ÔƉÖÊá V‰Lî븳¢ê…ⲟ_šøÌ×{CŠç_Á]ú¾aÏn]z1ÝŠÄ~0 ‹û¸ÃÕ@>¿¬Ÿrf>›ù;¡xý9Y•çPPˆMLÔƉÖÊá V‰Lî븳¢ê…ⲟ_šøÌ×{CŠç_Á]ú¾aÏn]z1ÝŠÄ~0 ‹û¸ÃÕ@>¿¬Ÿrf>›ù;¡xý9Y•çPPˆMLpanic: attempt to execute user address 0x0 in supervisor mode Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 32599 48485 0 0 0x4000000 1K syz-executor.1 212054 68526 0 0 0 0 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 pageflttrap() at pageflttrap+0x40b kerntrap(ffff800023b7a8c0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800023bba000,fffffd80639f19a8,10,ffff80000005b8a0,ffff800023b7ab28) at alltraps_kern_meltdown+0x7b 0(b,ffff800023b7aa88,83,ffff800023b7ab28,0,b) at 0 rt_clone(ffff800023b7ab98,fffffd8071312088,0) at rt_clone+0x78 sys/net/route.c:266 rtalloc_mpath(fffffd8071312088,fffffd8063e31bf4,0) at rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline] rtalloc_mpath(fffffd8071312088,fffffd8063e31bf4,0) at rtalloc_mpath+0xba sys/net/route.c:359 ip_output(fffffd8063e31b00,0,fffffd8071312078,20,0,fffffd8071312008) at ip_output+0x4f2 sys/netinet/ip_output.c:204 rip_output(fffffd807a097d00,fffffd8061e197c0,ffff800023b7ada8,ffff800023bba000) at rip_output+0x252 sys/netinet/raw_ip.c:289 rip_usrreq(fffffd8061e197c0,9,fffffd807a097d00,0,0,ffff800020acf168) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538 sosend(fffffd8061e197c0,0,ffff800023b7afc8,0,0,80) at sosend+0x645 sys/kern/uipc_socket.c:524 dofilewritev(ffff800020acf168,3,ffff800023b7afc8,0,ffff800023b7b0b0) at dofilewritev+0x1b7 sys/kern/sys_generic.c:364 sys_write(ffff800020acf168,ffff800023b7b068,ffff800023b7b0b0) at sys_write+0x83 sys/kern/sys_generic.c:284 end trace frame: 0xffff800023b7b120, count: 0 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic attempt to execute user address 0x0 in supervisor mode ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 pageflttrap() at pageflttrap+0x40b kerntrap(ffff800023b7a8c0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800023bba000,fffffd80639f19a8,10,ffff80000005b8a0,ffff800023b7ab28) at alltraps_kern_meltdown+0x7b 0(b,ffff800023b7aa88,83,ffff800023b7ab28,0,b) at 0 rt_clone(ffff800023b7ab98,fffffd8071312088,0) at rt_clone+0x78 sys/net/route.c:266 rtalloc_mpath(fffffd8071312088,fffffd8063e31bf4,0) at rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline] rtalloc_mpath(fffffd8071312088,fffffd8063e31bf4,0) at rtalloc_mpath+0xba sys/net/route.c:359 ip_output(fffffd8063e31b00,0,fffffd8071312078,20,0,fffffd8071312008) at ip_output+0x4f2 sys/netinet/ip_output.c:204 rip_output(fffffd807a097d00,fffffd8061e197c0,ffff800023b7ada8,ffff800023bba000) at rip_output+0x252 sys/netinet/raw_ip.c:289 rip_usrreq(fffffd8061e197c0,9,fffffd807a097d00,0,0,ffff800020acf168) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538 sosend(fffffd8061e197c0,0,ffff800023b7afc8,0,0,80) at sosend+0x645 sys/kern/uipc_socket.c:524 dofilewritev(ffff800020acf168,3,ffff800023b7afc8,0,ffff800023b7b0b0) at dofilewritev+0x1b7 sys/kern/sys_generic.c:364 sys_write(ffff800020acf168,ffff800023b7b068,ffff800023b7b0b0) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff800023b7b130) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800023b7b130) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,c,0,3,984e0b00010) at Xsyscall+0x128 end of kernel end trace frame: 0x987735879f0, count: -16 ddb{1}> show registers rdi 0xffffffff81a8d2c7 db_enter+0x17 rsi 0x1c11 __ALIGN_SIZE+0xc11 rbp 0xffff800023b7a730 rbx 0xffff800023b7a7e0 rdx 0x1c12 __ALIGN_SIZE+0xc12 rcx 0xffff800023bba000 rax 0xffff800023bba000 r8 0xffffffff818b4cbf kprintf+0x16f r9 0x1 r10 0x25 r11 0xe4723e28b6a304f5 r12 0x3000000008 r13 0xffff800023b7a740 r14 0x100 r15 0x1 rip 0xffffffff81a8d2c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800023b7a720 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=32599 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020aceef0,0xffffffff82666280 process=0xffff800020a8b890 user=0xffff800023b76000, vmspace=0xfffffd807f00bb80 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 48485 428317 18099 0 2 0 syz-executor.1 *48485 32599 18099 0 7 0x4000000 syz-executor.1 68526 212054 16347 0 7 0 syz-executor.0 68526 450198 16347 0 3 0x4000080 netio syz-executor.0 68526 190420 16347 0 3 0x4000080 fsleep syz-executor.0 18099 119742 64140 0 3 0x82 nanosleep syz-executor.1 16347 122650 64140 0 3 0x82 nanosleep syz-executor.0 73194 126313 0 0 3 0x14200 acct acct 86558 277330 0 0 3 0x14200 bored sosplice 64140 126406 50136 0 3 0x82 thrsleep syz-fuzzer 64140 115491 50136 0 3 0x4000082 nanosleep syz-fuzzer 64140 411950 50136 0 3 0x4000082 thrsleep syz-fuzzer 64140 181306 50136 0 3 0x4000082 kqread syz-fuzzer 64140 354526 50136 0 3 0x4000082 thrsleep syz-fuzzer 64140 494369 50136 0 3 0x4000082 thrsleep syz-fuzzer 64140 501004 50136 0 3 0x4000082 thrsleep syz-fuzzer 64140 97694 50136 0 3 0x4000082 thrsleep syz-fuzzer 64140 490624 50136 0 3 0x4000082 thrsleep syz-fuzzer 64140 417401 50136 0 3 0x4000082 thrsleep syz-fuzzer 64140 446037 50136 0 3 0x4000082 thrsleep syz-fuzzer 50136 494086 40530 0 3 0x10008a pause ksh 40530 516788 55242 0 3 0x92 select sshd 86789 232957 1 0 3 0x100083 ttyin getty 55242 293737 1 0 3 0x80 select sshd 7435 180470 51544 74 3 0x100092 bpf pflogd 51544 325313 1 0 3 0x80 netio pflogd 40365 185896 80025 73 3 0x100090 kqread syslogd 80025 497771 1 0 3 0x100082 netio syslogd 91791 324957 1 77 3 0x100090 poll dhclient 94851 479910 1 0 3 0x80 poll dhclient 71877 165131 0 0 2 0x14200 zerothread 78786 510352 0 0 3 0x14200 aiodoned aiodoned 96050 165493 0 0 3 0x14200 syncer update 41547 10645 0 0 3 0x14200 cleaner cleaner 15170 228314 0 0 3 0x14200 reaper reaper 99612 57595 0 0 3 0x14200 pgdaemon pagedaemon 30293 285046 0 0 3 0x14200 bored crynlk 21684 260086 0 0 3 0x14200 bored crypto 95696 9004 0 0 3 0x40014200 acpi0 acpi0 72042 314314 0 0 3 0x40014200 idle1 50567 284512 0 0 3 0x14200 bored softnet 9191 328628 0 0 3 0x14200 bored systqmp 71012 468272 0 0 3 0x14200 bored systq 24387 180541 0 0 3 0x40014200 bored softclock 41734 470654 0 0 3 0x40014200 idle0 71754 165138 0 0 3 0x14200 bored smr 1 200162 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 48485 (syz-executor.1) thread 0xffff800020acf168 (32599) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82644940) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rt_clone+0x5c sys/net/route.c:266 #2 rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline] #2 rtalloc_mpath+0xba sys/net/route.c:359 #3 ip_output+0x4f2 sys/netinet/ip_output.c:204 #4 rip_output+0x252 sys/netinet/raw_ip.c:289 #5 rip_usrreq+0x46a sys/netinet/raw_ip.c:538 #6 sosend+0x645 sys/kern/uipc_socket.c:524 #7 dofilewritev+0x1b7 sys/kern/sys_generic.c:364 #8 sys_write+0x83 sys/kern/sys_generic.c:284 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #10 Xsyscall+0x128 exclusive rwlock netlock r = 0 (0xffffffff824d26b8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sosend+0x51b sys/kern/uipc_socket.c:512 #3 dofilewritev+0x1b7 sys/kern/sys_generic.c:364 #4 sys_write+0x83 sys/kern/sys_generic.c:284 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9580 6563K 7268K 78643K 12702 0 0 pcb 13 8K 8K 78643K 137 0 0 rtable 136 14K 14K 78643K 703 0 0 ifaddr 84 17K 17K 78643K 212 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1503 0 0 iov 0 0K 16K 78643K 157 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1220 77K 77K 78643K 1955 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 9 0 0 VM map 12 6K 6K 78643K 13 0 0 sem 12 0K 0K 78643K 479 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 871 0 0 sigio 0 0K 0K 78643K 491 0 0 proc 60 63K 95K 78643K 683 0 0 subproc 32 2K 2K 78643K 102 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 47 0 0 in_multi 36 2K 2K 78643K 106 0 0 ether_multi 1 0K 0K 78643K 7 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 66 291K 291K 78643K 66 0 0 exec 0 0K 1K 78643K 382 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 135 104K 104K 78643K 4208 0 0 UVM aobj 62 5K 5K 78643K 64 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 2 0K 0K 78643K 145 0 0 NDP 19 0K 0K 78643K 63 0 0 temp 221 3560K 3632K 78643K 23161 0 0 kqueue 0 0K 0K 78643K 12 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 27 0 20 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 85 0 83 1 0 1 1 0 8 0 rtentry 112 126 0 74 2 0 2 2 0 8 0 unpcb 120 2844 0 2830 7 6 1 3 0 8 0 syncache 264 16 0 16 5 5 0 1 0 8 0 tcpqe 32 61 0 61 5 5 0 1 0 8 0 tcpcb 544 335 0 329 2 1 1 2 0 8 0 inpcb 280 1618 0 1606 5 3 2 4 0 8 0 nd6 48 13 0 9 1 0 1 1 0 8 0 pkpcb 40 7 0 7 1 1 0 1 0 8 0 ppxss 1128 20 0 20 7 7 0 1 0 8 0 pffrag 232 18 0 9 2 1 1 1 0 482 0 pffrnode 88 13 0 9 2 1 1 1 0 8 0 pffrent 40 258 0 231 2 1 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 pfstitem 24 136 0 106 1 0 1 1 0 8 0 pfstkey 112 136 0 106 2 0 2 2 0 8 0 pfstate 328 136 0 106 5 0 5 5 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 4 0 2 3 1 2 2 0 8 0 art_heap4 256 528 0 279 17 1 16 17 0 8 0 art_table 32 532 0 281 3 0 3 3 0 8 0 art_node 16 125 0 77 1 0 1 1 0 8 0 sysvmsgpl 40 39 0 26 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 477 0 467 1 0 1 1 0 8 0 shmpl 112 62 0 2 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2838 0 1437 46 0 46 46 0 8 0 ffsino 272 2838 0 1437 94 0 94 94 0 8 0 nchpl 144 4556 0 4094 61 41 20 61 0 8 0 uvmvnodes 72 3431 0 0 63 0 63 63 0 8 0 vnodes 208 3431 0 0 181 0 181 181 0 8 0 namei 1024 14289 0 14289 5 4 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 10 0 0 2 0 2 2 0 8 0 vmpool 552 11 0 1 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 13544 0 13544 14 13 1 7 0 8 1 plimitpl 152 86 0 78 1 0 1 1 0 8 0 sigapl 432 1057 0 1041 3 1 2 3 0 8 0 futexpl 56 25010 0 25009 1 0 1 1 0 8 0 knotepl 112 216 0 197 2 1 1 2 0 8 0 kqueuepl 104 184 0 182 1 0 1 1 0 8 0 pipepl 112 1652 0 1633 4 3 1 2 0 8 0 fdescpl 488 1058 0 1041 3 0 3 3 0 8 0 filepl 152 11960 0 11855 18 12 6 9 0 8 1 lockfpl 104 341 0 340 1 0 1 1 0 8 0 lockfspl 48 117 0 116 1 0 1 1 0 8 0 sessionpl 112 22 0 11 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 1139 0 1130 1 0 1 1 0 8 0 zombiepl 144 1041 0 1041 4 3 1 1 0 8 1 processpl 896 1075 0 1041 4 0 4 4 0 8 0 procpl 632 3208 0 3161 5 0 5 5 0 8 0 srpgc 64 4 0 4 1 1 0 1 0 8 0 sosppl 128 40 0 40 4 3 1 1 0 8 1 sockpl 384 4577 0 4551 25 20 5 12 0 8 1 mcl64k 65536 559 0 0 67 4 63 65 0 8 1 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 15 0 0 2 0 2 2 0 8 0 mcl4k 4096 16 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 165 0 0 20 0 20 20 0 8 0 mtagpl 80 46 0 0 1 0 1 1 0 8 0 mbufpl 256 1005 0 0 59 0 59 59 0 8 0 bufpl 256 8984 0 1926 442 0 442 442 0 8 0 anonpl 16 152589 0 132231 126 42 84 99 0 124 0 amapchunkpl 152 7456 0 7291 22 14 8 14 0 158 0 amappl16 192 6949 0 5823 105 41 64 69 0 8 6 amappl14 176 70 0 66 1 0 1 1 0 8 0 amappl13 168 244 0 241 1 0 1 1 0 8 0 amappl12 160 167 0 165 1 0 1 1 0 8 0 amappl11 152 366 0 351 1 0 1 1 0 8 0 amappl10 144 12 0 7 1 0 1 1 0 8 0 amappl9 136 660 0 656 1 0 1 1 0 8 0 amappl8 128 227 0 193 2 0 2 2 0 8 0 amappl7 120 59 0 52 1 0 1 1 0 8 0 amappl6 112 369 0 353 1 0 1 1 0 8 0 amappl5 104 338 0 322 1 0 1 1 0 8 0 amappl4 96 1243 0 1211 1 0 1 1 0 8 0 amappl3 88 307 0 302 1 0 1 1 0 8 0 amappl2 80 7558 0 7478 3 1 2 3 0 8 0 amappl1 72 33757 0 33287 27 17 10 21 0 8 0 amappl 80 3544 0 3487 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 63 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1069 0 1041 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1069 0 1041 1 0 1 1 0 8 0 vmmpekpl 168 15129 0 15093 2 0 2 2 0 8 0 vmmpepl 168 142474 0 140054 216 83 133 143 0 357 25 vmsppl 368 1057 0 1041 2 0 2 2 0 8 0 pdppl 4096 2145 0 2094 7 0 7 7 0 8 0 pvpl 32 401022 0 377813 271 56 215 230 0 265 23 pmappl 232 1068 0 1042 4 2 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 730 0 14 21 0 21 21 0 8 0