uvm_fault(0xffffffff8253edf0, 0xfffffd0000000048, 0, 1) -> e kernel: page fault trap, code=0 Stopped at uvm_map_clean+0x44a: movl 0x48(%r15),%ebx ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff8253edf0, 0xfffffd0000000048, 0, 1) -> e uvm_map_clean(fffffd806e954178,c002cca000,c003138000,8) at uvm_map_clean+0x44a sys/uvm/uvm_map.c:4677 end trace frame: 0xffff800020f43460, count: 0 ddb{1}> trace uvm_map_clean(fffffd806e954178,c002cca000,c003138000,8) at uvm_map_clean+0x44a sys/uvm/uvm_map.c:4677 syscall(ffff800020f43470) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020f43470) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00004feb8, count: -3 ddb{1}> show registers rdi 0x11 rsi 0x10 rbp 0xffff800020f43390 rbx 0xc002d7c000 rdx 0x7 rcx 0 rax 0xfffffd80650aa000 r8 0xffffffff815a1263 uvm_map_clean+0x483 r9 0x5 r10 0x184c6023d21b710f r11 0xcfac7ccd6c814b0f r12 0xc003138000 r13 0xc002d7c000 r14 0xfffffd80650aa000 r15 0xfffffd0000000000 rip 0xffffffff815a122a uvm_map_clean+0x44a cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800020f432d0 ss 0x10 uvm_map_clean+0x44a: movl 0x48(%r15),%ebx ddb{1}> show proc PROC (syz-fuzzer) pid=178812 stat=onproc flags process=2 proc=4000000 pri=86, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020ed1d50,0xffff800020e6ceb8 process=0xffff800020ec9728 user=0xffff800020f3e000, vmspace=0xfffffd806e954178 estcpu=1, cpticks=6, pctcpu=0.2 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 81089 175303 79498 0 7 0x10 syz-executor.0 81089 411118 79498 0 3 0x4000090 fifow syz-executor.0 81089 109066 79498 0 3 0x4000090 fsleep syz-executor.0 81089 154319 79498 0 3 0x4000090 fifow syz-executor.0 81089 416687 79498 0 3 0x4000090 fifow syz-executor.0 81089 446265 79498 0 3 0x4000090 fsleep syz-executor.0 16409 36352 1 0 3 0x100083 ttyin getty 39470 387130 0 0 3 0x14200 bored sosplice 79498 234589 33331 0 3 0x82 nanosleep syz-executor.0 33331 99473 61265 0 3 0x82 thrsleep syz-fuzzer 33331 95824 61265 0 3 0x4000082 nanosleep syz-fuzzer 33331 97492 61265 0 3 0x4000082 kqread syz-fuzzer 33331 84567 61265 0 3 0x4000082 thrsleep syz-fuzzer 33331 184054 61265 0 3 0x4000082 thrsleep syz-fuzzer *33331 178812 61265 0 7 0x4000002 syz-fuzzer 33331 385736 61265 0 3 0x4000082 thrsleep syz-fuzzer 33331 352873 61265 0 3 0x4000082 thrsleep syz-fuzzer 33331 46603 61265 0 3 0x4000082 thrsleep syz-fuzzer 33331 234823 61265 0 3 0x4000082 thrsleep syz-fuzzer 61265 376716 22148 0 3 0x10008a pause ksh 22148 51877 51271 0 3 0x92 select sshd 51271 433487 1 0 3 0x80 select sshd 65066 240054 1625 74 3 0x100092 bpf pflogd 1625 179963 1 0 3 0x80 netio pflogd 21657 139722 48279 73 3 0x100090 kqread syslogd 48279 289533 1 0 3 0x100082 netio syslogd 17495 495008 1 77 3 0x100090 poll dhclient 87304 74984 1 0 3 0x80 poll dhclient 18199 197003 0 0 3 0x14200 bored smr 3164 111320 0 0 2 0x14200 zerothread 23267 53152 0 0 3 0x14200 aiodoned aiodoned 70008 150433 0 0 3 0x14200 syncer update 78367 340052 0 0 3 0x14200 cleaner cleaner 72006 230201 0 0 3 0x14200 reaper reaper 27581 7050 0 0 3 0x14200 pgdaemon pagedaemon 19428 146702 0 0 3 0x14200 bored crynlk 49592 26952 0 0 3 0x14200 bored crypto 8932 251241 0 0 3 0x40014200 acpi0 acpi0 60734 17507 0 0 3 0x40014200 idle1 82160 289644 0 0 3 0x14200 bored softnet 26377 50462 0 0 3 0x14200 bored systqmp 37476 506352 0 0 3 0x14200 bored systq 16121 436710 0 0 3 0x40014200 bored softclock 35097 22269 0 0 3 0x40014200 idle0 1 266331 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 33331 (syz-fuzzer) thread 0xffff800020e6cc38 (178812) shared rwlock vmmaplk r = 0 (0xfffffd806e954190) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 uvm_map_clean+0xe2 vm_map_lock_read_ln sys/uvm/uvm_map.c:5467 [inline] #1 uvm_map_clean+0xe2 sys/uvm/uvm_map.c:4628 #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 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8266c1b0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x400 sys/arch/amd64/amd64/trap.c:570 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9523 6425K 6819K 78643K 11119 0 pcb 14 8K 8K 78643K 124 0 rtable 82 3K 4K 78643K 301 0 ifaddr 74 14K 16K 78643K 125 0 counters 41 33K 34K 78643K 55 0 ioctlops 0 0K 4K 78643K 1491 0 iov 0 0K 28K 78643K 155 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1385 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 38 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 4 9K 25K 78643K 350 0 sigio 0 0K 0K 78643K 9 0 proc 63 63K 83K 78643K 501 0 subproc 16 1K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 35 0 in_multi 55 2K 3K 78643K 125 0 ether_multi 1 0K 0K 78643K 14 0 mrt 1 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 236 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 124 63K 71K 78643K 2198 0 UVM aobj 14 2K 2K 78643K 24 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 85 0 NDP 12 0K 0K 78643K 25 0 temp 89 3038K 3107K 78643K 11839 0 kqueue 3 4K 12K 78643K 36 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 8 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 30 0 28 1 0 1 1 0 8 0 rtentry 112 61 0 30 2 0 2 2 0 8 0 unpcb 120 150 0 138 1 0 1 1 0 8 0 syncache 264 7 0 7 3 2 1 1 0 8 1 sackhl 24 2 0 2 1 1 0 1 0 8 0 tcpqe 32 959 0 959 2 1 1 1 0 8 1 tcpcb 544 158 0 153 1 0 1 1 0 8 0 inpcb 280 665 0 655 5 3 2 2 0 8 1 rttmr 72 3 0 3 2 2 0 1 0 8 0 nd6 48 9 0 8 1 0 1 1 0 8 0 ppxss 1128 1 0 1 1 1 0 1 0 8 0 pffrag 232 3 0 3 1 1 0 1 0 482 0 pffrnode 88 3 0 3 1 1 0 1 0 8 0 pffrent 40 49 0 49 1 1 0 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 47 0 24 1 0 1 1 0 8 0 pfstkey 112 47 0 24 1 0 1 1 0 8 0 pfstate 328 47 0 24 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 246 0 117 13 1 12 12 0 8 2 art_table 32 247 0 117 2 0 2 2 0 8 0 art_node 16 60 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 14 2 2 0 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 34 0 24 1 0 1 1 0 8 0 shmpl 112 22 0 10 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1940 0 537 89 0 89 89 0 8 0 ffsino 272 1940 0 537 95 0 95 95 0 8 0 nchpl 144 2665 0 1075 60 0 60 60 0 8 0 uvmvnodes 72 2086 0 0 38 0 38 38 0 8 0 vnodes 208 2086 0 0 110 0 110 110 0 8 0 namei 1024 7313 0 7313 3 2 1 1 0 8 1 percpumem 16 38 0 7 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 7 0 2 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 7327 0 7327 10 9 1 7 0 8 1 plimitpl 152 41 0 34 1 0 1 1 0 8 0 sigapl 424 567 0 536 4 0 4 4 0 8 0 futexpl 56 5979 0 5977 3 2 1 1 0 8 0 knotepl 112 103 0 90 1 0 1 1 0 8 0 kqueuepl 144 72 0 70 1 0 1 1 0 8 0 pipelkpl 48 352 0 344 1 0 1 1 0 8 0 pipepl 120 704 0 689 1 0 1 1 0 8 0 fdescpl 496 551 0 536 3 0 3 3 0 8 0 filepl 152 3804 0 3723 6 1 5 5 0 8 0 lockfpl 104 236 0 235 1 0 1 1 0 8 0 lockfspl 48 65 0 64 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 294 0 283 1 0 1 1 0 8 0 zombiepl 144 536 0 536 3 2 1 1 0 8 1 processpl 984 567 0 536 6 1 5 5 0 8 0 procpl 624 1402 0 1357 5 1 4 5 0 8 0 sosppl 128 2 0 2 2 2 0 1 0 8 0 sockpl 400 845 0 822 7 4 3 4 0 8 0 mcl64k 65536 264 0 0 33 2 31 33 0 8 1 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 7 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 177 0 0 22 0 22 22 0 8 0 mtagpl 80 27 0 0 1 0 1 1 0 8 0 mbufpl 256 411 0 0 24 0 24 24 0 8 0 bufpl 280 4024 0 135 278 0 278 278 0 8 0 anonpl 16 63149 0 48586 75 15 60 69 0 124 0 amapchunkpl 152 3434 0 3290 21 13 8 20 0 158 0 amappl16 192 2413 0 1623 51 11 40 47 0 8 0 amappl15 184 161 0 158 1 0 1 1 0 8 0 amappl14 176 24 0 20 1 0 1 1 0 8 0 amappl13 168 25 0 24 1 0 1 1 0 8 0 amappl12 160 172 0 169 2 1 1 1 0 8 0 amappl11 152 57 0 42 1 0 1 1 0 8 0 amappl10 144 174 0 170 1 0 1 1 0 8 0 amappl9 136 382 0 380 1 0 1 1 0 8 0 amappl8 128 369 0 331 2 0 2 2 0 8 0 amappl7 120 277 0 264 1 0 1 1 0 8 0 amappl6 112 28 0 23 2 1 1 1 0 8 0 amappl5 104 466 0 447 1 0 1 1 0 8 0 amappl4 96 494 0 463 1 0 1 1 0 8 0 amappl3 88 120 0 114 1 0 1 1 0 8 0 amappl2 80 3633 0 3562 2 0 2 2 0 8 0 amappl1 72 21958 0 21529 23 13 10 18 0 8 0 amappl 80 1655 0 1607 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 23 0 10 1 0 1 1 0 8 0 uaddrrnd 24 558 0 538 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 558 0 538 1 0 1 1 0 8 0 vmmpekpl 168 9084 0 9053 2 0 2 2 0 8 0 vmmpepl 168 73654 0 71761 116 25 91 101 0 357 5 vmsppl 368 557 0 538 2 0 2 2 0 8 0 pdppl 4096 1124 0 1081 7 1 6 7 0 8 0 pvpl 32 211546 0 193912 169 19 150 169 0 265 5 pmappl 232 557 0 538 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 311 0 14 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82523ff0) 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(ffffffff8266bfa8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8266bfa8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffbbda0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at uvm_map_clean+0x44a: movl 0x48(%r15),%ebx ddb{1}> trace uvm_map_clean(fffffd806e954178,c002cca000,c003138000,8) at uvm_map_clean+0x44a sys/uvm/uvm_map.c:4677 syscall(ffff800020f43470) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020f43470) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00004feb8, count: -3