uvm_fault(0xfffffd807effea10, 0x601, 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(0xfffffd807effea10, 0x601, 0, 1) -> e in_delmulti(5f5) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800020ee4950, count: 0 ddb{1}> trace in_delmulti(5f5) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af8d00) 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(ffff800020ee4b30) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e32c758,7,fffffd807f7bf900,ffff8000ffffb650) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806caae698,ffff8000ffffb650) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806caae698,ffff8000ffffb650) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806caae698,ffff8000ffffb650) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806caae698,ffff8000ffffb650) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffffb650) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffffb650,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff8000ffffb650,ffff800020ee4dc0,ffff800020ee4e10) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800020ee4e90) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ee4e90) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbfb10, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800020ee4900 rbx 0 rdx 0 rcx 0 rax 0xffff8000ffffb650 r8 0xffff800000af8d00 r9 0xffffffff81e56833 rt_ifa_purge+0x153 r10 0x5 r11 0x64e0d21a11e9b673 r12 0 r13 0x3 r14 0x5f5 r15 0x1 rip 0xffffffff823bf7bd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020ee48a0 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=480627 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffaee8,0xffffffff828cde18 process=0xffff800020e357b0 user=0xffff800020edf000, vmspace=0xfffffd807effea10 estcpu=36, cpticks=11, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 87211 425113 4483 0 3 0x82 piperd syz-executor.1 99219 366607 0 0 3 0x14200 bored sosplice 4483 119425 40328 0 3 0x82 kqread syz-fuzzer 4483 385751 40328 0 3 0x4000082 nanosleep syz-fuzzer 4483 401074 40328 0 3 0x4000082 thrsleep syz-fuzzer 4483 418028 40328 0 3 0x4000082 thrsleep syz-fuzzer 4483 232104 40328 0 3 0x4000082 thrsleep syz-fuzzer 4483 476022 40328 0 2 0x4000002 syz-fuzzer 4483 457014 40328 0 3 0x4000082 thrsleep syz-fuzzer 4483 90582 40328 0 2 0x4000002 syz-fuzzer 40328 150469 20961 0 3 0x10008a pause ksh 20961 425674 61822 0 3 0x92 select sshd 73836 221604 1 0 3 0x100083 ttyin getty 61822 397256 1 0 3 0x80 select sshd 56197 422595 75869 74 3 0x100092 bpf pflogd 75869 71076 1 0 3 0x80 netio pflogd 13693 298699 23329 73 3 0x100090 kqread syslogd 23329 468655 1 0 3 0x100082 netio syslogd 41112 82693 1 77 7 0x100090 dhclient 75122 447799 1 0 3 0x80 poll dhclient 49312 169724 0 0 3 0x14200 bored smr 63728 359557 0 0 3 0x14200 pgzero zerothread 27655 380222 0 0 3 0x14200 aiodoned aiodoned 72103 114356 0 0 3 0x14200 syncer update 3689 372112 0 0 3 0x14200 cleaner cleaner 41389 511741 0 0 3 0x14200 reaper reaper 39370 361099 0 0 3 0x14200 pgdaemon pagedaemon 17450 106862 0 0 3 0x14200 bored crynlk 12170 243496 0 0 3 0x14200 bored crypto 8787 278234 0 0 3 0x40014200 acpi0 acpi0 75681 97185 0 0 3 0x40014200 idle1 28341 161168 0 0 3 0x14200 bored softnet 13904 420681 0 0 2 0x14200 systqmp 15884 336039 0 0 3 0x14200 bored systq 42706 429944 0 0 3 0x40014200 bored softclock 88129 314675 0 0 3 0x40014200 idle0 1 469964 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 9492 6405K 6790K 78643K 10993 0 pcb 13 8K 8K 78643K 47 0 rtable 112 6K 10K 78643K 468 0 ifaddr 63 13K 15K 78643K 149 0 counters 43 33K 34K 78643K 53 0 ioctlops 0 0K 4K 78643K 1547 0 iov 0 0K 16K 78643K 31 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1374 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 86 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 428 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 95K 78643K 528 0 subproc 23 1K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 47 0 in_multi 47 2K 2K 78643K 142 0 ether_multi 1 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 245 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 185 29K 30K 78643K 2315 0 UVM aobj 19 2K 3K 78643K 23 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 36 0 NDP 9 0K 0K 78643K 34 0 temp 121 3872K 3936K 78643K 6890 0 kqueue 3 4K 10K 78643K 19 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 10 0 6 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 35 0 33 1 0 1 1 0 8 0 rtentry 112 90 0 51 2 0 2 2 0 8 0 unpcb 120 1003 0 992 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 13 0 13 1 1 0 1 0 8 0 tcpcb 592 96 0 92 3 2 1 2 0 8 0 inpcb 296 391 0 384 3 1 2 2 0 8 1 nd6 48 27 0 21 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 1 0 1 1 0 8 0 pfosfp 40 847 0 423 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 52 0 47 3 1 2 2 0 8 1 pfstitem 24 24 0 18 1 0 1 1 0 8 0 pfstkey 112 24 0 18 1 0 1 1 0 8 0 pfstate 328 24 0 18 2 0 2 2 0 8 0 pfsrctr 152 5 0 3 1 0 1 1 0 8 0 pfrule 1360 38 0 27 3 1 2 2 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 402 0 186 15 1 14 14 0 8 0 art_table 32 403 0 186 2 0 2 2 0 8 0 art_node 16 89 0 51 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 3 1 0 1 1 0 8 0 semupl 112 6 0 6 2 2 0 1 0 8 0 semapl 112 81 0 71 1 0 1 1 0 8 0 shmpl 112 20 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2012 0 611 89 0 89 89 0 8 0 ffsino 272 2012 0 611 95 1 94 95 0 8 0 nchpl 144 2927 0 1345 60 0 60 60 0 8 0 uvmvnodes 72 2169 0 0 40 0 40 40 0 8 0 vnodes 208 2169 0 0 115 0 115 115 0 8 0 namei 1024 8570 0 8570 2 1 1 1 0 8 1 percpumem 16 37 0 5 1 0 1 1 0 8 0 pfiaddrpl 120 17 0 13 2 1 1 1 0 8 0 scxspl 200 8453 0 8453 9 8 1 7 0 8 1 plimitpl 152 41 0 33 1 0 1 1 0 8 0 sigapl 424 641 0 610 4 0 4 4 0 8 0 futexpl 56 6069 0 6069 2 1 1 1 0 8 1 knotepl 112 97 0 83 1 0 1 1 0 8 0 kqueuepl 152 46 0 44 1 0 1 1 0 8 0 pipepl 304 144 0 136 3 1 2 2 0 8 1 fdescpl 496 625 0 610 3 0 3 3 0 8 0 filepl 152 4167 0 4080 5 0 5 5 0 8 1 lockfpl 104 80 0 79 1 0 1 1 0 8 0 lockfspl 48 28 0 27 1 0 1 1 0 8 0 sessionpl 120 19 0 8 1 0 1 1 0 8 0 pgrppl 48 31 0 20 1 0 1 1 0 8 0 ucredpl 96 351 0 342 1 0 1 1 0 8 0 zombiepl 144 611 0 610 2 1 1 1 0 8 0 processpl 1008 641 0 610 6 1 5 5 0 8 0 procpl 632 1415 0 1377 4 0 4 4 0 8 0 sosppl 144 12 0 12 1 0 1 1 0 8 1 sockpl 400 1431 0 1411 7 3 4 5 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k 2048 174 0 0 21 1 20 21 0 8 0 mtagpl 96 23 0 0 1 0 1 1 0 8 0 mbufpl 256 242 0 0 13 0 13 13 0 8 0 bufpl 280 4070 0 126 282 0 282 282 0 8 0 anonpl 16 84340 0 66308 99 10 89 92 0 124 11 amapchunkpl 152 3651 0 3319 20 6 14 18 0 158 0 amappl16 192 3180 0 2316 66 14 52 56 0 8 8 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 28 0 23 1 0 1 1 0 8 0 amappl13 168 38 0 34 1 0 1 1 0 8 0 amappl12 160 32 0 27 1 0 1 1 0 8 0 amappl11 152 83 0 67 1 0 1 1 0 8 0 amappl10 144 16 0 12 1 0 1 1 0 8 0 amappl9 136 605 0 603 1 0 1 1 0 8 0 amappl8 128 408 0 345 3 0 3 3 0 8 0 amappl7 120 131 0 117 1 0 1 1 0 8 0 amappl6 112 32 0 25 1 0 1 1 0 8 0 amappl5 104 497 0 481 1 0 1 1 0 8 0 amappl4 96 549 0 519 1 0 1 1 0 8 0 amappl3 88 151 0 141 1 0 1 1 0 8 0 amappl2 80 3983 0 3917 2 0 2 2 0 8 0 amappl1 72 27261 0 26796 23 13 10 18 0 8 0 amappl 80 1733 0 1642 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 22 0 4 1 0 1 1 0 8 0 uaddrrnd 24 625 0 610 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 625 0 610 1 0 1 1 0 8 0 vmmpekpl 168 8558 0 8526 2 0 2 2 0 8 0 vmmpepl 168 86532 0 84466 150 27 123 129 0 357 30 vmsppl 368 624 0 610 2 0 2 2 0 8 0 pdppl 4096 1257 0 1220 6 1 5 6 0 8 0 pvpl 32 253859 0 232700 217 9 208 209 0 265 25 pmappl 232 624 0 610 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 265 0 12 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(ffffffff82933140,ffffffff82933140) at __sanitizer_cov_trace_cmp4 __mp_acquire_count(ffffffff82933140,2) 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(ffff800020e18330,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e18330,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e18330,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff828c1bbc,118,ffffffff8246aadb,41c6ad) at tsleep+0x1cc sys/kern/kern_synch.c:155 doppoll(ffff800020dd78b8,7f7ffffccb50,3,ffff800020e184c8,0,ffff800020e18580) at doppoll+0x57e sys/kern/sys_generic.c:968 sys_poll(ffff800020dd78b8,ffff800020e18530,ffff800020e18580) at sys_poll+0xa6 syscall(ffff800020e18600) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e18600) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffccb30, count: -13 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(5f5) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af8d00) 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(ffff800020ee4b30) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e32c758,7,fffffd807f7bf900,ffff8000ffffb650) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806caae698,ffff8000ffffb650) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806caae698,ffff8000ffffb650) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806caae698,ffff8000ffffb650) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806caae698,ffff8000ffffb650) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffffb650) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffffb650,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff8000ffffb650,ffff800020ee4dc0,ffff800020ee4e10) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800020ee4e90) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ee4e90) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbfb10, count: -16