uvm_fault(0xffffffff8284cf30, 0xffffffff82686708, 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(0xffffffff8284cf30, 0xffffffff82686708, 0, 2) -> e m_copyback(ffff800022b80b70,138,0,ffff800022b80d34,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022b80b70,138,0,ffff800022b80d34,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800022b80df0, count: 0 ddb{0}> trace m_copyback(ffff800022b80b70,138,0,ffff800022b80d34,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022b80b70,138,0,ffff800022b80d34,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044ac0,ffff800022b80e18,fffffd807090cc00) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff800022b80f18,0,ffff800000ac6fe8,0,ffffffff828c1828,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b4c800,ffff800022b811e8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800022b811e8,ffff800022b811f4,29,0,ffff800000b4c800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b4c800,fffffd807090cc00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800022b814d8,ffff800021ed2000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff800022b81330) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e9395b8,ffff800022b814d8,11,fffffd807f7b7a80) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd806cada438,ffff800022b814d8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800022ae2d00,f0,ffff800022b814d8,0,ffff800022b815c0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800022ae2d00,ffff800022b81570,ffff800022b815c0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800022b81640) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022b81640) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc8920ed9a80, count: -14 ddb{0}> show registers rdi 0 rsi 0x8e993 acpi_pdirpa+0x7a7fb rbp 0xffff800022b80b50 rbx 0xffffffffffffb4c0 rdx 0x8e992 acpi_pdirpa+0x7a7fa rcx 0xffffffff826ac100 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0x1 r10 0x80cef20c90a5f6b3 r11 0x7c2a1e639043c224 r12 0xfffffd806d27d900 r13 0x108 r14 0x30 r15 0xffff800022b80d50 rip 0xffffffff8106bda9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800022b80a90 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=149659 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800022ae22c0,0xffffffff828d3378 process=0xffff8000212c8018 user=0xffff800022b7c000, vmspace=0xfffffd806e954e68 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 83658 404743 12080 0 7 0 syz-executor.0 *83658 149659 12080 0 7 0x4000000 syz-executor.0 579 310522 99110 0 3 0x82 nanosleep syz-executor.1 20784 204440 0 0 3 0x14280 nfsidl nfsio 72269 128124 0 0 3 0x14280 nfsidl nfsio 13363 205187 0 0 3 0x14280 nfsidl nfsio 53883 502568 0 0 3 0x14280 nfsidl nfsio 54215 462980 0 0 3 0x14280 nfsidl nfsio 48346 440257 0 0 3 0x14280 nfsidl nfsio 54481 304362 0 0 3 0x14280 nfsidl nfsio 69155 192560 0 0 3 0x14280 nfsidl nfsio 97232 493463 0 0 3 0x14280 nfsidl nfsio 20492 362626 0 0 3 0x14280 nfsidl nfsio 26397 75322 0 0 3 0x14280 nfsidl nfsio 31831 236514 0 0 3 0x14280 nfsidl nfsio 26713 273045 0 0 3 0x14280 nfsidl nfsio 6010 80476 0 0 3 0x14280 nfsidl nfsio 62212 435877 0 0 3 0x14280 nfsidl nfsio 50886 280036 0 0 3 0x14280 nfsidl nfsio 36308 513298 0 0 3 0x14280 nfsidl nfsio 85819 478469 0 0 3 0x14280 nfsidl nfsio 84600 444977 0 0 3 0x14280 nfsidl nfsio 51770 219053 0 0 3 0x14280 nfsidl nfsio 12080 160418 99110 0 3 0x82 nanosleep syz-executor.0 37376 96475 0 0 3 0x14200 bored sosplice 42452 176593 1 0 3 0x100083 ttyin getty 99110 89271 28329 0 3 0x82 thrsleep syz-fuzzer 99110 198970 28329 0 3 0x4000082 nanosleep syz-fuzzer 99110 81380 28329 0 3 0x4000082 thrsleep syz-fuzzer 99110 88815 28329 0 3 0x4000082 kqread syz-fuzzer 99110 68728 28329 0 3 0x4000082 thrsleep syz-fuzzer 99110 48495 28329 0 3 0x4000082 thrsleep syz-fuzzer 99110 328972 28329 0 3 0x4000082 thrsleep syz-fuzzer 99110 416522 28329 0 3 0x4000082 thrsleep syz-fuzzer 99110 312796 28329 0 3 0x4000082 thrsleep syz-fuzzer 28329 524148 58293 0 3 0x10008a pause ksh 58293 287696 41103 0 3 0x92 select sshd 41103 499519 1 0 3 0x80 select sshd 77341 451472 46837 74 3 0x100092 bpf pflogd 46837 197021 1 0 3 0x80 netio pflogd 54397 39947 79081 73 3 0x100090 kqread syslogd 79081 512171 1 0 3 0x100082 netio syslogd 51963 1059 1 77 3 0x100090 poll dhclient 85310 161317 1 0 3 0x80 poll dhclient 93394 386147 0 0 3 0x14200 bored smr 17073 50919 0 0 2 0x14200 zerothread 33042 367158 0 0 3 0x14200 aiodoned aiodoned 92140 496023 0 0 3 0x14200 syncer update 94499 237597 0 0 3 0x14200 cleaner cleaner 25065 308109 0 0 3 0x14200 reaper reaper 24965 52821 0 0 3 0x14200 pgdaemon pagedaemon 84668 464874 0 0 3 0x14200 bored crynlk 2263 240195 0 0 3 0x14200 bored crypto 66266 452008 0 0 3 0x14200 bored viomb 83394 168089 0 0 3 0x40014200 acpi0 acpi0 39089 513313 0 0 3 0x40014200 idle1 66525 116638 0 0 3 0x14200 bored softnet 97897 461874 0 0 3 0x14200 bored systqmp 86653 42945 0 0 3 0x14200 bored systq 93209 6384 0 0 3 0x40014200 bored softclock 81530 69233 0 0 3 0x40014200 idle0 1 123190 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 83658 (syz-executor.0) thread 0xffff800022ae2d00 (149659) exclusive rwlock netlock r = 0 (0xffffffff827509e0) #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:274 #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:590 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828bace8) #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:590 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9528 6441K 7126K 78643K 13819 0 pcb 13 8K 8K 78643K 118 0 rtable 113 5K 5K 78643K 446 0 ifaddr 72 14K 14K 78643K 131 0 counters 43 33K 34K 78643K 65 0 ioctlops 0 0K 4K 78643K 1581 0 iov 0 0K 16K 78643K 77 0 mount 1 1K 1K 78643K 1 0 vnodes 1233 78K 78K 78643K 2247 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 17 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 177 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1825 197K 290K 78643K 13109 0 file desc 5 13K 25K 78643K 2637 0 proc 62 63K 95K 78643K 726 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 177 0 in_multi 33 2K 2K 78643K 101 0 ether_multi 1 0K 0K 78643K 21 0 mrt 0 0K 0K 78643K 12 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 498 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 223 276K 276K 78643K 6895 0 UVM aobj 5 2K 2K 78643K 5 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 108 0 NDP 12 0K 0K 78643K 32 0 temp 143 3969K 4083K 78643K 22137 0 kqueue 3 4K 8K 78643K 112 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 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 93 0 91 1 0 1 1 0 8 0 rtentry 112 72 0 28 2 0 2 2 0 8 0 unpcb 120 801 0 786 2 1 1 2 0 8 0 syncache 296 33 0 33 4 4 0 1 0 8 0 tcpqe 32 13 0 13 2 2 0 1 0 8 0 tcpcb 736 454 0 443 9 5 4 6 0 8 0 inpcb 296 1131 0 1117 3 1 2 2 0 8 0 rttmr 72 4 0 4 1 1 0 1 0 8 0 nd6 48 12 0 6 1 0 1 1 0 8 0 kcovpl 48 4 0 2 1 0 1 1 0 8 0 ppxss 1128 4 0 4 1 1 0 1 0 8 0 pfstscr 40 13 0 13 1 1 0 1 0 8 0 pffrag 232 13 0 13 2 2 0 1 0 482 0 pffrnode 88 13 0 13 2 2 0 1 0 8 0 pffrent 40 370 0 370 2 2 0 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 3 0 1 1 0 1 1 0 8 0 pfstitem 24 36 0 34 1 0 1 1 0 8 0 pfstkey 112 60 0 58 1 0 1 1 0 8 0 pfstate 328 47 0 45 3 2 1 3 0 8 0 pfrule 1360 51 0 40 3 1 2 2 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 280 0 89 12 0 12 12 0 8 0 art_table 32 281 0 89 2 0 2 2 0 8 0 art_node 16 71 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 1 1 0 1 1 0 8 0 semupl 112 14 0 14 1 1 0 1 0 8 0 semapl 112 168 0 158 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4590 0 3184 89 0 89 89 0 8 0 ffsino 272 4590 0 3184 95 1 94 95 0 8 0 nchpl 144 7805 0 6227 60 0 60 60 0 8 0 uvmvnodes 72 5439 0 0 99 0 99 99 0 8 0 vnodes 208 5439 0 0 287 0 287 287 0 8 0 namei 1024 19512 0 19512 1 0 1 1 0 8 1 percpumem 16 43 0 11 1 0 1 1 0 8 0 vcpupl 1984 17 0 0 3 0 3 3 0 8 0 vmpool 560 26 0 9 2 0 2 2 0 8 0 pfiaddrpl 120 5 0 0 1 0 1 1 0 8 0 scxspl 216 22467 0 22467 8 7 1 7 0 8 1 plimitpl 152 143 0 135 1 0 1 1 0 8 0 sigapl 424 2869 0 2816 7 0 7 7 0 8 1 futexpl 56 17647 0 17647 1 0 1 1 0 8 1 knotepl 112 193 0 173 1 0 1 1 0 8 0 kqueuepl 152 1221 0 1219 1 0 1 1 0 8 0 pipepl 304 160 0 149 6 5 1 2 0 8 0 fdescpl 496 2832 0 2816 3 0 3 3 0 8 0 filepl 152 9742 0 9640 6 1 5 6 0 8 1 lockfpl 104 274 0 273 1 0 1 1 0 8 0 lockfspl 48 99 0 98 1 0 1 1 0 8 0 sessionpl 144 21 0 10 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 1212 0 1203 1 0 1 1 0 8 0 zombiepl 144 2816 0 2815 1 0 1 1 0 8 0 processpl 1056 2869 0 2815 4 0 4 4 0 8 0 procpl 656 6101 0 6038 7 1 6 6 0 8 0 sosppl 168 23 0 23 2 2 0 1 0 8 0 sockpl 400 2040 0 2008 10 5 5 6 0 8 1 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 12 0 0 2 0 2 2 0 8 0 mcl9k 9216 11 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 14 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 233 0 0 29 0 29 29 0 8 0 mtagpl 96 230 0 0 6 0 6 6 0 8 0 mbufpl 256 703 0 0 40 0 40 40 0 8 0 bufpl 280 8374 0 2127 447 0 447 447 0 8 0 anonpl 16 244665 0 231462 70 15 55 69 0 124 0 amapchunkpl 152 10902 0 10552 17 2 15 16 0 158 0 amappl16 192 10699 0 10194 42 16 26 37 0 8 0 amappl15 184 159 0 157 1 0 1 1 0 8 0 amappl14 176 23 0 18 1 0 1 1 0 8 0 amappl13 168 1663 0 1662 1 0 1 1 0 8 0 amappl12 160 10 0 6 1 0 1 1 0 8 0 amappl11 152 66 0 50 1 0 1 1 0 8 0 amappl10 144 816 0 812 1 0 1 1 0 8 0 amappl9 136 374 0 374 1 0 1 1 0 8 1 amappl8 128 229 0 160 3 0 3 3 0 8 0 amappl7 120 271 0 261 1 0 1 1 0 8 0 amappl6 112 887 0 871 1 0 1 1 0 8 0 amappl5 104 2981 0 2962 1 0 1 1 0 8 0 amappl4 96 297 0 272 1 0 1 1 0 8 0 amappl3 88 1809 0 1802 1 0 1 1 0 8 0 amappl2 80 19104 0 19038 3 1 2 3 0 8 0 amappl1 72 91455 0 90982 25 15 10 19 0 8 0 amappl 80 6454 0 6351 3 0 3 3 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2858 0 2825 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2858 0 2825 1 0 1 1 0 8 0 vmmpekpl 168 18312 0 18274 3 0 3 3 0 8 1 vmmpepl 168 361766 0 359976 123 25 98 103 0 357 15 vmsppl 368 2857 0 2825 4 0 4 4 0 8 1 pdppl 4096 5723 0 5667 76 18 58 60 0 8 2 pvpl 32 980154 0 963715 185 32 153 170 0 265 17 pmappl 232 2857 0 2825 3 1 2 3 0 8 0 extentpl 40 57 0 39 1 0 1 1 0 8 0 phpool 112 383 0 32 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800022b80b70,138,0,ffff800022b80d34,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022b80b70,138,0,ffff800022b80d34,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044ac0,ffff800022b80e18,fffffd807090cc00) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff800022b80f18,0,ffff800000ac6fe8,0,ffffffff828c1828,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b4c800,ffff800022b811e8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800022b811e8,ffff800022b811f4,29,0,ffff800000b4c800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b4c800,fffffd807090cc00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800022b814d8,ffff800021ed2000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff800022b81330) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e9395b8,ffff800022b814d8,11,fffffd807f7b7a80) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd806cada438,ffff800022b814d8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800022ae2d00,f0,ffff800022b814d8,0,ffff800022b815c0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800022ae2d00,ffff800022b81570,ffff800022b815c0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800022b81640) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022b81640) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc8920ed9a80, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d68ff0) 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_switch(ffff800022b7b520,ffff800022b7b520) at __sanitizer_cov_trace_switch Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2aa0, count: -5