uvm_fault(0xfffffd807effecf0, 0x81000b, 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(0xfffffd807effecf0, 0x81000b, 0, 1) -> e in_delmulti(80ffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800020ecc120, count: 0 ddb{0}> trace in_delmulti(80ffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b11700) 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(ffff800020ecc300) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807471d5b8,7,fffffd807f7bf8a0,ffff800020dd6ed8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80680af6a8,ffff800020dd6ed8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80680af6a8,ffff800020dd6ed8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80680af6a8,ffff800020dd6ed8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80680af6a8,ffff800020dd6ed8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020dd6ed8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020dd6ed8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020dd6ed8,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020dd6ed8,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020dd6ed8) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800020ecc780) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020ecc780) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffeb8b0, count: -17 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800020ecc0d0 rbx 0 rdx 0 rcx 0 rax 0xffff800020dd6ed8 r8 0xffff800000b11700 r9 0xffffffff81e56833 rt_ifa_purge+0x153 r10 0x5 r11 0xf884fcb3ca3081f7 r12 0 r13 0x3 r14 0x80ffff acpi_pdirpa+0x7fbe67 r15 0x1 rip 0xffffffff823bf7bd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020ecc070 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (syz-executor.0) pid=412311 stat=onproc flags process=a proc=2000 pri=32, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff800020dd6c60,0xffff8000ffffbb58 process=0xffff8000ffffd3b0 user=0xffff800020ec7000, vmspace=0xfffffd807effecf0 estcpu=25, cpticks=1, pctcpu=0.11 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 738 90334 87672 0 2 0 syz-executor.1 738 377396 87672 0 3 0x4000080 fsleep syz-executor.1 60471 81316 0 0 3 0x14200 bored sosplice 87672 103346 12473 0 7 0x482 syz-executor.1 12473 322347 64614 0 3 0x82 thrsleep syz-fuzzer 12473 315827 64614 0 3 0x4000082 thrsleep syz-fuzzer 12473 368966 64614 0 3 0x4000082 thrsleep syz-fuzzer 12473 11765 64614 0 3 0x4000082 thrsleep syz-fuzzer 12473 270818 64614 0 3 0x4000082 kqread syz-fuzzer 12473 455231 64614 0 3 0x4000082 thrsleep syz-fuzzer 12473 485272 64614 0 3 0x4000082 thrsleep syz-fuzzer 12473 134412 64614 0 3 0x4000082 thrsleep syz-fuzzer 64614 115518 49166 0 3 0x10008a pause ksh 49166 45102 1902 0 3 0x92 select sshd 3745 116432 1 0 3 0x100083 ttyin getty 1902 471556 1 0 3 0x80 select sshd 95455 252097 90171 74 3 0x100092 bpf pflogd 90171 135857 1 0 3 0x80 netio pflogd 82935 430280 71071 73 3 0x100090 kqread syslogd 71071 150120 1 0 3 0x100082 netio syslogd 92268 299005 1 77 3 0x100090 poll dhclient 42330 146931 1 0 3 0x80 poll dhclient 72110 184602 0 0 3 0x14200 bored smr 62942 131947 0 0 3 0x14200 pgzero zerothread 61211 204974 0 0 3 0x14200 aiodoned aiodoned 64293 71159 0 0 3 0x14200 syncer update 97811 378443 0 0 3 0x14200 cleaner cleaner 81213 353694 0 0 3 0x14200 reaper reaper 77531 322964 0 0 3 0x14200 pgdaemon pagedaemon 61491 21924 0 0 3 0x14200 bored crynlk 58505 235434 0 0 3 0x14200 bored crypto 40244 480180 0 0 3 0x40014200 acpi0 acpi0 28042 157440 0 0 3 0x40014200 idle1 32901 403749 0 0 3 0x14200 bored softnet 93877 70977 0 0 2 0x14200 systqmp 50002 61383 0 0 3 0x14200 bored systq 52077 144131 0 0 3 0x40014200 bored softclock 77297 293292 0 0 3 0x40014200 idle0 1 250149 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 9492 6413K 6665K 78643K 10778 0 pcb 13 8K 8K 78643K 50 0 rtable 82 3K 6K 78643K 287 0 ifaddr 61 13K 14K 78643K 87 0 counters 43 33K 34K 78643K 47 0 ioctlops 0 0K 4K 78643K 1498 0 iov 0 0K 8K 78643K 262 0 mount 1 1K 1K 78643K 1 0 vnodes 1215 76K 77K 78643K 1276 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 48 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 222 0 sigio 0 0K 0K 78643K 3 0 proc 60 63K 83K 78643K 454 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 23 0 in_multi 49 2K 2K 78643K 68 0 ether_multi 1 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 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 167 42K 42K 78643K 1687 0 UVM aobj 13 2K 2K 78643K 21 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 9 0K 0K 78643K 15 0 temp 89 3862K 3926K 78643K 2548 0 kqueue 3 4K 16K 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 7 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 23 0 21 1 0 1 1 0 8 0 rtentry 112 52 0 21 2 0 2 2 0 8 0 unpcb 120 61 0 51 1 0 1 1 0 8 0 syncache 272 8 0 8 3 2 1 1 0 8 1 tcpqe 32 193 0 193 2 2 0 2 0 8 0 tcpcb 592 83 0 79 2 1 1 2 0 8 0 inpcb 296 218 0 211 3 1 2 2 0 8 1 nd6 48 8 0 0 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 0 1 1 0 8 1 pfstscr 40 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 23 0 23 2 1 1 1 0 8 1 pfstitem 24 37 0 15 1 0 1 1 0 8 0 pfstkey 112 37 0 15 1 0 1 1 0 8 0 pfstate 328 36 0 13 3 0 3 3 0 8 0 pfrule 1360 28 0 21 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 240 0 44 13 0 13 13 0 8 0 art_table 32 241 0 44 2 0 2 2 0 8 0 art_node 16 51 0 20 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 3 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 40 0 30 1 0 1 1 0 8 0 shmpl 112 18 0 8 2 1 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1663 0 263 89 1 88 89 0 8 0 ffsino 272 1663 0 263 95 1 94 94 0 8 0 nchpl 144 2291 0 685 60 0 60 60 0 8 0 uvmvnodes 72 1748 0 0 32 0 32 32 0 8 0 vnodes 208 1748 0 0 92 0 92 92 0 8 0 namei 1024 5949 0 5949 3 2 1 1 0 8 1 percpumem 16 34 0 2 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 2 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 7 0 7 2 1 1 1 0 8 1 scxspl 200 6497 0 6497 11 7 4 7 0 8 4 plimitpl 152 27 0 19 1 0 1 1 0 8 0 sigapl 424 438 0 406 4 0 4 4 0 8 0 futexpl 56 2787 0 2786 2 1 1 1 0 8 0 knotepl 112 79 0 61 1 0 1 1 0 8 0 kqueuepl 152 37 0 34 1 0 1 1 0 8 0 pipepl 304 91 0 81 2 1 1 2 0 8 0 fdescpl 496 422 0 406 5 2 3 3 0 8 0 filepl 152 2265 0 2173 6 1 5 5 0 8 1 lockfpl 104 41 0 40 1 0 1 1 0 8 0 lockfspl 48 13 0 12 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 96 154 0 145 1 0 1 1 0 8 0 zombiepl 144 407 0 406 2 1 1 1 0 8 0 processpl 1008 438 0 406 6 1 5 5 0 8 0 procpl 632 864 0 824 5 1 4 4 0 8 0 sosppl 144 6 0 6 2 1 1 1 0 8 1 sockpl 400 303 0 284 5 2 3 3 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 305 0 0 38 0 38 38 0 8 0 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 323 0 0 20 0 20 20 0 8 0 bufpl 280 3673 0 135 253 0 253 253 0 8 0 anonpl 16 54434 0 36244 76 1 75 75 0 124 1 amapchunkpl 152 2261 0 1959 14 1 13 14 0 158 0 amappl16 192 1744 0 905 43 0 43 43 0 8 1 amappl15 184 9 0 7 1 0 1 1 0 8 0 amappl14 176 96 0 93 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 25 0 21 1 0 1 1 0 8 0 amappl11 152 52 0 37 1 0 1 1 0 8 0 amappl10 144 16 0 13 1 0 1 1 0 8 0 amappl9 136 474 0 469 1 0 1 1 0 8 0 amappl8 128 450 0 407 2 0 2 2 0 8 0 amappl7 120 117 0 102 1 0 1 1 0 8 0 amappl6 112 32 0 25 1 0 1 1 0 8 0 amappl5 104 320 0 302 1 0 1 1 0 8 0 amappl4 96 493 0 463 1 0 1 1 0 8 0 amappl3 88 223 0 213 1 0 1 1 0 8 0 amappl2 80 2434 0 2365 2 0 2 2 0 8 0 amappl1 72 21030 0 20574 23 13 10 18 0 8 0 amappl 80 1162 0 1082 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 20 0 8 1 0 1 1 0 8 0 uaddrrnd 24 424 0 406 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 424 0 406 1 0 1 1 0 8 0 vmmpekpl 168 7026 0 6994 2 0 2 2 0 8 0 vmmpepl 168 59902 0 57836 124 27 97 114 0 357 7 vmsppl 368 423 0 406 2 0 2 2 0 8 0 pdppl 4096 855 0 814 7 1 6 6 0 8 0 pvpl 32 185582 0 164228 181 1 180 180 0 265 7 pmappl 232 423 0 406 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 287 0 12 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace in_delmulti(80ffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b11700) 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(ffff800020ecc300) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807471d5b8,7,fffffd807f7bf8a0,ffff800020dd6ed8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80680af6a8,ffff800020dd6ed8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80680af6a8,ffff800020dd6ed8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80680af6a8,ffff800020dd6ed8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80680af6a8,ffff800020dd6ed8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020dd6ed8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020dd6ed8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020dd6ed8,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020dd6ed8,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020dd6ed8) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800020ecc780) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020ecc780) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffeb8b0, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d70ff0) 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_pc() at __sanitizer_cov_trace_pc+0x4f kd_curproc sys/dev/kcov.c:458 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x4f sys/dev/kcov.c:112 __mp_acquire_count(ffffffff82933140,1) 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(ffff800021cea4a0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800021cea4a0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800021cea4a0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff827f5664,120,ffffffff823fd3d0,2) at tsleep+0x1cc sys/kern/kern_synch.c:155 sys_nanosleep(ffff8000ffffbb48,ffff800021cea5d0,ffff800021cea620) at sys_nanosleep+0x205 sys/kern/kern_time.c:297 syscall(ffff800021cea6a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021cea6a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2e40, count: -12