uvm_fault(0xffffffff827df520, 0xfffffd0000000008, 0, 2) -> e kernel: page fault trap, code=0 Stopped at soreceive+0x1100: movq %rbx,0x8(%r13) ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff827df520, 0xfffffd0000000008, 0, 2) -> e soreceive(fffffd806f68c320,0,ffff800020e1d878,0,0,ffff800020e1d784) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f68c320,0,ffff800020e1d878,0,0,ffff800020e1d784) at soreceive+0x1100 sys/kern/uipc_socket.c:855 end trace frame: 0xffff800020e1d7c0, count: 0 ddb{1}> trace soreceive(fffffd806f68c320,0,ffff800020e1d878,0,0,ffff800020e1d784) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f68c320,0,ffff800020e1d878,0,0,ffff800020e1d784) at soreceive+0x1100 sys/kern/uipc_socket.c:855 soo_read(fffffd807cff65f0,ffff800020e1d878,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc758,6,ffff800020e1d878,0,ffff800020e1d960) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc758,ffff800020e1d910,ffff800020e1d960) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1d9e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1d9e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe6ff0, count: -6 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800020e1d760 rbx 0xfffffd806c9aad00 rdx 0x3044a acpi_pdirpa+0x1c2b2 rcx 0 rax 0 r8 0xffffffff818e1c51 soreceive+0x5c1 r9 0x3 r10 0x2ba6833eecc9918d r11 0xcfdd56f2a47b3217 r12 0x7b4 r13 0xfffffd0000000000 r14 0 r15 0xfffffd806f68c320 rip 0xffffffff818e2790 soreceive+0x1100 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020e1d670 ss 0x10 soreceive+0x1100: movq %rbx,0x8(%r13) ddb{1}> show proc PROC (dhclient) pid=236083 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddd5f8,0xffff800020ddc9d8 process=0xffff800020df0b98 user=0xffff800020e18000, vmspace=0xfffffd807efff450 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 99560 57205 39613 0 2 0 syz-executor.0 52235 176963 2333 0 2 0 syz-executor.1 52235 457054 2333 0 2 0x4000000 syz-executor.1 2333 180241 56747 0 3 0x82 nanosleep syz-executor.1 39613 111082 56747 0 3 0x82 nanosleep syz-executor.0 56747 21236 44317 0 7 0x2 syz-fuzzer 56747 384994 44317 0 3 0x4000082 nanosleep syz-fuzzer 56747 155700 44317 0 3 0x4000082 thrsleep syz-fuzzer 56747 501402 44317 0 3 0x4000082 thrsleep syz-fuzzer 56747 177796 44317 0 3 0x4000082 kqread syz-fuzzer 56747 389288 44317 0 3 0x4000082 thrsleep syz-fuzzer 56747 184469 44317 0 3 0x4000082 thrsleep syz-fuzzer 56747 164980 44317 0 3 0x4000082 thrsleep syz-fuzzer 56747 459012 44317 0 2 0x4000002 syz-fuzzer 56747 1628 44317 0 3 0x4000082 thrsleep syz-fuzzer 44317 378764 61002 0 3 0x10008a pause ksh 61002 470615 16858 0 3 0x92 select sshd 12261 16321 1 0 3 0x100083 ttyopn getty 16858 263224 1 0 3 0x80 select sshd 93919 408327 26974 74 3 0x100092 bpf pflogd 26974 36577 1 0 3 0x80 netio pflogd 20355 21494 74633 73 3 0x100090 kqread syslogd 74633 83471 1 0 3 0x100082 netio syslogd 9881 509577 1 77 3 0x100090 poll dhclient *68418 236083 1 0 7 0 dhclient 86525 296430 0 0 3 0x14200 bored smr 4253 188451 0 0 2 0x14200 zerothread 87399 485285 0 0 3 0x14200 aiodoned aiodoned 79047 173671 0 0 3 0x14200 syncer update 22120 96805 0 0 3 0x14200 cleaner cleaner 99868 302945 0 0 3 0x14200 reaper reaper 95806 58209 0 0 3 0x14200 pgdaemon pagedaemon 76771 459733 0 0 3 0x14200 bored crynlk 29955 143774 0 0 3 0x14200 bored crypto 77183 435186 0 0 3 0x40014200 acpi0 acpi0 16109 219832 0 0 3 0x40014200 idle1 64812 395202 0 0 3 0x14200 bored softnet 179 125396 0 0 3 0x14200 bored systqmp 19818 387720 0 0 3 0x14200 bored systq 45577 63263 0 0 3 0x40014200 bored softclock 4668 454379 0 0 3 0x40014200 idle0 1 46177 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 68418 (dhclient) thread 0xffff800020ddc758 (236083) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82910c50) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 solock+0x66 sys/kern/uipc_socket2.c:292 #2 soreceive+0x114 sys/kern/uipc_socket.c:737 #3 soo_read+0x53 sys/kern/sys_socket.c:70 #4 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #5 sys_read+0x83 sys/kern/sys_generic.c:157 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9493 6407K 6659K 78643K 10680 0 pcb 13 8K 8K 78643K 25 0 rtable 83 2K 4K 78643K 224 0 ifaddr 50 11K 12K 78643K 61 0 counters 41 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1483 0 iov 0 0K 16K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1248 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 0K 78643K 30 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 115 0 proc 60 63K 95K 78643K 447 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 31 2K 2K 78643K 40 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 0K 0K 78643K 3 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 211 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 115 22K 38K 78643K 1275 0 UVM aobj 5 2K 2K 78643K 8 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 8 0 NDP 8 0K 0K 78643K 13 0 temp 79 3857K 3921K 78643K 2508 0 kqueue 3 4K 14K 78643K 12 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 6 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 29 0 27 1 0 1 1 0 8 0 rtentry 112 47 0 14 2 0 2 2 0 8 0 unpcb 120 35 0 25 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 tcpqe 32 347 0 347 1 0 1 1 0 8 1 tcpcb 544 34 0 29 1 0 1 1 0 8 0 inpcb 296 235 0 225 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 7 0 4 1 0 1 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 1 0 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 15 0 0 1 0 1 1 0 8 0 pfstkey 112 15 0 0 1 0 1 1 0 8 0 pfstate 328 15 0 0 2 0 2 2 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 256 190 0 46 12 0 12 12 0 8 1 art_table 32 191 0 46 2 0 2 2 0 8 0 art_node 16 46 0 16 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 6 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1538 0 133 89 0 89 89 0 8 0 ffsino 272 1538 0 133 95 1 94 94 0 8 0 nchpl 144 1872 0 260 60 0 60 60 0 8 0 uvmvnodes 72 1598 0 0 30 0 30 30 0 8 0 vnodes 208 1598 0 0 85 0 85 85 0 8 0 namei 1024 5027 0 5027 2 1 1 1 0 8 1 percpumem 16 32 0 1 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 2 1 0 1 1 0 8 0 scxspl 192 5665 0 5665 8 3 5 7 0 8 5 plimitpl 152 25 0 17 1 0 1 1 0 8 0 sigapl 424 330 0 298 4 0 4 4 0 8 0 futexpl 56 1394 0 1394 1 0 1 1 0 8 1 knotepl 112 72 0 53 1 0 1 1 0 8 0 kqueuepl 144 24 0 21 1 0 1 1 0 8 0 pipelkpl 48 89 0 79 1 0 1 1 0 8 0 pipepl 120 178 0 159 1 0 1 1 0 8 0 fdescpl 496 315 0 298 3 0 3 3 0 8 0 filepl 152 1718 0 1615 6 1 5 5 0 8 0 lockfpl 104 39 0 38 1 0 1 1 0 8 0 lockfspl 48 11 0 10 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 94 0 85 1 0 1 1 0 8 0 zombiepl 144 298 0 298 2 1 1 1 0 8 1 processpl 984 330 0 298 6 1 5 5 0 8 0 procpl 624 501 0 459 4 0 4 4 0 8 0 srpgc 64 2 0 2 1 0 1 1 0 8 1 sockpl 400 299 0 277 5 1 4 4 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 174 0 0 21 0 21 21 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 194 0 0 12 0 12 12 0 8 0 bufpl 280 3527 0 133 243 0 243 243 0 8 0 anonpl 16 47787 0 31404 76 1 75 75 0 124 8 amapchunkpl 152 1938 0 1778 21 0 21 21 0 158 13 amappl16 192 1392 0 525 45 0 45 45 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 36 0 28 1 0 1 1 0 8 0 amappl13 168 112 0 106 1 0 1 1 0 8 0 amappl12 160 6 0 5 2 1 1 1 0 8 0 amappl11 152 57 0 42 1 0 1 1 0 8 0 amappl10 144 17 0 12 1 0 1 1 0 8 0 amappl9 136 429 0 424 1 0 1 1 0 8 0 amappl8 128 370 0 345 1 0 1 1 0 8 0 amappl7 120 117 0 106 1 0 1 1 0 8 0 amappl6 112 28 0 24 1 0 1 1 0 8 0 amappl5 104 174 0 157 1 0 1 1 0 8 0 amappl4 96 531 0 501 1 0 1 1 0 8 0 amappl3 88 142 0 136 1 0 1 1 0 8 0 amappl2 80 1568 0 1498 2 0 2 2 0 8 0 amappl1 72 16953 0 16507 23 13 10 18 0 8 0 amappl 80 767 0 720 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 7 0 3 1 0 1 1 0 8 0 uaddrrnd 24 319 0 300 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 319 0 300 1 0 1 1 0 8 0 vmmpekpl 168 6366 0 6328 2 0 2 2 0 8 0 vmmpepl 168 45559 0 43461 121 7 114 116 0 357 21 vmsppl 368 318 0 300 2 0 2 2 0 8 0 pdppl 4096 645 0 602 7 1 6 6 0 8 0 pvpl 32 157924 0 138403 179 0 179 179 0 265 20 pmappl 232 318 0 300 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 261 0 7 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82714ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:79 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffc8518, count: -6 ddb{0}> machine ddbcpu 1 Stopped at soreceive+0x1100: movq %rbx,0x8(%r13) ddb{1}> trace soreceive(fffffd806f68c320,0,ffff800020e1d878,0,0,ffff800020e1d784) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f68c320,0,ffff800020e1d878,0,0,ffff800020e1d784) at soreceive+0x1100 sys/kern/uipc_socket.c:855 soo_read(fffffd807cff65f0,ffff800020e1d878,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc758,6,ffff800020e1d878,0,ffff800020e1d960) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc758,ffff800020e1d910,ffff800020e1d960) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1d9e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1d9e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe6ff0, count: -6