uvm_fault(0xfffffd807f000170, 0x18, 0, 1) -> e kernel: page fault trap, code=0 Stopped at unveil_find_cover+0xc8: movl 0x18(%r12),%ebx ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd807f000170, 0x18, 0, 1) -> e unveil_find_cover(0,ffff800023f8cc60) at unveil_find_cover+0xc8 sys/kern/kern_unveil.c:308 end trace frame: 0xffff80002403add0, count: 0 ddb{0}> trace unveil_find_cover(0,ffff800023f8cc60) at unveil_find_cover+0xc8 sys/kern/kern_unveil.c:308 unveil_add_vnode(ffff800023f8cc60,fffffd8064d9cc48) at unveil_add_vnode+0x2b5 sys/kern/kern_unveil.c:508 unveil_add(ffff800023f8cc60,ffff80002403ae98,ffff80002403af73) at unveil_add+0x27b sys/kern/kern_unveil.c:621 sys_unveil(ffff800023f8cc60,ffff80002403afd8,ffff80002403b020) at sys_unveil+0x416 sys/kern/vfs_syscalls.c:1038 syscall(ffff80002403b0a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002403b0a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c608e0fa00, count: -6 ddb{0}> show registers rdi 0xffffffff81b9617b unveil_find_cover+0x2b rsi 0x1154 __ALIGN_SIZE+0x154 rbp 0xffff80002403ad40 rbx 0 rdx 0x1155 __ALIGN_SIZE+0x155 rcx 0xffff80002136e000 rax 0xfffffd807f7bfae0 r8 0xffffffff817aafb7 witness_assert+0x207 r9 0x5 r10 0xa r11 0x128bff15db84fcc9 r12 0 r13 0xfffffd807efc4410 r14 0xffffffffffffffff r15 0xffff800023f8cc60 rip 0xffffffff81b96218 unveil_find_cover+0xc8 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80002403aca0 ss 0x10 unveil_find_cover+0xc8: movl 0x18(%r12),%ebx ddb{0}> show proc PROC (syz-executor.0) pid=492041 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800023f8d3b0,0xffffffff8267b150 process=0xffff800024010408 user=0xffff800024036000, vmspace=0xfffffd807f000170 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 34175 155360 94472 0 2 0 syz-executor.0 34175 367103 94472 0 3 0x4000080 fsleep syz-executor.0 34175 131900 94472 0 2 0x4000000 syz-executor.0 *34175 492041 94472 0 7 0x4000000 syz-executor.0 34406 75001 0 0 3 0x14200 acct acct 84942 196493 0 0 3 0x14200 bored sosplice 18157 459177 0 0 3 0x14280 nfsidl nfsio 92318 492156 0 0 3 0x14280 nfsidl nfsio 40173 40082 0 0 3 0x14280 nfsidl nfsio 67245 110328 0 0 3 0x14280 nfsidl nfsio 41682 373980 0 0 3 0x14280 nfsidl nfsio 6187 103114 0 0 3 0x14280 nfsidl nfsio 38526 403637 0 0 3 0x14280 nfsidl nfsio 4140 441066 0 0 3 0x14280 nfsidl nfsio 69420 518779 0 0 3 0x14280 nfsidl nfsio 32206 126513 0 0 3 0x14280 nfsidl nfsio 68599 224720 0 0 3 0x14280 nfsidl nfsio 23503 196328 0 0 3 0x14280 nfsidl nfsio 64406 93548 0 0 3 0x14280 nfsidl nfsio 46537 453613 0 0 3 0x14280 nfsidl nfsio 22452 450290 0 0 3 0x14280 nfsidl nfsio 65363 268157 0 0 3 0x14280 nfsidl nfsio 37731 337872 0 0 3 0x14280 nfsidl nfsio 90389 362122 0 0 3 0x14280 nfsidl nfsio 93966 496769 0 0 3 0x14280 nfsidl nfsio 36918 229402 0 0 3 0x14280 nfsidl nfsio 13638 416986 42127 0 3 0x82 piperd syz-executor.1 94472 225278 42127 0 7 0x482 syz-executor.0 42127 378742 46102 0 3 0x82 thrsleep syz-fuzzer 42127 522198 46102 0 2 0x4000482 syz-fuzzer 42127 371922 46102 0 3 0x4000082 thrsleep syz-fuzzer 42127 471021 46102 0 3 0x4000082 thrsleep syz-fuzzer 42127 419614 46102 0 3 0x4000082 thrsleep syz-fuzzer 42127 90853 46102 0 3 0x4000082 kqread syz-fuzzer 42127 52169 46102 0 3 0x4000082 thrsleep syz-fuzzer 42127 325781 46102 0 3 0x4000082 thrsleep syz-fuzzer 42127 160513 46102 0 2 0x4000002 syz-fuzzer 42127 437214 46102 0 3 0x4000082 thrsleep syz-fuzzer 46102 408961 68390 0 3 0x10008a pause ksh 68390 51417 4951 0 3 0x92 select sshd 88324 455571 1 0 3 0x100083 ttyin getty 4951 224470 1 0 3 0x80 select sshd 6709 101588 77532 74 3 0x100092 bpf pflogd 77532 419024 1 0 3 0x80 netio pflogd 89269 302392 78849 73 3 0x100090 kqread syslogd 78849 39153 1 0 3 0x100082 netio syslogd 34966 519668 1 77 3 0x100090 poll dhclient 65170 129453 1 0 3 0x80 poll dhclient 49256 331966 0 0 3 0x14200 bored smr 88446 158272 0 0 2 0x14200 zerothread 26968 286311 0 0 3 0x14200 aiodoned aiodoned 30206 126496 0 0 3 0x14200 syncer update 53947 206364 0 0 3 0x14200 cleaner cleaner 12858 124956 0 0 3 0x14200 reaper reaper 10392 106705 0 0 3 0x14200 pgdaemon pagedaemon 55444 34630 0 0 3 0x14200 bored crynlk 8459 392088 0 0 3 0x14200 bored crypto 52368 297309 0 0 3 0x40014200 acpi0 acpi0 19840 216325 0 0 3 0x40014200 idle1 31166 128728 0 0 3 0x14200 bored softnet 70626 257219 0 0 3 0x14200 bored systqmp 74158 205040 0 0 3 0x14200 bored systq 55686 121224 0 0 3 0x40014200 bored softclock 40778 190861 0 0 3 0x40014200 idle0 1 131149 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 34175 (syz-executor.0) thread 0xffff800023f8d3b0 (131900) exclusive rwlock futex r = 0 (0xffffffff82536990) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 sys_futex+0x102 sys/kern/sys_futex.c:109 #2 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #2 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #3 Xsyscall+0x128 Process 34175 (syz-executor.0) thread 0xffff800023f8cc60 (492041) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82667d70) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 #2 mi_switch+0x392 sys/kern/sched_bsd.c:435 #3 yield+0xbb sys/kern/sched_bsd.c:310 #4 malloc+0xa4 sys/kern/kern_malloc.c:183 #5 unveil_add+0x162 sys/kern/kern_unveil.c:548 #6 sys_unveil+0x416 sys/kern/vfs_syscalls.c:1038 #7 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #8 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9545 6423K 6939K 78643K 11422 0 pcb 13 8K 8K 78643K 113 0 rtable 114 12K 13K 78643K 416 0 ifaddr 92 16K 16K 78643K 138 0 counters 43 33K 34K 78643K 57 0 ioctlops 0 0K 4K 78643K 1536 0 iov 0 0K 28K 78643K 674 0 mount 1 1K 1K 78643K 1 0 vnodes 1215 76K 77K 78643K 1732 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 14 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 755 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 1403 0 sigio 0 0K 0K 78643K 12 0 proc 65 95K 95K 78643K 521 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 47 0 in_multi 54 2K 2K 78643K 126 0 ether_multi 1 0K 0K 78643K 16 0 mrt 0 0K 0K 78643K 20 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 1K 78643K 888 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 130 72K 80K 78643K 5674 0 UVM aobj 22 2K 2K 78643K 22 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 55 0 NDP 16 0K 0K 78643K 34 0 temp 121 3040K 3104K 78643K 15701 0 kqueue 3 4K 12K 78643K 159 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 10 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 59 0 57 1 0 1 1 0 8 0 rtentry 112 87 0 43 2 0 2 2 0 8 0 unpcb 120 938 0 928 1 0 1 1 0 8 0 syncache 264 10 0 10 4 4 0 1 0 8 0 tcpcb 544 800 0 796 1 0 1 1 0 8 0 inpcb 280 3027 0 3019 9 7 2 2 0 8 1 rttmr 72 8 0 8 3 3 0 1 0 8 0 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 14 0 10 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 2 0 2 1 1 0 1 0 482 0 pffrnode 88 2 0 2 1 1 0 1 0 8 0 pffrent 40 90 0 90 1 1 0 1 0 8 0 pfosfp 40 846 0 846 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfstitem 24 54 0 43 1 0 1 1 0 8 0 pfstkey 112 54 0 43 1 0 1 1 0 8 0 pfstate 328 54 0 43 3 2 1 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 381 0 198 13 1 12 12 0 8 0 art_table 32 383 0 198 2 0 2 2 0 8 0 art_node 16 86 0 45 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 5 3 2 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 749 0 739 1 0 1 1 0 8 0 shmpl 112 20 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4002 0 2602 89 0 89 89 0 8 0 ffsino 272 4002 0 2602 95 0 95 95 0 8 0 nchpl 144 7159 0 5563 60 0 60 60 0 8 0 uvmvnodes 72 4255 0 0 78 0 78 78 0 8 0 vnodes 208 4255 0 0 224 0 224 224 0 8 0 namei 1024 23574 0 23572 3 2 1 1 0 8 0 percpumem 16 39 0 7 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 11 0 6 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 17098 0 17098 9 8 1 7 0 8 1 plimitpl 152 47 0 39 1 0 1 1 0 8 0 sigapl 424 1638 0 1585 6 0 6 6 0 8 0 futexpl 56 31519 0 31517 3 2 1 1 0 8 0 knotepl 112 270 0 251 1 0 1 1 0 8 0 kqueuepl 144 444 0 441 1 0 1 1 0 8 0 pipelkpl 48 188 0 178 1 0 1 1 0 8 0 pipepl 120 376 0 357 1 0 1 1 0 8 0 fdescpl 496 1600 0 1584 3 0 3 3 0 8 0 filepl 152 15771 0 15671 8 3 5 6 0 8 1 lockfpl 104 188 0 187 1 0 1 1 0 8 0 lockfspl 48 61 0 60 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 6059 0 6050 1 0 1 1 0 8 0 zombiepl 144 2329 0 2329 2 1 1 1 0 8 1 processpl 984 1638 0 1585 7 0 7 7 0 8 0 procpl 624 4483 0 4418 7 1 6 6 0 8 0 sosppl 128 5 0 5 2 2 0 1 0 8 0 sockpl 400 4036 0 4017 13 9 4 5 0 8 2 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 13 0 0 2 0 2 2 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 270 0 0 33 3 30 33 0 8 0 mtagpl 80 34 0 0 1 0 1 1 0 8 0 mbufpl 256 394 0 0 18 0 18 18 0 8 0 bufpl 280 5638 0 137 393 0 393 393 0 8 0 anonpl 16 139903 0 124887 76 14 62 69 0 124 0 amapchunkpl 152 8992 0 8853 26 19 7 20 0 158 0 amappl16 192 6888 0 6073 45 3 42 44 0 8 0 amappl15 184 9 0 7 1 0 1 1 0 8 0 amappl14 176 24 0 20 1 0 1 1 0 8 0 amappl13 168 84 0 79 1 0 1 1 0 8 0 amappl12 160 12 0 9 1 0 1 1 0 8 0 amappl11 152 63 0 47 1 0 1 1 0 8 0 amappl10 144 153 0 150 1 0 1 1 0 8 0 amappl9 136 1584 0 1581 1 0 1 1 0 8 0 amappl8 128 1594 0 1552 2 0 2 2 0 8 0 amappl7 120 123 0 112 1 0 1 1 0 8 0 amappl6 112 30 0 24 1 0 1 1 0 8 0 amappl5 104 1477 0 1461 1 0 1 1 0 8 0 amappl4 96 535 0 503 1 0 1 1 0 8 0 amappl3 88 166 0 160 1 0 1 1 0 8 0 amappl2 80 11874 0 11803 2 0 2 2 0 8 0 amappl1 72 44833 0 44398 23 13 10 18 0 8 0 amappl 80 4717 0 4670 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 21 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1611 0 1590 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1611 0 1590 1 0 1 1 0 8 0 vmmpekpl 168 15180 0 15145 2 0 2 2 0 8 0 vmmpepl 168 201494 0 199514 132 40 92 117 0 357 0 vmsppl 368 1610 0 1590 2 0 2 2 0 8 0 pdppl 4096 3230 0 3185 6 0 6 6 0 8 0 pvpl 32 465709 0 447436 206 54 152 168 0 265 3 pmappl 232 1610 0 1590 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 296 0 19 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace unveil_find_cover(0,ffff800023f8cc60) at unveil_find_cover+0xc8 sys/kern/kern_unveil.c:308 unveil_add_vnode(ffff800023f8cc60,fffffd8064d9cc48) at unveil_add_vnode+0x2b5 sys/kern/kern_unveil.c:508 unveil_add(ffff800023f8cc60,ffff80002403ae98,ffff80002403af73) at unveil_add+0x27b sys/kern/kern_unveil.c:621 sys_unveil(ffff800023f8cc60,ffff80002403afd8,ffff80002403b020) at sys_unveil+0x416 sys/kern/vfs_syscalls.c:1038 syscall(ffff80002403b0a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002403b0a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c608e0fa00, count: -6 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020e00ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82667b68) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82667b68) at __mp_lock+0x127 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82667b68,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020f6d030,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020f6d030,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020f6d030,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff82611318,120,ffffffff821f05f5,2) at tsleep+0x1cc sys/kern/kern_synch.c:155 sys_nanosleep(ffff800020e6c008,ffff800020f6d160,ffff800020f6d1b0) at sys_nanosleep+0x205 sys/kern/kern_time.c:297 syscall(ffff800020f6d230) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020f6d230) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdf350, count: -12