uvm_fault(0xfffffd805a85a998, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at pool_do_get+0x2c7: movq 0(%rax),%rax TID PID UID PRFLAGS PFLAGS CPU COMMAND *263376 56937 0 0 0x4000000 0 syz-executor.7 pool_do_get(ffffffff829d50d0,9,ffff80002b385cc8) at pool_do_get+0x2c7 pool_update_curpage sys/kern/subr_pool.c:1061 [inline] pool_do_get(ffffffff829d50d0,9,ffff80002b385cc8) at pool_do_get+0x2c7 sys/kern/subr_pool.c:767 pool_get(ffffffff829d50d0,9) at pool_get+0xb3 sys/kern/subr_pool.c:584 falloc(ffff8000ffff8008,ffff80002b385de0,ffff80002b385de8) at falloc+0x124 fnew sys/kern/kern_descrip.c:1051 [inline] falloc(ffff8000ffff8008,ffff80002b385de0,ffff80002b385de8) at falloc+0x124 sys/kern/kern_descrip.c:1025 dopipe(ffff8000ffff8008,20000100,4) at dopipe+0xed sys/kern/sys_pipe.c:194 syscall(ffff80002b385f20) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb2c3916f270, count: 9 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xfffffd805a85a998, 0x0, 0, 1) -> e ddb> trace pool_do_get(ffffffff829d50d0,9,ffff80002b385cc8) at pool_do_get+0x2c7 pool_update_curpage sys/kern/subr_pool.c:1061 [inline] pool_do_get(ffffffff829d50d0,9,ffff80002b385cc8) at pool_do_get+0x2c7 sys/kern/subr_pool.c:767 pool_get(ffffffff829d50d0,9) at pool_get+0xb3 sys/kern/subr_pool.c:584 falloc(ffff8000ffff8008,ffff80002b385de0,ffff80002b385de8) at falloc+0x124 fnew sys/kern/kern_descrip.c:1051 [inline] falloc(ffff8000ffff8008,ffff80002b385de0,ffff80002b385de8) at falloc+0x124 sys/kern/kern_descrip.c:1025 dopipe(ffff8000ffff8008,20000100,4) at dopipe+0xed sys/kern/sys_pipe.c:194 syscall(ffff80002b385f20) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb2c3916f270, count: -6 ddb> show registers rdi 0x21 rsi 0xffffffff829d5118 file_pool+0x48 rbp 0xffff80002b385c70 rbx 0x21 rdx 0 rcx 0xffffffff829d5110 file_pool+0x40 rax 0 r8 0x1323 __ALIGN_SIZE+0x323 r9 0x1323 __ALIGN_SIZE+0x323 r10 0x49d90a507aa8af28 r11 0xc880a6ebad7c038f r12 0x21 r13 0xfffffd806c57c880 r14 0xffffffff829d50d0 file_pool r15 0xfffffd806c57cf90 rip 0xffffffff81e7d3c7 pool_do_get+0x2c7 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002b385bf0 ss 0x10 pool_do_get+0x2c7: movq 0(%rax),%rax ddb> show proc PROC (syz-executor.7) pid=263376 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff9ce8,0xffff8000ffff8a98 process=0xffff800027d8ebe8 user=0xffff80002b380000, vmspace=0xfffffd805a85a998 estcpu=33, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 33581 264247 87042 0 2 0 syz-executor.1 33581 420202 87042 0 2 0x4000000 syz-executor.1 33581 225860 87042 0 2 0x4000000 syz-executor.1 11228 257708 29346 0 2 0 syz-executor.5 11228 479843 29346 0 2 0x4000000 syz-executor.5 82475 175028 76201 0 2 0x4081000 syz-executor.4 82475 199442 76201 0 2 0x4081000 syz-executor.4 82475 130278 76201 0 3 0x4003000 suspend syz-executor.4 47205 73039 52241 0 2 0 syz-executor.6 47205 159284 52241 0 3 0x4000080 fsleep syz-executor.6 56937 221527 84519 0 2 0 syz-executor.7 *56937 263376 84519 0 7 0x4000000 syz-executor.7 2693 427030 89031 0 2 0 syz-executor.2 2693 229711 89031 0 3 0x4000080 fsleep syz-executor.2 52384 31502 22014 0 2 0 syz-executor.3 52384 271999 22014 0 3 0x4000080 fsleep syz-executor.3 89031 295178 62730 0 3 0x82 nanoslp syz-executor.2 28090 139111 62730 0 2 0x2 syz-executor.0 87042 522698 62730 0 3 0x82 nanoslp syz-executor.1 52241 293047 62730 0 3 0x82 nanoslp syz-executor.6 84519 381205 62730 0 3 0x82 nanoslp syz-executor.7 86559 382301 1 0 3 0x100083 ttyin getty 29346 228232 62730 0 3 0x82 nanoslp syz-executor.5 76201 400586 62730 0 3 0x82 nanoslp syz-executor.4 22014 498729 62730 0 3 0x82 nanoslp syz-executor.3 73676 307736 0 0 3 0x14280 nfsidl nfsio 41591 217306 0 0 3 0x14280 nfsidl nfsio 41887 976 0 0 3 0x14280 nfsidl nfsio 59007 102928 0 0 3 0x14280 nfsidl nfsio 53494 219568 0 0 3 0x14280 nfsidl nfsio 77127 202903 0 0 3 0x14280 nfsidl nfsio 71968 396071 0 0 3 0x14280 nfsidl nfsio 24036 499967 0 0 3 0x14280 nfsidl nfsio 12441 174767 0 0 3 0x14280 nfsidl nfsio 76701 309350 0 0 3 0x14280 nfsidl nfsio 85615 342768 0 0 3 0x14280 nfsidl nfsio 19139 33437 0 0 3 0x14280 nfsidl nfsio 84175 202520 0 0 3 0x14280 nfsidl nfsio 19008 408666 0 0 3 0x14280 nfsidl nfsio 28282 159114 0 0 3 0x14280 nfsidl nfsio 12417 336993 0 0 3 0x14280 nfsidl nfsio 55328 218885 0 0 3 0x14280 nfsidl nfsio 91044 125455 0 0 3 0x14280 nfsidl nfsio 70872 508684 0 0 3 0x14280 nfsidl nfsio 56949 202670 0 0 3 0x14280 nfsidl nfsio 39800 190601 0 0 3 0x14200 bored sosplice 62730 470188 67302 0 3 0x82 kqread syz-fuzzer 62730 37619 67302 0 3 0x4000082 thrsleep syz-fuzzer 62730 6986 67302 0 3 0x4000082 thrsleep syz-fuzzer 62730 401797 67302 0 3 0x4000082 thrsleep syz-fuzzer 62730 419271 67302 0 3 0x4000082 thrsleep syz-fuzzer 62730 29176 67302 0 3 0x4000082 thrsleep syz-fuzzer 62730 131775 67302 0 3 0x4000082 thrsleep syz-fuzzer 62730 435346 67302 0 3 0x4000082 thrsleep syz-fuzzer 67302 15569 6750 0 3 0x10008a sigsusp ksh 6750 320117 55560 0 3 0x9a kqread sshd 55560 372018 1 0 3 0x88 kqread sshd 64268 404084 59991 73 3 0x1100090 kqread syslogd 59991 303732 1 0 3 0x100082 netio syslogd 71943 154110 1 0 3 0x100080 kqread resolvd 13903 215673 30396 77 3 0x100092 kqread dhcpleased 52846 82075 30396 77 3 0x100092 kqread dhcpleased 30396 496291 1 0 3 0x80 kqread dhcpleased 21940 218073 0 0 3 0x14200 bored smr 68576 68096 0 0 2 0x14200 zerothread 42283 93049 0 0 3 0x14200 aiodoned aiodoned 79047 174238 0 0 3 0x14200 syncer update 39452 285614 0 0 3 0x14200 cleaner cleaner 62383 351435 0 0 3 0x14200 reaper reaper 86556 389578 0 0 3 0x14200 pgdaemon pagedaemon 17141 138658 0 0 3 0x14200 bored viomb 6333 302153 0 0 3 0x40014200 acpi0 acpi0 26944 332206 0 0 3 0x14200 bored softnet 30487 378676 0 0 3 0x14200 bored systqmp 15630 212298 0 0 3 0x14200 bored systq 70078 80057 0 0 3 0x40014200 bored softclock 48535 519075 0 0 3 0x40014200 idle0 1 113789 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10262 6966K 7729K 78643K 125174 0 pcb 13 18K 20K 78643K 3431 0 rtable 161 13K 22K 78643K 13292 0 ifaddr 99 27K 32K 78643K 5331 0 sysctl 3 1K 1K 78643K 3 0 counters 27 17K 17K 78643K 407 0 ioctlops 0 0K 4K 78643K 8195 0 iov 0 0K 36K 78643K 3906 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1648 103K 103K 78643K 35540 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 265 0 VM map 2 0K 0K 78643K 2 0 sem 23 10K 20K 78643K 114 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 73K 78643K 29095 0 sigio 0 0K 0K 78643K 569 0 proc 65 55K 79K 78643K 5528 0 subproc 104 6K 6K 78643K 1871 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1670 0 in_multi 57 3K 7K 78643K 2719 0 ether_multi 1 0K 0K 78643K 386 0 mrt 1 0K 0K 78643K 81 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 2K 78643K 8250 0 pfkey data 0 0K 1K 78643K 146 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 828 2339K 2829K 78643K 350891 0 UVM aobj 131 8K 8K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1294 0 NDP 13 0K 1K 78643K 744 0 temp 206 4845K 5061K 78643K 494268 0 kqueue 12 18K 28K 78643K 1651 0 SYN cache 2 8K 16K 78643K 3 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 2259 0 2256 25 24 1 5 0 8 0 rtentry 112 2084 0 2019 6 3 3 4 0 8 0 unpcb 136 20673 0 20660 216 215 1 9 0 8 0 syncache 296 86 0 86 19 19 0 1 0 8 0 tcpqe 32 47 0 47 9 9 0 1 0 8 0 tcpcb 736 11768 0 11755 387 379 8 20 0 8 6 arp 88 322 0 310 1 0 1 1 0 8 0 ipq 40 102 0 100 11 10 1 1 0 8 0 ipqe 40 3213 0 3211 11 10 1 1 0 8 0 inpcb 304 28923 0 28916 435 426 9 16 0 8 8 rttmr 72 25 0 25 4 4 0 1 0 8 0 ip6q 72 16 0 16 7 7 0 1 0 8 0 ip6af 40 23 0 23 5 5 0 1 0 8 0 nd6 48 533 0 517 1 0 1 1 0 8 0 pkpcb 40 188 0 188 22 22 0 1 0 8 0 kcovpl 48 139 0 131 1 0 1 1 0 8 0 ppxss 1152 98 0 98 26 25 1 1 0 8 1 pfstscr 40 307 0 304 1 0 1 1 0 8 0 pfosfp 40 118 0 109 1 0 1 1 0 8 0 pfosfpen 112 118 0 87 1 0 1 1 0 8 0 pfrktable 1344 3101 0 3101 18 18 0 2 0 8 0 pftag 88 23 0 7 1 0 1 1 0 8 0 pfqueue 264 15 0 15 4 4 0 1 0 8 0 pfstitem 24 481 0 464 1 0 1 1 0 8 0 pfstkey 112 581 0 578 1 0 1 1 0 8 0 pfstate 320 327 0 318 1 0 1 1 0 8 0 pfrule 1360 2071 0 2065 20 19 1 6 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 8744 0 8484 69 48 21 32 0 8 0 art_table 32 8746 0 8485 5 1 4 5 0 8 0 art_node 16 2079 0 2024 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 6 2 2 0 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 94 0 73 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 39528 0 37945 100 0 100 100 0 8 0 ffsino 240 39528 0 37945 94 0 94 94 0 8 0 nchpl 144 78404 0 76773 62 0 62 62 0 8 0 uvmvnodes 80 8655 0 0 177 0 177 177 0 8 0 vnodes 224 8655 0 0 510 0 510 510 0 8 0 namei 1024 317531 0 317531 12 11 1 2 0 8 1 vcpupl 1984 261 0 1 33 0 33 33 0 8 0 vmpool 528 391 0 131 21 3 18 18 0 8 0 pfiaddrpl 120 979 0 979 6 6 0 1 0 8 0 scsiplug 72 33 0 33 9 9 0 1 0 8 0 scxspl 216 234087 0 234087 63 62 1 8 0 8 1 plimitpl 152 3790 0 3776 1 0 1 1 0 8 0 sigapl 424 29176 0 29114 12 4 8 8 0 8 0 futexpl 64 302251 0 302248 5 4 1 1 0 8 0 knotepl 120 259852 0 259772 50 47 3 10 0 8 0 kqueuepl 184 6901 0 6892 100 99 1 6 0 8 0 pipepl 304 7286 0 7227 168 163 5 12 0 8 0 fdescpl 432 29103 0 29075 4 0 4 4 0 8 0 filepl 120 229166 0 228870 327 313 14 20 0 8 5 filepl: pool(0xffffffff829d50d0:filepl): page inconsistency: page 0x0; at page head addr 0xfffffd8078778f90 (p 0xfffffd8078778000) lockfpl 104 7257 0 7255 12 11 1 2 0 8 0 lockfspl 48 1940 0 1938 1 0 1 1 0 8 0 sessionpl 144 169 0 153 1 0 1 1 0 8 0 pgrppl 48 518 0 502 1 0 1 1 0 8 0 ucredpl 96 24710 0 24694 1 0 1 1 0 8 0 zombiepl 144 29115 0 29114 6 5 1 1 0 8 0 processpl 1000 29176 0 29114 13 5 8 9 0 8 0 procpl 672 73441 0 73362 63 56 7 9 0 8 0 sosppl 168 188 0 188 34 34 0 1 0 8 0 sockpl 448 52116 0 52093 1067 1056 11 31 0 8 8 mcl64k 65536 1156 0 1156 62 61 1 1 0 8 1 mcl16k 16384 239 0 239 52 52 0 1 0 8 0 mcl12k 12288 917 0 917 58 58 0 1 0 8 0 mcl9k 9216 510 0 510 64 63 1 1 0 8 1 mcl8k 8192 1858 0 1858 52 51 1 1 0 8 1 mcl4k 4096 3471 0 3471 26 25 1 1 0 8 1 mcl2k2 2112 219 0 219 73 72 1 1 0 8 1 mcl2k 2048 139815 0 139753 105 95 10 22 0 8 1 mtagpl 96 6333 0 6094 47 41 6 13 0 8 0 mbufpl 256 435618 0 435181 1148 1117 31 434 0 8 1 bufpl 288 57502 0 48840 619 0 619 619 0 8 0 anonpl 24 8147546 0 8124199 551 392 159 199 0 188 0 amapchunkpl 152 944454 0 943533 2107 2068 39 662 0 158 1 amappl16 200 86629 0 85670 393 334 59 64 0 8 4 amappl15 192 7069 0 7062 1 0 1 1 0 8 0 amappl14 184 4577 0 4568 1 0 1 1 0 8 0 amappl13 176 3607 0 3605 1 0 1 1 0 8 0 amappl12 168 2271 0 2261 1 0 1 1 0 8 0 amappl11 160 5547 0 5533 1 0 1 1 0 8 0 amappl10 152 2824 0 2817 1 0 1 1 0 8 0 amappl9 144 2714 0 2711 1 0 1 1 0 8 0 amappl8 136 6461 0 6304 8 2 6 6 0 8 0 amappl7 128 3552 0 3538 1 0 1 1 0 8 0 amappl6 120 3009 0 2984 2 1 1 2 0 8 0 amappl5 112 25891 0 25877 1 0 1 1 0 8 0 amappl4 104 13527 0 13484 3 1 2 2 0 8 0 amappl3 96 5810 0 5796 1 0 1 1 0 8 0 amappl2 88 6404 0 6335 3 1 2 3 0 8 0 amappl1 80 519546 0 518965 18 5 13 18 0 8 0 amappl 88 347546 0 347120 12 2 10 10 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 29494 0 29206 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 29494 0 29206 2 0 2 2 0 8 0 vmmpekpl 168 205501 0 205409 6 1 5 5 0 8 0 vmmpepl 168 2678113 0 2674654 631 463 168 183 0 357 0 vmsppl 272 29493 0 29206 23 3 20 20 0 8 0 rwobjpl 24 632296 0 621309 88 20 68 68 0 8 0 pdppl 4096 58994 0 58672 1824 1501 323 324 0 8 1 pvpl 32 13643384 0 13618920 869 652 217 329 0 265 0 pmappl 216 29493 0 29206 18 1 17 17 0 8 1 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 5668 0 4421 57 20 37 43 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pool_do_get(ffffffff829d50d0,9,ffff80002b385cc8) at pool_do_get+0x2c7 pool_update_curpage sys/kern/subr_pool.c:1061 [inline] pool_do_get(ffffffff829d50d0,9,ffff80002b385cc8) at pool_do_get+0x2c7 sys/kern/subr_pool.c:767 pool_get(ffffffff829d50d0,9) at pool_get+0xb3 sys/kern/subr_pool.c:584 falloc(ffff8000ffff8008,ffff80002b385de0,ffff80002b385de8) at falloc+0x124 fnew sys/kern/kern_descrip.c:1051 [inline] falloc(ffff8000ffff8008,ffff80002b385de0,ffff80002b385de8) at falloc+0x124 sys/kern/kern_descrip.c:1025 dopipe(ffff8000ffff8008,20000100,4) at dopipe+0xed sys/kern/sys_pipe.c:194 syscall(ffff80002b385f20) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb2c3916f270, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace pool_do_get(ffffffff829d50d0,9,ffff80002b385cc8) at pool_do_get+0x2c7 pool_update_curpage sys/kern/subr_pool.c:1061 [inline] pool_do_get(ffffffff829d50d0,9,ffff80002b385cc8) at pool_do_get+0x2c7 sys/kern/subr_pool.c:767 pool_get(ffffffff829d50d0,9) at pool_get+0xb3 sys/kern/subr_pool.c:584 falloc(ffff8000ffff8008,ffff80002b385de0,ffff80002b385de8) at falloc+0x124 fnew sys/kern/kern_descrip.c:1051 [inline] falloc(ffff8000ffff8008,ffff80002b385de0,ffff80002b385de8) at falloc+0x124 sys/kern/kern_descrip.c:1025 dopipe(ffff8000ffff8008,20000100,4) at dopipe+0xed sys/kern/sys_pipe.c:194 syscall(ffff80002b385f20) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb2c3916f270, count: -6