uvm_fault(0xffffffff8277aa10, 0xffffffff82694ad8, 0, 2) -> e kernel: page fault trap, code=0 Stopped at m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff8277aa10, 0xffffffff82694ad8, 0, 2) -> e m_copyback(ffff800022fcedd0,138,0,ffff800022fcef94,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022fcedd0,138,0,ffff800022fcef94,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800022fcf050, count: 0 ddb{0}> trace m_copyback(ffff800022fcedd0,138,0,ffff800022fcef94,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022fcedd0,138,0,ffff800022fcef94,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff8000000449c0,ffff800022fcf078,fffffd8066c24200) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800022fcf178,0,ffff800000b4cff0,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b59800,ffff800022fcf448) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800022fcf448,ffff800022fcf454,29,0,ffff800000b59800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b59800,fffffd8066c24200) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800022fcf738,ffff80002410f000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800022fcf590) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd807b8e91c0,ffff800022fcf738,11,fffffd807f7bf600) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806851fac8,ffff800022fcf738,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800021fb4f00,f0,ffff800022fcf738,0,ffff800022fcf820) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800021fb4f00,ffff800022fcf7d0,ffff800022fcf820) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800022fcf8a0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022fcf8a0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc201f5ac0, count: -14 ddb{0}> show registers rdi 0 rsi 0x7af17 acpi_pdirpa+0x66d7f rbp 0xffff800022fcedb0 rbx 0xffffffffffffc612 rdx 0x7af16 acpi_pdirpa+0x66d7e rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0x1c0bb7523020dc4 r12 0xfffffd8063d70300 r13 0x108 r14 0x30 r15 0xffff800022fcefb0 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800022fcecf0 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=92645 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800021fb4a10,0xffffffff82888178 process=0xffff800021fa77a0 user=0xffff800022fca000, vmspace=0xfffffd807effe8a0 estcpu=30, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 22694 341541 39472 0 2 0 syz-executor.0 *22694 92645 39472 0 7 0x4000000 syz-executor.0 39472 230169 59929 0 3 0x82 nanosleep syz-executor.0 7753 511939 1 0 3 0x100083 ttyin getty 75999 223551 0 0 3 0x14280 nfsidl nfsio 57829 264867 0 0 3 0x14280 nfsidl nfsio 48481 33885 0 0 3 0x14280 nfsidl nfsio 2629 24200 0 0 3 0x14280 nfsidl nfsio 56897 325313 0 0 3 0x14280 nfsidl nfsio 91686 234797 0 0 3 0x14280 nfsidl nfsio 32886 506901 0 0 3 0x14280 nfsidl nfsio 90188 294844 0 0 3 0x14280 nfsidl nfsio 58423 13948 0 0 3 0x14280 nfsidl nfsio 4189 243486 0 0 3 0x14280 nfsidl nfsio 87177 469908 0 0 3 0x14280 nfsidl nfsio 66097 169835 0 0 3 0x14280 nfsidl nfsio 1856 246116 0 0 3 0x14280 nfsidl nfsio 9604 204869 0 0 3 0x14280 nfsidl nfsio 72523 309124 0 0 3 0x14280 nfsidl nfsio 31591 213063 0 0 3 0x14280 nfsidl nfsio 47274 447047 0 0 3 0x14280 nfsidl nfsio 10193 79398 0 0 3 0x14280 nfsidl nfsio 33522 421675 0 0 3 0x14280 nfsidl nfsio 13648 520842 0 0 3 0x14280 nfsidl nfsio 25957 203092 59929 0 3 0x82 piperd syz-executor.1 71651 267109 0 0 3 0x14200 bored sosplice 59929 475703 2082 0 3 0x82 thrsleep syz-fuzzer 59929 150587 2082 0 3 0x4000082 nanosleep syz-fuzzer 59929 431148 2082 0 3 0x4000082 thrsleep syz-fuzzer 59929 55483 2082 0 3 0x4000082 kqread syz-fuzzer 59929 356094 2082 0 3 0x4000082 thrsleep syz-fuzzer 59929 76298 2082 0 2 0x4000002 syz-fuzzer 59929 344665 2082 0 3 0x4000082 thrsleep syz-fuzzer 59929 244769 2082 0 3 0x4000082 thrsleep syz-fuzzer 2082 57860 83479 0 3 0x10008a pause ksh 83479 430490 18863 0 3 0x92 select sshd 18863 398788 1 0 3 0x80 select sshd 3889 285097 78790 74 3 0x100092 bpf pflogd 78790 146372 1 0 3 0x80 netio pflogd 80945 264737 4826 73 3 0x100090 kqread syslogd 4826 17500 1 0 3 0x100082 netio syslogd 30042 458945 1 77 3 0x100090 poll dhclient 53192 222521 1 0 3 0x80 poll dhclient 11081 23985 0 0 3 0x14200 bored smr 68811 496761 0 0 2 0x14200 zerothread 69515 223514 0 0 3 0x14200 aiodoned aiodoned 93415 139448 0 0 3 0x14200 syncer update 97041 334730 0 0 3 0x14200 cleaner cleaner 58130 381722 0 0 3 0x14200 reaper reaper 79500 243149 0 0 3 0x14200 pgdaemon pagedaemon 27884 387045 0 0 3 0x14200 bored crynlk 10682 393717 0 0 3 0x14200 bored crypto 41470 163876 0 0 3 0x40014200 acpi0 acpi0 10547 463036 0 0 7 0x40014200 idle1 45610 322841 0 0 3 0x14200 bored softnet 91201 419820 0 0 3 0x14200 bored systqmp 5740 485297 0 0 3 0x14200 bored systq 86424 521230 0 0 3 0x40014200 bored softclock 24352 168540 0 0 3 0x40014200 idle0 1 333152 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 22694 (syz-executor.0) thread 0xffff800021fb4f00 (92645) exclusive rwlock netlock r = 0 (0xffffffff827435e0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 tun_dev_write+0x1f9 sys/net/if_tun.c:867 #2 spec_write+0xd4 sys/kern/spec_vnops.c:309 #3 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 #4 vn_write+0x14e sys/kern/vfs_vnops.c:414 #5 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #6 sys_write+0x83 sys/kern/sys_generic.c:285 #7 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8289f9d8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #3 sys_write+0x83 sys/kern/sys_generic.c:285 #4 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9548 6452K 6837K 78643K 13181 0 pcb 13 8K 8K 78643K 265 0 rtable 94 8K 10K 78643K 1113 0 ifaddr 90 17K 19K 78643K 362 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 139 0 ioctlops 0 0K 8K 78643K 3392 0 iov 0 0K 16K 78643K 183 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 2128 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 47 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 26 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 2249 0 sigio 1 0K 0K 78643K 18 0 proc 62 63K 95K 78643K 734 0 subproc 32 2K 2K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 832 0 in_multi 22 1K 2K 78643K 321 0 ether_multi 1 0K 0K 78643K 40 0 mrt 1 0K 0K 78643K 24 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 2K 78643K 555 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 181 173K 174K 78643K 7354 0 UVM aobj 53 7K 7K 78643K 58 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 255 0 NDP 16 0K 0K 78643K 98 0 temp 159 3989K 4055K 78643K 27617 0 kqueue 3 4K 13K 78643K 84 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 26 0 20 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 113 0 111 1 0 1 1 0 8 0 rtentry 112 230 0 206 2 0 2 2 0 8 0 unpcb 120 1490 0 1478 1 0 1 1 0 8 0 syncache 272 16 0 16 8 8 0 1 0 8 0 tcpqe 32 66 0 66 3 3 0 1 0 8 0 tcpcb 592 671 0 667 10 9 1 2 0 8 0 inpcb 296 2733 0 2726 13 11 2 2 0 8 1 rttmr 72 6 0 6 2 2 0 1 0 8 0 nd6 48 60 0 58 1 0 1 1 0 8 0 pkpcb 40 12 0 12 4 4 0 1 0 8 0 ppxss 1136 4 0 4 4 3 1 1 0 8 1 pffrag 232 23 0 23 4 4 0 1 0 482 0 pffrnode 88 23 0 23 4 4 0 1 0 8 0 pffrent 40 483 0 483 5 5 0 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 25 0 15 2 1 1 2 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 264 2 0 2 1 1 0 1 0 8 0 pfstitem 24 13 0 11 1 0 1 1 0 8 0 pfstkey 112 13 0 11 1 0 1 1 0 8 0 pfstate 328 13 0 11 2 1 1 2 0 8 0 pfsrctr 152 174 0 174 3 3 0 1 0 8 0 pfrule 1360 57 0 19 5 1 4 4 0 8 0 art_heap8 4096 3 0 2 3 2 1 2 0 8 0 art_heap4 256 1019 0 927 22 14 8 16 0 8 0 art_table 32 1022 0 929 3 1 2 3 0 8 0 art_node 16 228 0 209 1 0 1 1 0 8 0 sysvmsgpl 40 43 0 27 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 12 0 2 1 0 1 1 0 8 0 shmpl 112 55 0 5 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4190 0 2790 88 0 88 88 0 8 0 ffsino 272 4190 0 2790 94 0 94 94 0 8 0 nchpl 144 8007 0 6415 60 0 60 60 0 8 0 uvmvnodes 72 4898 0 0 90 0 90 90 0 8 0 vnodes 208 4898 0 0 258 0 258 258 0 8 0 namei 1024 23629 0 23629 5 4 1 1 0 8 1 percpumem 16 80 0 48 1 0 1 1 0 8 0 vcpupl 1984 17 0 0 3 0 3 3 0 8 0 vmpool 560 29 0 12 3 1 2 2 0 8 0 pfiaddrpl 120 13 0 6 1 0 1 1 0 8 0 scxspl 200 22588 0 22588 14 13 1 6 0 8 1 plimitpl 152 166 0 158 1 0 1 1 0 8 0 sigapl 424 2474 0 2422 6 0 6 6 0 8 0 futexpl 56 36876 0 36876 4 3 1 1 0 8 1 knotepl 112 202 0 182 1 0 1 1 0 8 0 kqueuepl 152 257 0 250 1 0 1 1 0 8 0 pipepl 304 347 0 336 15 14 1 2 0 8 0 fdescpl 496 2438 0 2422 3 0 3 3 0 8 0 filepl 152 15752 0 15650 8 3 5 6 0 8 1 lockfpl 104 422 0 420 1 0 1 1 0 8 0 lockfspl 48 137 0 135 1 0 1 1 0 8 0 sessionpl 120 23 0 12 1 0 1 1 0 8 0 pgrppl 48 40 0 29 1 0 1 1 0 8 0 ucredpl 96 1848 0 1839 1 0 1 1 0 8 0 zombiepl 144 2422 0 2422 3 2 1 1 0 8 1 processpl 1008 2474 0 2422 7 0 7 7 0 8 0 procpl 632 6600 0 6540 7 1 6 6 0 8 0 srpgc 72 2 0 2 1 1 0 1 0 8 0 sosppl 144 30 0 30 11 11 0 1 0 8 0 sockpl 400 4363 0 4341 20 16 4 6 0 8 1 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 21 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 174 0 0 20 0 20 20 0 8 0 mtagpl 96 61 0 0 1 0 1 1 0 8 0 mbufpl 256 563 0 0 29 0 29 29 0 8 0 bufpl 280 7556 0 1298 448 0 448 448 0 8 0 anonpl 16 251617 0 232059 130 50 80 96 0 124 0 amapchunkpl 152 13759 0 13412 64 49 15 28 0 158 0 amappl16 192 9032 0 8126 86 38 48 58 0 8 0 amappl15 184 153 0 152 1 0 1 1 0 8 0 amappl14 176 1405 0 1401 1 0 1 1 0 8 0 amappl13 168 57 0 55 1 0 1 1 0 8 0 amappl12 160 264 0 259 1 0 1 1 0 8 0 amappl11 152 77 0 61 1 0 1 1 0 8 0 amappl10 144 191 0 186 1 0 1 1 0 8 0 amappl9 136 566 0 566 2 2 0 1 0 8 0 amappl8 128 386 0 340 2 0 2 2 0 8 0 amappl7 120 479 0 470 1 0 1 1 0 8 0 amappl6 112 150 0 131 1 0 1 1 0 8 0 amappl5 104 1408 0 1394 1 0 1 1 0 8 0 amappl4 96 1729 0 1702 1 0 1 1 0 8 0 amappl3 88 1528 0 1520 1 0 1 1 0 8 0 amappl2 80 16511 0 16441 3 1 2 3 0 8 0 amappl1 72 82132 0 81667 24 14 10 19 0 8 0 amappl 80 6953 0 6858 3 0 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 57 0 5 1 0 1 1 0 8 0 uaddrrnd 24 2467 0 2434 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2467 0 2434 1 0 1 1 0 8 0 vmmpekpl 168 19206 0 19154 3 0 3 3 0 8 0 vmmpepl 168 316724 0 314562 262 165 97 130 0 357 0 vmsppl 368 2466 0 2434 4 1 3 3 0 8 0 pdppl 4096 4941 0 4885 9 1 8 8 0 8 0 pvpl 32 753216 0 730853 310 128 182 219 0 265 0 pmappl 232 2466 0 2434 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 320 0 49 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800022fcedd0,138,0,ffff800022fcef94,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022fcedd0,138,0,ffff800022fcef94,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff8000000449c0,ffff800022fcf078,fffffd8066c24200) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800022fcf178,0,ffff800000b4cff0,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b59800,ffff800022fcf448) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800022fcf448,ffff800022fcf454,29,0,ffff800000b59800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b59800,fffffd8066c24200) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800022fcf738,ffff80002410f000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800022fcf590) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd807b8e91c0,ffff800022fcf738,11,fffffd807f7bf600) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806851fac8,ffff800022fcf738,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800021fb4f00,f0,ffff800022fcf738,0,ffff800022fcf820) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800021fb4f00,ffff800022fcf7d0,ffff800022fcf820) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800022fcf8a0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022fcf8a0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc201f5ac0, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d80ff0) 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 acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1187 sched_idle(ffff800020d80ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5