login: uvm_fault(0xfffffd807a6172f8, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at socreate+0x84: cmpq $0,0(%rax) TID PID UID PRFLAGS PFLAGS CPU COMMAND * 15036 90172 32767 0x10 0x4000000 0K syz-executor.3 110643 24755 0 0x14000 0x200 1 reaper socreate(18,ffff80002c934d08,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socket(ffff8000211fed30,ffff80002c934d98,ffff80002c934df0) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff80002c934e60) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002c934e60) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ce3cae7e50, count: 11 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd807a6172f8, 0x0, 0, 1) -> e ddb{0}> trace socreate(18,ffff80002c934d08,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socket(ffff8000211fed30,ffff80002c934d98,ffff80002c934df0) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff80002c934e60) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002c934e60) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ce3cae7e50, count: -4 ddb{0}> show registers rdi 0xffff8000260eb000 rsi 0x1003 __ALIGN_SIZE+0x3 rbp 0xffff80002c934cf0 rbx 0x18 rdx 0xffff8000260eb000 rcx 0x1002 __ALIGN_SIZE+0x2 rax 0 r8 0xffffffff81e690f0 uvm_map_inentry_pc r9 0x15 r10 0 r11 0xde6e39f40f6d3ef3 r12 0xffff80002c934d08 r13 0xffffffff8288cca0 inet6sw r14 0 r15 0x29 rip 0xffffffff81e82144 socreate+0x84 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff80002c934c90 ss 0x10 socreate+0x84: cmpq $0,0(%rax) ddb{0}> show proc PROC (syz-executor.3) pid=15036 stat=onproc flags process=10 proc=4000000 pri=83, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000211ff270,0xffff8000211ff520 process=0xffff8000fffef200 user=0xffff80002c92f000, vmspace=0xfffffd807a6172f8 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 90172 360584 45557 32767 2 0x10 syz-executor.3 *90172 15036 45557 32767 7 0x4000010 syz-executor.3 45353 406210 89683 32767 2 0x10 syz-executor.4 45353 425173 89683 32767 3 0x4000090 fsleep syz-executor.4 45514 239063 17251 32767 2 0x10 syz-executor.7 45514 302903 17251 32767 2 0x4000010 syz-executor.7 4513 336672 21880 32767 2 0x10 syz-executor.1 4513 257266 21880 32767 3 0x4000090 fsleep syz-executor.1 17251 467337 85349 32767 3 0x90 nanoslp syz-executor.7 85349 136365 54838 0 3 0x82 wait syz-executor.7 89683 57504 57111 32767 3 0x90 nanoslp syz-executor.4 12440 239470 15230 32767 2 0x10 syz-executor.5 46276 366219 95988 32767 2 0x10 syz-executor.6 45557 205543 67897 32767 3 0x90 nanoslp syz-executor.3 15230 93644 54838 0 3 0x82 wait syz-executor.5 57111 515873 54838 0 3 0x82 wait syz-executor.4 95988 331622 54838 0 3 0x82 wait syz-executor.6 67897 110651 54838 0 3 0x82 wait syz-executor.3 21880 415141 34191 32767 3 0x90 nanoslp syz-executor.1 25490 126448 91472 32767 2 0x10 syz-executor.2 91472 149842 54838 0 3 0x82 wait syz-executor.2 34191 438871 54838 0 3 0x82 wait syz-executor.1 91693 266201 23267 32767 3 0x90 nanoslp syz-executor.0 23267 162179 54838 0 3 0x82 wait syz-executor.0 54838 123343 20973 0 3 0x82 thrsleep syz-fuzzer 54838 122191 20973 0 3 0x4000082 nanoslp syz-fuzzer 54838 128021 20973 0 3 0x4000082 thrsleep syz-fuzzer 54838 355588 20973 0 3 0x4000082 thrsleep syz-fuzzer 54838 451243 20973 0 3 0x4000082 thrsleep syz-fuzzer 54838 243158 20973 0 3 0x4000082 thrsleep syz-fuzzer 54838 362571 20973 0 3 0x4000082 thrsleep syz-fuzzer 54838 1911 20973 0 3 0x4000082 kqread syz-fuzzer 54838 10649 20973 0 3 0x4000082 thrsleep syz-fuzzer 20973 365347 10487 0 3 0x10008a sigsusp ksh 10487 166908 93161 0 3 0x9a kqread sshd 46941 15893 1 0 3 0x100083 ttyin getty 93161 181155 1 0 3 0x88 kqread sshd 21167 151909 55745 73 3 0x1100090 kqread syslogd 55745 104265 1 0 3 0x100082 netio syslogd 90845 463944 1 0 3 0x100080 kqread resolvd 34692 346882 56838 77 3 0x100092 kqread dhcpleased 58388 121957 56838 77 3 0x100092 kqread dhcpleased 56838 314464 1 0 3 0x80 kqread dhcpleased 9738 67068 0 0 3 0x14200 bored smr 14717 289981 0 0 2 0x14200 zerothread 36647 89604 0 0 3 0x14200 aiodoned aiodoned 27094 134413 0 0 3 0x14200 syncer update 67322 75315 0 0 3 0x14200 cleaner cleaner 24755 110643 0 0 7 0x14200 reaper 33141 423049 0 0 3 0x14200 pgdaemon pagedaemon 23597 491600 0 0 3 0x14200 bored viomb 61 163453 0 0 3 0x40014200 acpi0 acpi0 3763 5 0 0 3 0x40014200 idle1 87698 320414 0 0 3 0x14200 bored softnet 34683 113459 0 0 3 0x14200 bored systqmp 24271 173280 0 0 3 0x14200 bored systq 77946 72346 0 0 3 0x40014200 bored softclock 4062 106585 0 0 3 0x40014200 idle0 1 482836 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 90172 (syz-executor.3) thread 0xffff8000211fed30 (15036) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82abcc60) #0 witness_lock+0x44d #1 kpageflttrap+0x23d sys/arch/amd64/amd64/trap.c:274 #2 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 #3 alltraps_kern_meltdown+0x7b #4 socreate+0x84 sys/kern/uipc_socket.c:172 #5 sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 #6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10167 6406K 6419K 78643K 11257 0 pcb 13 8K 8K 78643K 13 0 rtable 238 6K 7K 78643K 348 0 ifaddr 81 16K 16K 78643K 82 0 counters 56 35K 35K 78643K 56 0 ioctlops 0 0K 2K 78643K 1773 0 iov 0 0K 4K 78643K 1312 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1270 79K 79K 78643K 1283 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 13K 78643K 208 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 209 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 125K 78643K 15730 0 sigio 0 0K 0K 78643K 206 0 proc 56 74K 99K 78643K 601 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 99 6K 6K 78643K 99 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 25 122K 122K 78643K 25 0 exec 0 0K 2K 78643K 601 0 tdb 3 0K 0K 78643K 3 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 281 80K 81K 78643K 187576 0 UVM aobj 131 4K 4K 78643K 142 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 11 0K 2K 78643K 27 0 temp 124 4699K 4763K 78643K 37149 0 kqueue 12 18K 18K 78643K 22 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 plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 33 0 30 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 136 9564 0 9547 15 10 5 5 0 8 4 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpcb 736 60 0 50 3 2 1 3 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 304 109 0 102 1 0 1 1 0 8 0 nd6 48 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 0 29 0 29 29 0 8 0 art_table 32 454 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 semapl 112 207 0 197 1 0 1 1 0 8 0 shmpl 112 139 0 11 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 17389 0 15961 90 0 90 90 0 8 0 ffsino 272 17389 0 15961 96 0 96 96 0 8 0 nchpl 144 38739 0 37079 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 82583 0 82583 2 1 1 2 0 8 1 percpumem 16 40 0 0 1 0 1 1 0 8 0 scxspl 216 100170 0 100170 9 8 1 8 0 8 1 plimitpl 152 30 0 8 1 0 1 1 0 8 0 sigapl 424 16002 0 15954 7 0 7 7 0 8 0 futexpl 64 85932 0 85930 1 0 1 1 0 8 0 knotepl 120 106 0 0 4 0 4 4 0 8 0 kqueuepl 216 285 0 277 5 2 3 3 0 8 2 pipepl 336 9329 0 9299 36 28 8 14 0 8 5 fdescpl 496 15988 0 15955 7 1 6 6 0 8 0 filepl 152 54619 0 54376 44 27 17 20 0 8 7 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 1090 0 1074 1 0 1 1 0 8 0 ucredpl 96 79 0 61 1 0 1 1 0 8 0 zombiepl 144 15955 0 15954 1 0 1 1 0 8 0 processpl 1064 16002 0 15954 5 1 4 4 0 8 0 procpl 672 34298 0 34238 15 8 7 7 0 8 1 sockpl 480 9979 0 9952 72 61 11 20 0 8 7 mcl64k 65536 26 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 26 0 0 4 1 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 13 0 0 1 0 1 1 0 8 0 mcl2k 2048 97 0 0 10 0 10 10 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 450 0 0 21 0 21 21 0 8 0 bufpl 288 19183 0 12848 453 0 453 453 0 8 0 anonpl 24 3963876 0 3955989 59 4 55 55 0 186 0 amapchunkpl 152 443241 0 442647 36 8 28 29 0 158 2 amappl16 200 29549 0 29393 10 1 9 9 0 8 0 amappl15 192 2009 0 2003 1 0 1 1 0 8 0 amappl14 184 3940 0 3933 1 0 1 1 0 8 0 amappl13 176 80 0 78 1 0 1 1 0 8 0 amappl12 168 2005 0 2002 1 0 1 1 0 8 0 amappl11 160 1938 0 1925 1 0 1 1 0 8 0 amappl10 152 1987 0 1981 1 0 1 1 0 8 0 amappl9 144 2445 0 2441 1 0 1 1 0 8 0 amappl8 136 4495 0 4433 3 0 3 3 0 8 0 amappl7 128 4009 0 3994 1 0 1 1 0 8 0 amappl6 120 2166 0 2144 2 1 1 2 0 8 0 amappl5 112 14548 0 14529 1 0 1 1 0 8 0 amappl4 104 4801 0 4772 2 0 2 2 0 8 0 amappl3 96 3062 0 3048 1 0 1 1 0 8 0 amappl2 88 3126 0 3082 3 1 2 3 0 8 0 amappl1 80 265950 0 265346 19 4 15 18 0 8 0 amappl 88 187157 0 186945 6 0 6 6 0 92 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 72 141 0 11 3 0 3 3 0 8 0 uaddrrnd 24 15988 0 15955 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 15988 0 15955 1 0 1 1 0 8 0 vmmpekpl 168 117710 0 117667 3 0 3 3 0 8 0 vmmpepl 168 1378226 0 1375991 120 7 113 113 0 357 5 vmsppl 368 15987 0 15954 4 0 4 4 0 8 0 rwobjpl 56 304795 0 297689 106 4 102 102 0 8 0 pdppl 4096 31983 0 31908 123 42 81 95 0 8 6 pvpl 32 6592490 0 6579731 258 141 117 244 0 265 2 pmappl 248 15987 0 15954 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 887 0 76 24 0 24 24 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace socreate(18,ffff80002c934d08,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socket(ffff8000211fed30,ffff80002c934d98,ffff80002c934df0) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff80002c934e60) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002c934e60) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ce3cae7e50, count: -4 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 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+0x7 sys/dev/kcov.c:144 uvm_unmap_detach(ffff8000211355d0,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd807a617748) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd807a617748) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f97a0) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: 7 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 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+0x7 sys/dev/kcov.c:144 uvm_unmap_detach(ffff8000211355d0,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd807a617748) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd807a617748) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f97a0) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: -8