uvm_fault(0xffffffff8277aa10, 0xffffffff826722a0, 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, 0xffffffff826722a0, 0, 2) -> e m_copyback(ffff800022313960,760,0,ffff800022313b24,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022313960,760,0,ffff800022313b24,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800022313be0, count: 0 ddb{0}> trace m_copyback(ffff800022313960,760,0,ffff800022313b24,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022313960,760,0,ffff800022313b24,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a40,ffff800022313c08,fffffd806c9fd900) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800022313d08,0,ffff800000bb2000,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000abd000,ffff800022313fd8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800022313fd8,ffff800022313fe4,29,0,ffff800000abd000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000abd000,fffffd806c9fd900) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff8000223142c8,ffff800021901000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800022314120) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806ecdf758,ffff8000223142c8,11,fffffd807f7bf9c0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80680507d0,ffff8000223142c8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e02a10,f0,ffff8000223142c8,0,ffff8000223143b0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800020e02a10,ffff800022314360,ffff8000223143b0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800022314430) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022314430) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfdff2648450, count: -14 ddb{0}> show registers rdi 0 rsi 0x7fd35 acpi_pdirpa+0x6bb9d rbp 0xffff800022313940 rbx 0xffffffffffff810b rdx 0x7fd34 acpi_pdirpa+0x6bb9c rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0x96764b1b4e5f559 r12 0xfffffd806a068200 r13 0x730 r14 0x30 r15 0xffff800022313b40 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800022313880 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=10018 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800020e03668,0xffffffff82888178 process=0xffff80002411e7e0 user=0xffff80002230f000, vmspace=0xfffffd8068bdda28 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 24406 345851 95317 0 7 0 syz-executor.0 *24406 10018 95317 0 7 0x4000000 syz-executor.0 49966 283303 27012 0 3 0x80 nanosleep syz-executor.1 49966 341668 27012 0 3 0x4000080 netio syz-executor.1 49966 380788 27012 0 3 0x4000080 fsleep syz-executor.1 27012 216180 53843 0 3 0x82 nanosleep syz-executor.1 58368 325764 0 0 3 0x14280 nfsidl nfsio 96569 156460 0 0 3 0x14280 nfsidl nfsio 67747 494929 0 0 3 0x14280 nfsidl nfsio 45352 142848 0 0 3 0x14280 nfsidl nfsio 25657 436809 0 0 3 0x14280 nfsidl nfsio 47930 122831 0 0 3 0x14280 nfsidl nfsio 7029 93873 0 0 3 0x14280 nfsidl nfsio 24408 60496 0 0 3 0x14280 nfsidl nfsio 89294 380262 0 0 3 0x14280 nfsidl nfsio 67389 248362 0 0 3 0x14280 nfsidl nfsio 9988 391965 0 0 3 0x14280 nfsidl nfsio 16869 361223 0 0 3 0x14280 nfsidl nfsio 4467 108890 0 0 3 0x14280 nfsidl nfsio 11066 254859 0 0 3 0x14280 nfsidl nfsio 59409 344949 0 0 3 0x14280 nfsidl nfsio 75400 518273 0 0 3 0x14280 nfsidl nfsio 6423 489744 0 0 3 0x14280 nfsidl nfsio 33364 524137 0 0 3 0x14280 nfsidl nfsio 30198 375375 0 0 3 0x14280 nfsidl nfsio 77469 303007 0 0 3 0x14280 nfsidl nfsio 95317 415914 53843 0 3 0x82 nanosleep syz-executor.0 34143 214913 0 0 3 0x14200 bored sosplice 53843 184665 47839 0 3 0x82 thrsleep syz-fuzzer 53843 133708 47839 0 3 0x4000082 nanosleep syz-fuzzer 53843 267684 47839 0 3 0x4000082 kqread syz-fuzzer 53843 279761 47839 0 3 0x4000082 thrsleep syz-fuzzer 53843 371461 47839 0 3 0x4000082 thrsleep syz-fuzzer 53843 50425 47839 0 3 0x4000082 thrsleep syz-fuzzer 53843 251840 47839 0 3 0x4000082 thrsleep syz-fuzzer 53843 437738 47839 0 3 0x4000082 thrsleep syz-fuzzer 47839 477096 58092 0 3 0x10008a pause ksh 58092 331413 81775 0 3 0x92 select sshd 46537 313752 1 0 3 0x100083 ttyin getty 81775 184219 1 0 3 0x80 select sshd 58574 306211 88908 74 3 0x100092 bpf pflogd 88908 120250 1 0 3 0x80 netio pflogd 42082 166737 8333 73 3 0x100090 kqread syslogd 8333 489461 1 0 3 0x100082 netio syslogd 30890 520 1 77 3 0x100090 poll dhclient 33965 446226 1 0 3 0x80 poll dhclient 21560 426958 0 0 3 0x14200 bored smr 50277 149909 0 0 3 0x14200 pgzero zerothread 99618 4618 0 0 3 0x14200 aiodoned aiodoned 17127 449489 0 0 3 0x14200 syncer update 14062 176943 0 0 3 0x14200 cleaner cleaner 15991 377579 0 0 3 0x14200 reaper reaper 90624 352311 0 0 3 0x14200 pgdaemon pagedaemon 48163 90248 0 0 3 0x14200 bored crynlk 59421 199852 0 0 3 0x14200 bored crypto 88394 326295 0 0 3 0x40014200 acpi0 acpi0 54464 108306 0 0 3 0x40014200 idle1 99604 435432 0 0 3 0x14200 bored softnet 43997 519847 0 0 3 0x14200 bored systqmp 64611 396769 0 0 3 0x14200 bored systq 61989 232158 0 0 3 0x40014200 bored softclock 56905 50000 0 0 3 0x40014200 idle0 1 223180 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 24406 (syz-executor.0) thread 0xffff800020e02a10 (10018) 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 9540 6495K 7076K 78643K 12425 0 pcb 13 8K 8K 78643K 105 0 rtable 138 12K 12K 78643K 552 0 ifaddr 91 17K 17K 78643K 179 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 65 0 ioctlops 0 0K 4K 78643K 2270 0 iov 0 0K 16K 78643K 68 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1812 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 18 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 970 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 2797 0 proc 61 63K 95K 78643K 1273 0 subproc 32 2K 2K 78643K 102 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 69 0 in_multi 29 1K 2K 78643K 147 0 ether_multi 1 0K 0K 78643K 16 0 mrt 0 0K 0K 78643K 2 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 2K 78643K 510 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 153 56K 65K 78643K 8522 0 UVM aobj 25 7K 7K 78643K 27 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 74 0 NDP 15 0K 0K 78643K 45 0 temp 146 3969K 4033K 78643K 18792 0 kqueue 3 4K 10K 78643K 21 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 14 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 49 0 47 1 0 1 1 0 8 0 rtentry 112 104 0 65 2 0 2 2 0 8 0 unpcb 120 2762 0 2752 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 89 0 89 1 1 0 1 0 8 0 tcpcb 592 213 0 203 4 2 2 2 0 8 0 inpcb 296 1433 0 1425 7 5 2 2 0 8 1 nd6 48 25 0 21 1 0 1 1 0 8 0 pkpcb 40 10 0 10 2 2 0 1 0 8 0 pfstscr 40 6 0 6 3 3 0 1 0 8 0 pffrag 232 6 0 4 3 2 1 1 0 482 0 pffrnode 88 6 0 4 3 2 1 1 0 8 0 pffrent 40 60 0 58 3 2 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 14 2 0 2 2 0 8 0 pfstitem 24 31 0 28 1 0 1 1 0 8 0 pfstkey 112 36 0 33 1 0 1 1 0 8 0 pfstate 328 32 0 29 2 0 2 2 0 8 0 pfsrctr 152 521 0 521 2 2 0 1 0 8 0 pfrule 1360 294 0 33 23 1 22 22 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 415 0 240 12 1 11 12 0 8 0 art_table 32 416 0 240 2 0 2 2 0 8 0 art_node 16 103 0 67 1 0 1 1 0 8 0 sysvmsgpl 40 36 0 19 2 1 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 960 0 950 1 0 1 1 0 8 0 shmpl 112 24 0 2 2 1 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4421 0 3017 89 0 89 89 0 8 0 ffsino 272 4421 0 3017 94 0 94 94 0 8 0 nchpl 144 9881 0 8295 60 0 60 60 0 8 0 uvmvnodes 72 4942 0 0 90 0 90 90 0 8 0 vnodes 208 4942 0 0 261 0 261 261 0 8 0 namei 1024 27538 0 27538 2 1 1 1 0 8 1 percpumem 16 43 0 11 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 10 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 68 0 1 3 0 3 3 0 8 0 scxspl 200 23029 0 23029 13 12 1 7 0 8 1 plimitpl 152 69 0 61 1 0 1 1 0 8 0 sigapl 424 3021 0 2968 6 0 6 6 0 8 0 futexpl 56 31547 0 31546 2 1 1 1 0 8 0 knotepl 112 129 0 109 1 0 1 1 0 8 0 kqueuepl 152 74 0 71 1 0 1 1 0 8 0 pipepl 304 196 0 185 7 5 2 2 0 8 0 fdescpl 496 2985 0 2968 3 0 3 3 0 8 0 filepl 152 15347 0 15241 7 2 5 6 0 8 0 lockfpl 104 165 0 164 1 0 1 1 0 8 0 lockfspl 48 61 0 60 1 0 1 1 0 8 0 sessionpl 120 22 0 11 1 0 1 1 0 8 0 pgrppl 48 642 0 631 1 0 1 1 0 8 0 ucredpl 96 5111 0 5101 1 0 1 1 0 8 0 zombiepl 144 2968 0 2968 2 1 1 1 0 8 1 processpl 1008 3021 0 2968 7 0 7 7 0 8 0 procpl 632 7799 0 7736 7 1 6 6 0 8 0 sosppl 144 10 0 10 4 4 0 1 0 8 0 sockpl 400 4256 0 4236 15 11 4 5 0 8 1 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 19 0 0 2 0 2 2 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 259 0 0 31 4 27 31 0 8 0 mtagpl 96 71 0 0 2 0 2 2 0 8 0 mbufpl 256 412 0 0 19 1 18 19 0 8 0 bufpl 280 6980 0 722 448 0 448 448 0 8 0 anonpl 16 264623 0 247203 108 33 75 88 0 124 0 amapchunkpl 152 14365 0 14110 19 8 11 15 0 158 0 amappl16 192 10237 0 9347 88 43 45 57 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 2289 0 2282 1 0 1 1 0 8 0 amappl13 168 52 0 50 1 0 1 1 0 8 0 amappl12 160 239 0 231 1 0 1 1 0 8 0 amappl11 152 282 0 266 1 0 1 1 0 8 0 amappl10 144 15 0 9 1 0 1 1 0 8 0 amappl9 136 383 0 382 1 0 1 1 0 8 0 amappl8 128 194 0 143 2 0 2 2 0 8 0 amappl7 120 306 0 299 1 0 1 1 0 8 0 amappl6 112 359 0 345 1 0 1 1 0 8 0 amappl5 104 2853 0 2838 1 0 1 1 0 8 0 amappl4 96 1040 0 1012 1 0 1 1 0 8 0 amappl3 88 2377 0 2369 1 0 1 1 0 8 0 amappl2 80 20392 0 20309 3 1 2 3 0 8 0 amappl1 72 96141 0 95642 24 14 10 19 0 8 0 amappl 80 8127 0 8050 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 26 0 2 1 0 1 1 0 8 0 uaddrrnd 24 2995 0 2972 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2995 0 2972 1 0 1 1 0 8 0 vmmpekpl 168 21761 0 21716 3 0 3 3 0 8 0 vmmpepl 168 380387 0 378138 187 65 122 129 0 357 24 vmsppl 368 2994 0 2972 4 1 3 3 0 8 0 pdppl 4096 5997 0 5950 7 1 6 7 0 8 0 pvpl 32 846667 0 825738 255 79 176 207 0 265 0 pmappl 232 2994 0 2972 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 310 0 24 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800022313960,760,0,ffff800022313b24,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022313960,760,0,ffff800022313b24,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a40,ffff800022313c08,fffffd806c9fd900) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800022313d08,0,ffff800000bb2000,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000abd000,ffff800022313fd8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800022313fd8,ffff800022313fe4,29,0,ffff800000abd000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000abd000,fffffd806c9fd900) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff8000223142c8,ffff800021901000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800022314120) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806ecdf758,ffff8000223142c8,11,fffffd807f7bf9c0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80680507d0,ffff8000223142c8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e02a10,f0,ffff8000223142c8,0,ffff8000223143b0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800020e02a10,ffff800022314360,ffff8000223143b0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800022314430) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022314430) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfdff2648450, 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x50 kd_curproc sys/dev/kcov.c:458 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x50 sys/dev/kcov.c:112 clock_gettime(ffff800020e03668,0,ffff800023f1be48) at clock_gettime+0x95 sys/kern/kern_time.c:116 sys_clock_gettime(ffff800020e03668,ffff800023f1beb0,ffff800023f1bf00) at sys_clock_gettime+0x4c sys/kern/kern_time.c:165 syscall(ffff800023f1bf80) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f1bf80) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc9b60, count: -8