uvm_fault(0xffffffff828778e0, 0xffffffff826791d0, 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(0xffffffff828778e0, 0xffffffff826791d0, 0, 2) -> e m_copyback(ffff800021f707c0,138,0,ffff800021f70984,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021f707c0,138,0,ffff800021f70984,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800021f70a40, count: 0 ddb{0}> trace m_copyback(ffff800021f707c0,138,0,ffff800021f70984,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021f707c0,138,0,ffff800021f70984,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044880,ffff800021f70a68,fffffd8066fa4600) at pflog_mtap+0x446 sys/net/if_pflog.c:388 pflog_packet(ffff800021f70b68,0,ffff800000b72560,0,ffffffff8287efd0,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000adc000,ffff800021f70e38) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800021f70e38,ffff800021f70e44,29,0,ffff800000adc000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000adc000,fffffd8066fa4600) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800021f71128,ffff800020eef000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff800021f70f80) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e73f758,ffff800021f71128,11,fffffd807f7bf9c0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806b746608,ffff800021f71128,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800021f653e8,f0,ffff800021f71128,0,ffff800021f71210) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800021f653e8,ffff800021f711c0,ffff800021f71210) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800021f71290) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f71290) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x60b33e79b80, count: -14 ddb{0}> show registers rdi 0 rsi 0x86199 acpi_pdirpa+0x72001 rbp 0xffff800021f707a0 rbx 0xffffffffffff8311 rdx 0x86198 acpi_pdirpa+0x72000 rcx 0xffffffff826b7940 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81ec9e48 pf_translate_a+0x1a8 r10 0x1 r11 0x5f6685d5526f39e1 r12 0xfffffd806c694900 r13 0x108 r14 0x30 r15 0xffff800021f709a0 rip 0xffffffff81164839 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f706e0 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=416239 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021f64ef8,0xffffffff828858a0 process=0xffff800021f4a3f0 user=0xffff800021f6c000, vmspace=0xfffffd8074974d00 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61553 293356 17816 0 2 0 syz-executor.0 *61553 416239 17816 0 7 0x4000000 syz-executor.0 16474 212560 91940 0 2 0 syz-executor.1 16474 119577 91940 0 7 0x4000000 syz-executor.1 98980 165791 0 0 3 0x14280 nfsidl nfsio 14215 411717 0 0 3 0x14280 nfsidl nfsio 26487 57251 0 0 3 0x14280 nfsidl nfsio 39608 357759 0 0 3 0x14280 nfsidl nfsio 20110 420028 0 0 3 0x14280 nfsidl nfsio 25114 37853 0 0 3 0x14280 nfsidl nfsio 88167 382079 0 0 3 0x14280 nfsidl nfsio 97287 139085 0 0 3 0x14280 nfsidl nfsio 58634 160508 0 0 3 0x14280 nfsidl nfsio 70404 491932 0 0 3 0x14280 nfsidl nfsio 60336 407853 0 0 3 0x14280 nfsidl nfsio 68067 181767 0 0 3 0x14280 nfsidl nfsio 97028 290014 0 0 3 0x14280 nfsidl nfsio 90197 503713 0 0 3 0x14280 nfsidl nfsio 25089 335761 0 0 3 0x14280 nfsidl nfsio 30684 267713 0 0 3 0x14280 nfsidl nfsio 11031 511471 0 0 3 0x14280 nfsidl nfsio 98883 320010 0 0 3 0x14280 nfsidl nfsio 20043 490737 0 0 3 0x14280 nfsidl nfsio 24237 295143 0 0 3 0x14280 nfsidl nfsio 91940 441651 70403 0 3 0x82 nanosleep syz-executor.1 56411 406734 0 0 3 0x14200 bored sosplice 17816 407769 70403 0 3 0x82 nanosleep syz-executor.0 70403 95777 61281 0 3 0x82 thrsleep syz-fuzzer 70403 378673 61281 0 3 0x4000082 thrsleep syz-fuzzer 70403 201255 61281 0 3 0x4000082 thrsleep syz-fuzzer 70403 128094 61281 0 3 0x4000082 kqread syz-fuzzer 70403 450534 61281 0 3 0x4000082 thrsleep syz-fuzzer 70403 509226 61281 0 3 0x4000082 thrsleep syz-fuzzer 70403 132313 61281 0 3 0x4000082 thrsleep syz-fuzzer 70403 245359 61281 0 3 0x4000082 thrsleep syz-fuzzer 61281 381872 43630 0 3 0x10008a pause ksh 43630 70580 66031 0 3 0x92 select sshd 11742 326093 1 0 3 0x100083 ttyin getty 66031 30585 1 0 3 0x80 select sshd 83 59088 67023 74 3 0x100092 bpf pflogd 67023 283685 1 0 3 0x80 netio pflogd 17736 234626 87693 73 3 0x100090 kqread syslogd 87693 23462 1 0 3 0x100082 netio syslogd 2055 391635 1 77 3 0x100090 poll dhclient 77771 370039 1 0 3 0x80 poll dhclient 16802 336659 0 0 3 0x14200 bored smr 25241 34313 0 0 2 0x14200 zerothread 85944 292641 0 0 3 0x14200 aiodoned aiodoned 2150 91406 0 0 3 0x14200 syncer update 69581 250994 0 0 3 0x14200 cleaner cleaner 45106 379547 0 0 3 0x14200 reaper reaper 44208 352343 0 0 3 0x14200 pgdaemon pagedaemon 97306 235575 0 0 3 0x14200 bored crynlk 10752 148130 0 0 3 0x14200 bored crypto 32495 24714 0 0 3 0x40014200 acpi0 acpi0 60389 394020 0 0 3 0x40014200 idle1 76591 297634 0 0 3 0x14200 bored softnet 26710 273638 0 0 3 0x14200 bored systqmp 34714 108314 0 0 3 0x14200 bored systq 66255 103147 0 0 3 0x40014200 bored softclock 34467 164674 0 0 3 0x40014200 idle0 1 275090 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 61553 (syz-executor.0) thread 0xffff800021f653e8 (416239) exclusive rwlock netlock r = 0 (0xffffffff826f7290) #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:866 #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:568 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8287dcc8) #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:568 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9544 6429K 7200K 78643K 18708 0 pcb 13 8K 8K 78643K 366 0 rtable 99 4K 8K 78643K 1415 0 ifaddr 80 15K 17K 78643K 458 0 sysctl 3 1K 1K 78643K 10 0 counters 43 33K 34K 78643K 173 0 ioctlops 0 0K 4K 78643K 2026 0 iov 0 0K 32K 78643K 343 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 3909 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 31 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 579 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 6838 0 sigio 0 0K 0K 78643K 95 0 proc 64 63K 95K 78643K 817 0 subproc 32 2K 2K 78643K 85 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 471 0 in_multi 28 1K 2K 78643K 517 0 ether_multi 1 0K 0K 78643K 88 0 mrt 0 0K 0K 78643K 67 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 2K 78643K 573 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 239 241K 241K 78643K 16849 0 UVM aobj 128 8K 8K 78643K 133 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 254 0 NDP 15 0K 0K 78643K 113 0 temp 155 3989K 4055K 78643K 40222 0 kqueue 3 4K 12K 78643K 250 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 11 0 7 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 96 289 0 287 1 0 1 1 0 8 0 rtentry 112 234 0 197 2 0 2 2 0 8 0 unpcb 120 1959 0 1931 6 5 1 2 0 8 0 syncache 272 41 0 41 6 6 0 1 0 8 0 tcpqe 32 50 0 50 8 8 0 1 0 8 0 tcpcb 592 1239 0 1235 26 22 4 5 0 8 3 inpcb 296 3197 0 3190 10 8 2 2 0 8 1 rttmr 72 20 0 20 2 2 0 1 0 8 0 nd6 48 62 0 58 1 0 1 1 0 8 0 pkpcb 40 7 0 7 1 1 0 1 0 8 0 kcovpl 48 5 0 3 1 0 1 1 0 8 0 swfcl 56 8 0 0 1 0 1 1 0 8 0 ppxss 1136 26 0 26 5 5 0 1 0 8 0 pfstscr 40 62 0 62 1 1 0 1 0 8 0 pffrag 232 5 0 4 1 0 1 1 0 482 0 pffrnode 88 5 0 4 1 0 1 1 0 8 0 pffrent 40 10 0 9 1 0 1 1 0 8 0 pfosfp 40 847 0 423 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrktable 1344 55 0 55 1 1 0 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 12 0 10 1 0 1 1 0 8 0 pfstkey 112 74 0 72 1 0 1 1 0 8 0 pfstate 328 43 0 41 2 1 1 2 0 8 0 pfrule 1360 81 0 47 5 1 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 848 0 676 15 4 11 14 0 8 0 art_table 32 849 0 676 2 0 2 2 0 8 0 art_node 16 224 0 190 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 0 1 0 1 1 0 8 0 semapl 112 577 0 567 1 0 1 1 0 8 0 shmpl 112 130 0 5 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 10352 0 8946 90 1 89 89 0 8 0 ffsino 272 10352 0 8946 95 0 95 95 0 8 0 nchpl 144 18753 0 17162 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 45927 0 45927 3 2 1 1 0 8 1 percpumem 16 97 0 65 1 0 1 1 0 8 0 vcpupl 1984 14 0 0 2 0 2 2 0 8 0 vmpool 560 14 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 22 0 22 1 1 0 1 0 8 0 scsiplug 72 12 0 12 2 2 0 1 0 8 0 scxspl 200 57043 0 57043 10 9 1 6 0 8 1 plimitpl 152 253 0 245 1 0 1 1 0 8 0 sigapl 424 7066 0 7013 6 0 6 6 0 8 0 futexpl 56 54550 0 54550 4 3 1 1 0 8 1 knotepl 112 397 0 377 1 0 1 1 0 8 0 kqueuepl 152 3561 0 3559 1 0 1 1 0 8 0 pipepl 304 294 0 283 7 5 2 2 0 8 0 fdescpl 496 7030 0 7013 3 0 3 3 0 8 0 filepl 152 25439 0 25337 7 2 5 6 0 8 1 lockfpl 104 767 0 766 1 0 1 1 0 8 0 lockfspl 48 337 0 336 1 0 1 1 0 8 0 sessionpl 120 21 0 10 1 0 1 1 0 8 0 pgrppl 48 31 0 20 1 0 1 1 0 8 0 ucredpl 96 3257 0 3248 1 0 1 1 0 8 0 zombiepl 144 7013 0 7013 2 1 1 1 0 8 1 processpl 1008 7066 0 7013 7 0 7 7 0 8 0 procpl 632 15506 0 15444 6 0 6 6 0 8 0 sosppl 144 92 0 92 6 5 1 1 0 8 1 sockpl 400 5466 0 5429 15 10 5 6 0 8 1 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 21 0 0 2 0 2 2 0 8 0 mcl9k 9216 18 0 0 2 0 2 2 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 33 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 307 0 0 16 0 16 16 0 8 0 mtagpl 96 471 0 0 12 0 12 12 0 8 0 mbufpl 256 1319 0 0 78 1 77 77 0 8 0 bufpl 280 15137 0 8879 448 0 448 448 0 8 0 anonpl 16 555912 0 548553 83 50 33 55 0 124 0 amapchunkpl 152 26332 0 26130 20 11 9 15 0 158 0 amappl16 192 25189 0 24936 57 44 13 34 0 8 0 amappl15 184 5 0 3 2 1 1 1 0 8 0 amappl14 176 27 0 20 1 0 1 1 0 8 0 amappl13 168 64 0 63 1 0 1 1 0 8 0 amappl12 160 2716 0 2710 1 0 1 1 0 8 0 amappl11 152 78 0 63 1 0 1 1 0 8 0 amappl10 144 3394 0 3388 1 0 1 1 0 8 0 amappl9 136 368 0 368 1 1 0 1 0 8 0 amappl8 128 354 0 247 4 0 4 4 0 8 0 amappl7 120 3671 0 3660 1 0 1 1 0 8 0 amappl6 112 146 0 124 1 0 1 1 0 8 0 amappl5 104 9820 0 9806 1 0 1 1 0 8 0 amappl4 96 374 0 344 1 0 1 1 0 8 0 amappl3 88 235 0 228 1 0 1 1 0 8 0 amappl2 80 48654 0 48563 3 1 2 3 0 8 0 amappl1 72 188391 0 187907 24 14 10 19 0 8 0 amappl 80 15887 0 15799 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 64 132 0 5 3 0 3 3 0 8 0 uaddrrnd 24 7044 0 7013 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7044 0 7013 1 0 1 1 0 8 0 vmmpekpl 168 34078 0 34034 3 0 3 3 0 8 0 vmmpepl 168 847161 0 845470 139 63 76 90 0 357 2 vmsppl 368 7043 0 7013 3 0 3 3 0 8 0 pdppl 4096 14095 0 14040 8 1 7 7 0 8 0 pvpl 32 2527256 0 2516514 245 153 92 137 0 265 0 pmappl 232 7043 0 7013 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 349 0 28 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800021f707c0,138,0,ffff800021f70984,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021f707c0,138,0,ffff800021f70984,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044880,ffff800021f70a68,fffffd8066fa4600) at pflog_mtap+0x446 sys/net/if_pflog.c:388 pflog_packet(ffff800021f70b68,0,ffff800000b72560,0,ffffffff8287efd0,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000adc000,ffff800021f70e38) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800021f70e38,ffff800021f70e44,29,0,ffff800000adc000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000adc000,fffffd8066fa4600) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800021f71128,ffff800020eef000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff800021f70f80) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e73f758,ffff800021f71128,11,fffffd807f7bf9c0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806b746608,ffff800021f71128,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800021f653e8,f0,ffff800021f71128,0,ffff800021f71210) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800021f653e8,ffff800021f711c0,ffff800021f71210) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800021f71290) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f71290) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x60b33e79b80, 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+0x74 kd_curproc sys/dev/kcov.c:458 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x74 sys/dev/kcov.c:112 __mp_lock(ffffffff8287dac0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8287dac0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 sys_futex(ffff800021f64ef8,ffff800021f6b470,ffff800021f6b4c0) at sys_futex+0xf6 sys/kern/sys_futex.c:109 syscall(ffff800021f6b540) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f6b540) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd7e5d3f88c0, count: -8