200 acpi0 acpi0 39293 171479 0 0 3 0x40014200 idle1 85075 412721 0 0 3 0x14200 bored softnet 65322 379521 0 0 3 0x14200 bored systqmp 29813 293678 0 0 3 0x14200 bored systq 54090 406204 0 0 3 0x40014200 bored softclock 72011 316620 0 0 3 0x40014200 idle0 1 252185 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9519 6413K 6932K 78643K 12131 0 pcb 13 8K 8K 78643K 135 0 rtable 85 6K 10K 78643K 672 0 ifaddr 83 16K 16K 78643K 240 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 75 0 ioctlops 0 0K 4K 78643K 1595 0 iov 0 0K 24K 78643K 78 0 mount 1 1K 1K 78643K 1 0 vnodes 1226 77K 77K 78643K 1678 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 12 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 211 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 952 0 sigio 0 0K 0K 78643K 14 0 proc 63 63K 83K 78643K 503 0 subproc 23 1K 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 87 0 in_multi 53 2K 2K 78643K 222 0 ether_multi 1 0K 0K 78643K 16 0 mrt 0 0K 0K 78643K 11 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 270 0 pfkey data 0 0K 1K 78643K 2 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 131 72K 72K 78643K 4111 0 UVM aobj 35 2K 2K 78643K 41 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 91 0 NDP 13 0K 0K 78643K 52 0 temp 140 3870K 3942K 78643K 23214 0 kqueue 3 4K 8K 78643K 18 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 11 0 6 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 57 0 55 1 0 1 1 0 8 0 rtentry 112 126 0 100 2 0 2 2 0 8 0 unpcb 120 617 0 607 1 0 1 1 0 8 0 syncache 264 15 0 15 3 3 0 1 0 8 0 sackhl 24 1 0 1 1 0 1 1 0 8 1 tcpqe 32 280 0 280 3 3 0 1 0 8 0 tcpcb 544 629 0 621 7 6 1 3 0 8 0 inpcb 296 1236 0 1229 5 3 2 2 0 8 1 rttmr 72 3 0 3 2 2 0 1 0 8 0 nd6 48 35 0 33 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 8 0 7 2 1 1 1 0 482 0 pffrnode 88 8 0 7 2 1 1 1 0 8 0 pffrent 40 104 0 103 2 1 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 72 0 67 6 5 1 2 0 8 0 pfstitem 24 127 0 90 1 0 1 1 0 8 0 pfstkey 112 131 0 94 3 0 3 3 0 8 0 pfstate 328 128 0 91 9 1 8 9 0 8 0 pfrule 1360 44 0 32 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 768 0 633 18 7 11 14 0 8 0 art_table 32 770 0 633 2 0 2 2 0 8 0 art_node 16 125 0 105 1 0 1 1 0 8 0 sysvmsgpl 40 30 0 24 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 200 0 190 1 0 1 1 0 8 0 shmpl 112 38 0 8 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2687 0 1281 89 0 89 89 0 8 0 ffsino 272 2687 0 1281 95 1 94 94 0 8 0 nchpl 144 4284 0 2683 60 0 60 60 0 8 0 uvmvnodes 72 3075 0 0 56 0 56 56 0 8 0 vnodes 208 3075 0 0 162 0 162 162 0 8 0 namei 1024 14452 0 14452 3 2 1 1 0 8 1 percpumem 16 48 0 16 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 10 0 4 3 2 1 1 0 8 0 pfiaddrpl 120 25 0 19 5 4 1 1 0 8 0 scxspl 192 12553 0 12553 9 8 1 4 0 8 1 plimitpl 152 81 0 73 1 0 1 1 0 8 0 sigapl 424 1189 0 1137 8 2 6 7 0 8 0 futexpl 56 15658 0 15658 2 1 1 1 0 8 1 knotepl 112 79 0 62 1 0 1 1 0 8 0 kqueuepl 144 103 0 99 1 0 1 1 0 8 0 pipepl 304 203 0 194 6 4 2 2 0 8 1 fdescpl 496 1152 0 1137 3 0 3 3 0 8 0 filepl 152 8618 0 8529 6 1 5 5 0 8 1 lockfpl 104 193 0 192 1 0 1 1 0 8 0 lockfspl 48 68 0 67 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 30 0 19 1 0 1 1 0 8 0 ucredpl 96 2904 0 2895 1 0 1 1 0 8 0 zombiepl 144 1138 0 1137 2 1 1 1 0 8 0 processpl 992 1189 0 1137 8 1 7 7 0 8 0 procpl 624 3329 0 3268 6 0 6 6 0 8 0 srpgc 64 3 0 3 1 1 0 1 0 8 0 sosppl 128 109 0 109 3 2 1 1 0 8 1 sockpl 400 1918 0 1899 14 10 4 4 0 8 2 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 14 0 0 2 0 2 2 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 367 0 0 45 0 45 45 0 8 0 mtagpl 96 154 0 0 4 0 4 4 0 8 0 mbufpl 256 589 0 0 30 0 30 30 0 8 0 bufpl 280 5221 0 137 364 0 364 364 0 8 0 anonpl 16 123961 0 106845 114 41 73 87 0 124 0 amapchunkpl 152 6770 0 6616 22 12 10 12 0 158 3 amappl16 192 5101 0 4134 75 25 50 59 0 8 1 amappl15 184 534 0 532 1 0 1 1 0 8 0 amappl14 176 22 0 18 1 0 1 1 0 8 0 amappl13 168 415 0 410 1 0 1 1 0 8 0 amappl12 160 397 0 393 1 0 1 1 0 8 0 amappl11 152 58 0 43 1 0 1 1 0 8 0 amappl10 144 21 0 15 1 0 1 1 0 8 0 amappl9 136 392 0 391 1 0 1 1 0 8 0 amappl8 128 371 0 336 2 0 2 2 0 8 0 amappl7 120 116 0 105 1 0 1 1 0 8 0 amappl6 112 27 0 22 1 0 1 1 0 8 0 amappl5 104 674 0 658 1 0 1 1 0 8 0 amappl4 96 878 0 850 1 0 1 1 0 8 0 amappl3 88 510 0 503 1 0 1 1 0 8 0 amappl2 80 8855 0 8790 2 0 2 2 0 8 0 amappl1 72 44614 0 44190 23 13 10 18 0 8 0 amappl 80 3572 0 3525 2 0 2 2 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 40 0 6 1 0 1 1 0 8 0 uaddrrnd 24 1162 0 1141 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1162 0 1141 1 0 1 1 0 8 0 vmmpekpl 168 13960 0 13920 2 0 2 2 0 8 0 vmmpepl 168 155714 0 153661 147 50 97 115 0 357 0 vmsppl 368 1161 0 1141 2 0 2 2 0 8 0 pdppl 4096 2331 0 2288 8 2 6 6 0 8 0 pvpl 32 379441 0 359238 241 70 171 204 0 265 0 pmappl 232 1161 0 1141 4 2 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 332 0 31 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b1af00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac4000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac4000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac4000) 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(ffff800020ed1b40) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e4a55b8,7,fffffd807f7bf960,ffff800020ddcc38) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80669f04e0,ffff800020ddcc38) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80669f04e0,ffff800020ddcc38) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80669f04e0,ffff800020ddcc38) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80669f04e0,ffff800020ddcc38) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020ddcc38) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020ddcc38,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020ddcc38,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020ddcc38,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020ddcc38) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800020ed1fc0) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020ed1fc0) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc43e0, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp