uvm_fault(0xffffffff827ed590, 0xffffffff0000000b, 0, 1) -> e kernel: 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(0xffffffff827ed590, 0xffffffff0000000b, 0, 1) -> e in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800022f34e10, count: 0 ddb{1}> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b55e00) 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:1032 tun_clone_destroy(ffff800000ac6000) 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(ffff800022f34ff0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807b3235b8,7,fffffd807f7bf840,ffff800020eb4ee8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8066129908,ffff800020eb4ee8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8066129908,ffff800020eb4ee8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8066129908,ffff800020eb4ee8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8066129908,ffff800020eb4ee8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020eb4ee8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020eb4ee8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020eb4ee8,ffff800022f35280,ffff800022f352d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022f35350) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022f35350) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcac70, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800022f34dc0 rbx 0x8 rdx 0 rcx 0 rax 0xffff800020eb4ee8 r8 0xffff800000b55e00 r9 0xffffffff81e56833 rt_ifa_purge+0x153 r10 0x5 r11 0xa602072da651d5eb r12 0 r13 0x10004 __ALIGN_SIZE+0xf004 r14 0xfffffffeffffffff r15 0x1 rip 0xffffffff823bf7bd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800022f34d60 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=200970 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020eb4508,0xffffffff828cde18 process=0xffff800020eb67e8 user=0xffff800022f30000, vmspace=0xfffffd8065643180 estcpu=36, cpticks=6, pctcpu=0.0 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 14360 283731 0 0 3 0x14200 bored sosplice 82464 455635 1 0 3 0x100083 ttyin getty 41104 183445 1878 0 3 0x82 piperd syz-executor.1 1878 497010 10887 0 3 0x82 thrsleep syz-fuzzer 1878 145967 10887 0 7 0x4000002 syz-fuzzer 1878 493123 10887 0 2 0x4000002 syz-fuzzer 1878 358141 10887 0 2 0x4000002 syz-fuzzer 1878 47717 10887 0 3 0x4000082 thrsleep syz-fuzzer 1878 334675 10887 0 3 0x4000082 thrsleep syz-fuzzer 1878 68557 10887 0 3 0x4000082 thrsleep syz-fuzzer 1878 277685 10887 0 3 0x4000082 kqread syz-fuzzer 10887 125967 91901 0 3 0x10008a pause ksh 91901 338468 6701 0 3 0x92 select sshd 6701 195974 1 0 3 0x80 select sshd 99607 334608 22411 74 3 0x100092 bpf pflogd 22411 28645 1 0 3 0x80 netio pflogd 12270 162519 76178 73 3 0x100090 kqread syslogd 76178 105696 1 0 3 0x100082 netio syslogd 94744 59476 1 77 3 0x100090 poll dhclient 45644 255219 1 0 3 0x80 poll dhclient 5358 59585 0 0 3 0x14200 bored smr 27339 484732 0 0 3 0x14200 pgzero zerothread 28555 232468 0 0 3 0x14200 aiodoned aiodoned 32261 86241 0 0 3 0x14200 syncer update 42263 416704 0 0 3 0x14200 cleaner cleaner 54060 179994 0 0 3 0x14200 reaper reaper 47728 14321 0 0 3 0x14200 pgdaemon pagedaemon 72608 237497 0 0 3 0x14200 bored crynlk 21530 165599 0 0 3 0x14200 bored crypto 37907 268852 0 0 3 0x40014200 acpi0 acpi0 53391 252522 0 0 3 0x40014200 idle1 13466 359487 0 0 3 0x14200 bored softnet 12130 89959 0 0 2 0x14200 systqmp 46873 463279 0 0 3 0x14200 bored systq 94035 110544 0 0 3 0x40014200 bored softclock 34067 316459 0 0 3 0x40014200 idle0 1 425389 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 9558 6439K 6942K 78643K 12866 0 pcb 13 8K 8K 78643K 239 0 rtable 116 11K 14K 78643K 942 0 ifaddr 136 27K 28K 78643K 363 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 79 0 ioctlops 0 0K 4K 78643K 1765 0 iov 0 0K 16K 78643K 143 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1925 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 42 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 406 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 1947 0 sigio 0 0K 0K 78643K 18 0 proc 76 64K 95K 78643K 728 0 subproc 23 1K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 182 0 in_multi 165 6K 7K 78643K 329 0 ether_multi 1 0K 0K 78643K 33 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 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 364 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 218 95K 95K 78643K 7050 0 UVM aobj 82 5K 5K 78643K 109 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 215 0 NDP 18 0K 0K 78643K 53 0 temp 161 3881K 3945K 78643K 29506 0 kqueue 3 4K 17K 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 18 0 12 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 76 0 74 1 0 1 1 0 8 0 rtentry 112 154 0 123 2 0 2 2 0 8 0 unpcb 120 1681 0 1671 1 0 1 1 0 8 0 syncache 272 23 0 23 9 9 0 1 0 8 0 tcpqe 32 140 0 140 1 1 0 1 0 8 0 tcpcb 592 586 0 582 11 10 1 2 0 8 0 inpcb 296 1757 0 1750 9 7 2 2 0 8 1 rttmr 72 3 0 3 2 2 0 1 0 8 0 nd6 48 25 0 21 1 0 1 1 0 8 0 pkpcb 40 22 0 22 5 4 1 1 0 8 1 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 12 0 12 3 2 1 1 0 482 1 pffrnode 88 12 0 12 3 2 1 1 0 8 1 pffrent 40 165 0 165 3 2 1 1 0 8 1 pfosfp 40 848 0 423 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 139 0 124 6 4 2 2 0 8 0 pftag 88 7 0 5 1 0 1 1 0 8 0 pfstitem 24 21 0 19 1 0 1 1 0 8 0 pfstkey 112 25 0 23 1 0 1 1 0 8 0 pfstate 328 22 0 20 2 1 1 2 0 8 0 pfsrctr 152 48 0 48 2 2 0 1 0 8 0 pfrule 1360 72 0 49 4 2 2 3 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 513 0 342 15 3 12 13 0 8 0 art_table 32 515 0 342 2 0 2 2 0 8 0 art_node 16 115 0 85 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 11 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 400 0 390 1 0 1 1 0 8 0 shmpl 112 106 0 28 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3799 0 2400 89 0 89 89 0 8 0 ffsino 272 3799 0 2400 95 0 95 95 0 8 0 nchpl 144 8153 0 6559 61 1 60 61 0 8 0 uvmvnodes 72 4378 0 0 80 0 80 80 0 8 0 vnodes 208 4378 0 0 231 0 231 231 0 8 0 namei 1024 21411 0 21411 4 3 1 1 0 8 1 percpumem 16 50 0 18 1 0 1 1 0 8 0 vcpupl 1984 11 0 0 2 0 2 2 0 8 0 vmpool 560 17 0 6 2 1 1 1 0 8 0 pfiaddrpl 120 56 0 35 2 1 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 20018 0 20018 16 15 1 5 0 8 1 plimitpl 152 124 0 116 1 0 1 1 0 8 0 sigapl 424 2159 0 2128 4 0 4 4 0 8 0 futexpl 56 30138 0 30138 4 3 1 1 0 8 1 knotepl 112 154 0 140 1 0 1 1 0 8 0 kqueuepl 152 186 0 183 1 0 1 1 0 8 0 pipepl 304 371 0 363 7 5 2 3 0 8 1 fdescpl 496 2142 0 2127 3 0 3 3 0 8 0 filepl 152 14068 0 13981 8 3 5 7 0 8 0 lockfpl 104 348 0 347 1 0 1 1 0 8 0 lockfspl 48 122 0 121 1 0 1 1 0 8 0 sessionpl 120 21 0 10 1 0 1 1 0 8 0 pgrppl 48 49 0 38 1 0 1 1 0 8 0 ucredpl 96 1396 0 1387 1 0 1 1 0 8 0 zombiepl 144 2129 0 2128 3 2 1 1 0 8 0 processpl 1008 2159 0 2128 5 0 5 5 0 8 0 procpl 632 6022 0 5984 6 2 4 5 0 8 0 srpgc 72 2 0 2 1 1 0 1 0 8 0 sosppl 144 39 0 39 9 9 0 1 0 8 0 sockpl 400 3543 0 3524 17 13 4 4 0 8 2 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 14 0 0 1 0 1 1 0 8 0 mcl8k 8192 11 0 0 2 0 2 2 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 195 0 0 23 0 23 23 0 8 0 mtagpl 96 60 0 0 2 0 2 2 0 8 0 mbufpl 256 519 0 0 20 0 20 20 0 8 0 bufpl 280 6798 0 561 446 0 446 446 0 8 0 anonpl 16 218057 0 199332 126 47 79 94 0 124 0 amapchunkpl 152 14969 0 14651 71 56 15 27 0 158 0 amappl16 192 8488 0 7594 78 33 45 57 0 8 0 amappl15 184 1446 0 1445 2 1 1 1 0 8 0 amappl14 176 4 0 0 1 0 1 1 0 8 0 amappl13 168 44 0 39 1 0 1 1 0 8 0 amappl12 160 466 0 460 1 0 1 1 0 8 0 amappl11 152 81 0 64 1 0 1 1 0 8 0 amappl10 144 1352 0 1347 1 0 1 1 0 8 0 amappl9 136 368 0 367 1 0 1 1 0 8 0 amappl8 128 475 0 400 3 0 3 3 0 8 0 amappl7 120 1465 0 1451 1 0 1 1 0 8 0 amappl6 112 34 0 26 1 0 1 1 0 8 0 amappl5 104 2494 0 2477 1 0 1 1 0 8 0 amappl4 96 539 0 509 1 0 1 1 0 8 0 amappl3 88 203 0 195 1 0 1 1 0 8 0 amappl2 80 16348 0 16275 2 0 2 2 0 8 0 amappl1 72 70979 0 70536 23 13 10 18 0 8 0 amappl 80 6379 0 6285 4 1 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 64 108 0 27 2 0 2 2 0 8 0 uaddrrnd 24 2159 0 2133 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2159 0 2133 1 0 1 1 0 8 0 vmmpekpl 168 17271 0 17232 3 0 3 3 0 8 0 vmmpepl 168 278545 0 276429 175 74 101 134 0 357 1 vmsppl 368 2158 0 2133 3 0 3 3 0 8 0 pdppl 4096 4325 0 4277 7 0 7 7 0 8 0 pvpl 32 646078 0 624229 278 93 185 218 0 265 0 pmappl 232 2158 0 2133 4 2 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 301 0 32 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(ffffffff82785ff0) 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(17504c,17504d) at __sanitizer_cov_trace_cmp4+0x2b sys/dev/kcov.c:442 __mp_lock(ffffffff82933140) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82933140) at __mp_lock+0x139 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff82933140) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82933140) at __mp_lock+0x12e sys/kern/kern_lock.c:147 sleep_setup(ffff800020e7df50,ffffffff827f5664,120,ffffffff823fd3d0) at sleep_setup+0xcf sys/kern/kern_synch.c:373 tsleep(ffffffff827f5664,120,ffffffff823fd3d0,2) at tsleep+0xe6 sleep_setup_timeout sys/kern/kern_synch.c:435 [inline] tsleep(ffffffff827f5664,120,ffffffff823fd3d0,2) at tsleep+0xe6 sys/kern/kern_synch.c:151 sys_nanosleep(ffff8000fffff3d0,ffff800020e7e080,ffff800020e7e0d0) at sys_nanosleep+0x205 sys/kern/kern_time.c:297 syscall(ffff800020e7e150) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e7e150) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00004df20, count: -13 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b55e00) 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:1032 tun_clone_destroy(ffff800000ac6000) 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(ffff800022f34ff0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807b3235b8,7,fffffd807f7bf840,ffff800020eb4ee8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8066129908,ffff800020eb4ee8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8066129908,ffff800020eb4ee8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8066129908,ffff800020eb4ee8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8066129908,ffff800020eb4ee8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020eb4ee8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020eb4ee8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020eb4ee8,ffff800022f35280,ffff800022f352d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022f35350) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022f35350) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcac70, count: -16