uvm_fault(0xfffffd8079bdf740, 0xa6, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in6_pcbhashlookup+0xa0: movl 0xa4(%r14),%ebx ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd8079bdf740, 0xa6, 0, 1) -> e in6_pcbhashlookup(ffffffff8287ef00,ffff800020edc090,7,ffff8000006abd48,8f2c,0) at in6_pcbhashlookup+0xa0 sys/netinet6/in6_pcb.c:502 end trace frame: 0xffff800020edc100, count: 0 ddb{1}> trace in6_pcbhashlookup(ffffffff8287ef00,ffff800020edc090,7,ffff8000006abd48,8f2c,0) at in6_pcbhashlookup+0xa0 sys/netinet6/in6_pcb.c:502 in6_pcbconnect(fffffd806f650b90,fffffd80793cc800) at in6_pcbconnect+0x44c sys/netinet6/in6_pcb.c:287 tcp_usrreq(fffffd806adfab00,4,0,fffffd80793cc800,0,ffff800020ec3650) at tcp_usrreq+0xaf9 sys/netinet/tcp_usrreq.c:228 sys_connect(ffff800020ec3650,ffff800020edc258,ffff800020edc2a0) at sys_connect+0x3df sys/kern/uipc_syscalls.c:381 syscall(ffff800020edc320) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020edc320) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1256c1458f0, count: -6 ddb{1}> show registers rdi 0xffff800022f0b000 rsi 0x3c9 rbp 0xffff800020edc070 rbx 0x7 rdx 0xffff800022f0b000 rcx 0x3c8 rax 0xffff8000006b2538 r8 0x30 r9 0x8f2c __ALIGN_SIZE+0x7f2c r10 0x1fdb97d4fbd4d97c r11 0x85950ea8e2d2686a r12 0xffff800020edc090 r13 0 r14 0x2 r15 0x100 rip 0xffffffff8169a120 in6_pcbhashlookup+0xa0 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800020edbfe0 ss 0x10 in6_pcbhashlookup+0xa0: movl 0xa4(%r14),%ebx ddb{1}> show proc PROC (syz-executor.0) pid=160434 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=72, nice=20 forw=0xffffffffffffffff, list=0xffff800020ec29f8,0xffffffff828b9d50 process=0xffff800020ec43f8 user=0xffff800020ed7000, vmspace=0xfffffd8079bdf740 estcpu=22, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41137 465346 6622 0 7 0 syz-executor.0 *41137 160434 6622 0 7 0x4000000 syz-executor.0 23161 59257 97336 0 3 0x2 biowait syz-executor.1 6622 435594 97336 0 3 0x82 nanosleep syz-executor.0 51842 148565 0 0 3 0x14200 bored sosplice 97336 61852 16980 0 3 0x82 thrsleep syz-fuzzer 97336 259876 16980 0 3 0x4000082 nanosleep syz-fuzzer 97336 266157 16980 0 3 0x4000082 kqread syz-fuzzer 97336 291686 16980 0 3 0x4000082 thrsleep syz-fuzzer 97336 39750 16980 0 3 0x4000082 nanosleep syz-fuzzer 97336 509281 16980 0 3 0x4000082 thrsleep syz-fuzzer 97336 90780 16980 0 3 0x4000082 thrsleep syz-fuzzer 97336 495190 16980 0 3 0x4000082 thrsleep syz-fuzzer 16980 214434 70070 0 3 0x10008a pause ksh 70070 191156 38693 0 3 0x92 select sshd 83196 364828 1 0 3 0x100083 ttyopn getty 38693 169121 1 0 3 0x80 select sshd 22733 365142 45688 74 3 0x100092 bpf pflogd 45688 281407 1 0 3 0x80 netio pflogd 46802 498574 51959 73 3 0x100090 kqread syslogd 51959 455578 1 0 3 0x100082 netio syslogd 17880 27999 1 77 3 0x100090 poll dhclient 19274 520075 1 0 3 0x80 poll dhclient 64703 313097 0 0 3 0x14200 bored smr 73498 155378 0 0 3 0x14200 pgzero zerothread 53677 111115 0 0 3 0x14200 aiodoned aiodoned 8380 407689 0 0 3 0x14200 syncer update 57513 169998 0 0 3 0x14200 cleaner cleaner 76274 211006 0 0 3 0x14200 reaper reaper 2801 372102 0 0 3 0x14200 pgdaemon pagedaemon 95575 343761 0 0 3 0x14200 bored crynlk 64852 303835 0 0 3 0x14200 bored crypto 19789 213263 0 0 3 0x40014200 acpi0 acpi0 58131 519321 0 0 3 0x40014200 idle1 44674 352741 0 0 3 0x14200 bored softnet 62091 10951 0 0 3 0x14200 bored systqmp 17567 421480 0 0 3 0x14200 bored systq 98004 219683 0 0 3 0x40014200 bored softclock 53446 370584 0 0 3 0x40014200 idle0 1 63245 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 41137 (syz-executor.0) thread 0xffff800020ec3650 (160434) exclusive rwlock netlock r = 0 (0xffffffff826f42a0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sys_connect+0x6a sys/kern/uipc_syscalls.c:355 #3 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 #4 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82881568) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x3fd sys/arch/amd64/amd64/trap.c:568 #2 Xsyscall+0x128 Process 23161 (syz-executor.1) thread 0xffff800020ec2018 (59257) exclusive rrwlock inode r = 0 (0xfffffd8078b1df80) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 rw_enter+0x446 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x135 sys/ufs/ffs/ffs_vfsops.c:1350 #5 ffs_inode_alloc+0x1e1 sys/ufs/ffs/ffs_alloc.c:394 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3046 #9 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80745e5a28) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 rw_enter+0x446 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x5f7 sys/kern/vfs_lookup.c:249 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3031 #8 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9566 6444K 7332K 78643K 16833 0 pcb 13 8K 8K 78643K 399 0 rtable 117 6K 6K 78643K 988 0 ifaddr 95 16K 18K 78643K 324 0 counters 43 33K 34K 78643K 111 0 ioctlops 0 0K 4K 78643K 1694 0 iov 0 0K 24K 78643K 284 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 3365 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 93 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 607 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 5833 0 sigio 0 0K 0K 78643K 72 0 proc 66 63K 95K 78643K 1062 0 subproc 32 2K 2K 78643K 136 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 573 0 in_multi 33 2K 2K 78643K 504 0 ether_multi 1 0K 0K 78643K 120 0 mrt 0 0K 0K 78643K 43 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 2K 78643K 757 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 228 258K 259K 78643K 14629 0 UVM aobj 131 8K 8K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 455 0 NDP 18 0K 0K 78643K 84 0 temp 156 3967K 4033K 78643K 34652 0 kqueue 3 4K 16K 78643K 200 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 29 0 23 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 96 139 0 137 1 0 1 1 0 8 0 rtentry 112 183 0 139 2 0 2 2 0 8 0 unpcb 120 1560 0 1550 1 0 1 1 0 8 0 syncache 272 66 0 66 9 9 0 1 0 8 0 tcpqe 32 59 0 59 8 8 0 1 0 8 0 tcpcb 592 1440 0 1432 21 19 2 5 0 8 0 inpcb 296 3471 0 3459 9 7 2 3 0 8 1 rttmr 72 7 0 7 2 2 0 1 0 8 0 nd6 48 40 0 34 1 0 1 1 0 8 0 pkpcb 40 68 0 68 6 6 0 1 0 8 0 kcovpl 48 8 0 6 1 0 1 1 0 8 0 ppxss 1128 12 0 12 3 3 0 1 0 8 0 pfstscr 40 5 0 5 1 1 0 1 0 8 0 pffrag 232 35 0 34 4 3 1 1 0 482 0 pffrnode 88 35 0 34 4 3 1 1 0 8 0 pffrent 40 1358 0 1357 4 3 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 30 0 26 2 1 1 1 0 8 0 pfstitem 24 118 0 116 1 0 1 1 0 8 0 pfstkey 112 133 0 131 2 1 1 2 0 8 0 pfstate 328 128 0 126 5 4 1 5 0 8 0 pfrule 1360 59 0 33 4 1 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 502 0 311 14 1 13 13 0 8 0 art_table 32 503 0 311 2 0 2 2 0 8 0 art_node 16 173 0 133 1 0 1 1 0 8 0 sysvmsgpl 40 61 0 41 1 0 1 1 0 8 0 semapl 112 605 0 595 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8782 0 7370 89 0 89 89 0 8 0 ffsino 272 8782 0 7370 95 0 95 95 0 8 0 nchpl 144 15739 0 14143 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 39685 0 39684 2 1 1 1 0 8 0 percpumem 16 66 0 34 1 0 1 1 0 8 0 vcpupl 1984 15 0 0 2 0 2 2 0 8 0 vmpool 560 17 0 2 2 0 2 2 0 8 0 pfiaddrpl 120 16 0 6 2 1 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 47582 0 47581 13 12 1 7 0 8 0 plimitpl 152 293 0 285 1 0 1 1 0 8 0 sigapl 424 6039 0 6007 4 0 4 4 0 8 0 futexpl 56 47532 0 47532 2 1 1 1 0 8 1 knotepl 112 363 0 343 1 0 1 1 0 8 0 kqueuepl 152 3125 0 3114 1 0 1 1 0 8 0 pipepl 304 564 0 553 14 12 2 2 0 8 0 fdescpl 496 6015 0 5999 3 0 3 3 0 8 0 filepl 152 22922 0 22818 8 3 5 7 0 8 1 lockfpl 104 783 0 782 1 0 1 1 0 8 0 lockfspl 48 340 0 339 1 0 1 1 0 8 0 sessionpl 120 24 0 13 1 0 1 1 0 8 0 pgrppl 48 44 0 33 1 0 1 1 0 8 0 ucredpl 96 2894 0 2878 1 0 1 1 0 8 0 zombiepl 144 6007 0 6007 1 0 1 1 0 8 1 processpl 1008 6039 0 6007 5 0 5 5 0 8 0 procpl 632 13447 0 13407 4 0 4 4 0 8 0 sosppl 144 52 0 51 1 0 1 1 0 8 0 sockpl 400 5266 0 5243 12 9 3 6 0 8 0 mcl64k 65536 23 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 22 0 0 2 0 2 2 0 8 0 mcl8k 8192 11 0 0 2 0 2 2 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 409 0 0 20 1 19 19 0 8 0 mtagpl 96 270 0 0 5 0 5 5 0 8 0 mbufpl 256 945 0 0 39 0 39 39 0 8 0 bufpl 280 12071 0 5798 449 0 449 449 0 8 0 anonpl 16 539631 0 532134 108 72 36 58 0 124 0 amapchunkpl 152 23349 0 23140 14 4 10 12 0 158 0 amappl16 192 24269 0 24017 109 96 13 34 0 8 0 amappl15 184 2041 0 2038 1 0 1 1 0 8 0 amappl14 176 1541 0 1538 2 1 1 1 0 8 0 amappl13 168 1239 0 1238 1 0 1 1 0 8 0 amappl12 160 40 0 34 1 0 1 1 0 8 0 amappl11 152 499 0 483 1 0 1 1 0 8 0 amappl10 144 879 0 872 1 0 1 1 0 8 0 amappl9 136 338 0 337 1 0 1 1 0 8 0 amappl8 128 399 0 280 4 0 4 4 0 8 0 amappl7 120 1190 0 1182 1 0 1 1 0 8 0 amappl6 112 590 0 563 1 0 1 1 0 8 0 amappl5 104 5490 0 5477 1 0 1 1 0 8 0 amappl4 96 1796 0 1763 1 0 1 1 0 8 0 amappl3 88 1851 0 1845 1 0 1 1 0 8 0 amappl2 80 43370 0 43287 3 1 2 3 0 8 0 amappl1 72 165345 0 164881 24 14 10 19 0 8 0 amappl 80 13852 0 13763 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 64 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 6032 0 6001 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6032 0 6001 1 0 1 1 0 8 0 vmmpekpl 168 32106 0 32067 2 0 2 2 0 8 0 vmmpepl 168 740958 0 739365 155 79 76 90 0 357 1 vmsppl 368 6031 0 6001 3 0 3 3 0 8 0 pdppl 4096 12071 0 12017 8 0 8 8 0 8 0 pvpl 32 2121721 0 2111038 335 233 102 143 0 265 14 pmappl 232 6031 0 6001 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 311 0 25 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8273aff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82881360) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82881360) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff800020ebe430,ffff80000004a400) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x19f __mp_lock(ffffffff82881360) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82881360) at __mp_lock+0x129 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffcc750, count: -9 ddb{0}> machine ddbcpu 1 Stopped at in6_pcbhashlookup+0xa0: movl 0xa4(%r14),%ebx ddb{1}> trace in6_pcbhashlookup(ffffffff8287ef00,ffff800020edc090,7,ffff8000006abd48,8f2c,0) at in6_pcbhashlookup+0xa0 sys/netinet6/in6_pcb.c:502 in6_pcbconnect(fffffd806f650b90,fffffd80793cc800) at in6_pcbconnect+0x44c sys/netinet6/in6_pcb.c:287 tcp_usrreq(fffffd806adfab00,4,0,fffffd80793cc800,0,ffff800020ec3650) at tcp_usrreq+0xaf9 sys/netinet/tcp_usrreq.c:228 sys_connect(ffff800020ec3650,ffff800020edc258,ffff800020edc2a0) at sys_connect+0x3df sys/kern/uipc_syscalls.c:381 syscall(ffff800020edc320) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020edc320) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1256c1458f0, count: -6