uvm_fault(0xffffffff827afde0, 0xfffffd0000000010, 0, 1) -> e kernel: page fault trap, code=0 Stopped at pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff827afde0, 0xfffffd0000000010, 0, 1) -> e pool_cache_get(ffffffff828ccef0) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828ccef0) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 end trace frame: 0xffff800020e63570, count: 0 ddb{1}> trace pool_cache_get(ffffffff828ccef0) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828ccef0) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff828ccef0,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ada540) at tcp_output+0x14e6 tcp_usrreq(fffffd806eadd648,9,fffffd8068bec900,0,0,ffff800020e41d50) at tcp_usrreq+0xa55 sosend(fffffd806eadd648,0,ffff800020e639a8,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e41d50,4,ffff800020e639a8,0,ffff800020e63a90) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e41d50,ffff800020e63a40,ffff800020e63a90) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e63b10) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e63b10) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0eb0, count: -10 ddb{1}> show registers rdi 0 rsi 0x7 rbp 0xffff800020e634b0 rbx 0x28ecc276c2af6814 rdx 0xffff800020e41d50 rcx 0 rax 0 r8 0xffffffff82226b8a tcp_output+0xbea r9 0x5 r10 0x3 r11 0x55ad8cb698ec71d5 r12 0xffffffff828ccef0 mbpool r13 0 r14 0xfffffd0000000000 r15 0xfffffd807f009d00 rip 0xffffffff820277b1 pool_cache_get+0x1b1 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800020e63450 ss 0x10 pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> show proc PROC (sshd) pid=422762 stat=onproc flags process=12 proc=0 pri=50, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020e40280,0xffff800020e40020 process=0xffff800020e39350 user=0xffff800020e5e000, vmspace=0xfffffd806e8ef2e8 estcpu=1, cpticks=1, pctcpu=0.1 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 12603 343671 62239 0 2 0 syz-executor.1 12603 521731 62239 0 3 0x4000080 fifow syz-executor.1 76399 20709 39350 0 7 0x2 syz-executor.0 76131 416433 0 0 3 0x14200 acct acct 4404 256949 0 0 3 0x14280 nfsidl nfsio 92778 414646 0 0 3 0x14280 nfsidl nfsio 63774 206638 0 0 3 0x14280 nfsidl nfsio 574 236819 0 0 3 0x14280 nfsidl nfsio 76450 416578 0 0 3 0x14280 nfsidl nfsio 92525 233040 0 0 3 0x14280 nfsidl nfsio 44649 58238 0 0 3 0x14280 nfsidl nfsio 4236 475237 0 0 3 0x14280 nfsidl nfsio 98402 284723 0 0 3 0x14280 nfsidl nfsio 85833 20437 0 0 3 0x14280 nfsidl nfsio 37391 24857 0 0 3 0x14280 nfsidl nfsio 58895 29832 0 0 3 0x14280 nfsidl nfsio 26032 14522 0 0 3 0x14280 nfsidl nfsio 10095 7438 0 0 3 0x14280 nfsidl nfsio 37644 116442 0 0 3 0x14280 nfsidl nfsio 98996 23997 0 0 3 0x14280 nfsidl nfsio 40384 117294 0 0 3 0x14280 nfsidl nfsio 25062 275508 0 0 3 0x14280 nfsidl nfsio 58675 114786 0 0 3 0x14280 nfsidl nfsio 20458 22803 0 0 3 0x14280 nfsidl nfsio 71956 168314 0 0 3 0x14200 bored sosplice 62239 210879 39350 0 3 0x82 nanosleep syz-executor.1 39350 320642 98239 0 3 0x82 thrsleep syz-fuzzer 39350 185166 98239 0 3 0x4000082 nanosleep syz-fuzzer 39350 219553 98239 0 3 0x4000082 kqread syz-fuzzer 39350 208267 98239 0 3 0x4000082 thrsleep syz-fuzzer 39350 22372 98239 0 3 0x4000082 thrsleep syz-fuzzer 39350 77947 98239 0 3 0x4000082 thrsleep syz-fuzzer 39350 378395 98239 0 3 0x4000082 thrsleep syz-fuzzer 39350 266119 98239 0 3 0x4000082 nanosleep syz-fuzzer 39350 316838 98239 0 3 0x4000082 thrsleep syz-fuzzer 39350 300004 98239 0 3 0x4000082 thrsleep syz-fuzzer 98239 460001 44260 0 3 0x10008a pause ksh *44260 422762 7297 0 7 0x12 sshd 29119 54558 1 0 3 0x100083 ttyin getty 7297 454220 1 0 3 0x80 select sshd 53093 464307 30023 74 3 0x100092 bpf pflogd 30023 254314 1 0 3 0x80 netio pflogd 5536 520439 86967 73 3 0x100090 kqread syslogd 86967 383127 1 0 3 0x100082 netio syslogd 78546 30380 1 77 3 0x100090 poll dhclient 63494 238910 1 0 3 0x80 poll dhclient 35230 482449 0 0 3 0x14200 bored smr 50748 509149 0 0 3 0x14200 pgzero zerothread 37516 358908 0 0 3 0x14200 aiodoned aiodoned 77119 294872 0 0 3 0x14200 syncer update 66134 221202 0 0 3 0x14200 cleaner cleaner 61797 337604 0 0 3 0x14200 reaper reaper 33409 399543 0 0 3 0x14200 pgdaemon pagedaemon 63630 80750 0 0 3 0x14200 bored crynlk 87974 385149 0 0 3 0x14200 bored crypto 14981 41613 0 0 3 0x40014200 acpi0 acpi0 88312 11300 0 0 3 0x40014200 idle1 71877 83925 0 0 3 0x14200 bored softnet 68861 420442 0 0 3 0x14200 bored systqmp 13426 376349 0 0 3 0x14200 bored systq 32190 196914 0 0 3 0x40014200 bored softclock 91324 511962 0 0 3 0x40014200 idle0 1 368379 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 44260 (sshd) thread 0xffff800020e41d50 (422762) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828b1058) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 #2 kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 #3 alltraps_kern_meltdown+0x7b #4 pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] #4 pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 #5 pool_get+0x91 sys/kern/subr_pool.c:572 #6 m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 #7 tcp_output+0x14e6 #8 tcp_usrreq+0xa55 #9 sosend+0x671 sys/kern/uipc_socket.c:555 #10 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #11 sys_write+0x83 sys/kern/sys_generic.c:285 #12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #13 Xsyscall+0x128 exclusive rwlock netlock r = 0 (0xffffffff827a4a28) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sosend+0x559 sys/kern/uipc_socket.c:543 #3 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #4 sys_write+0x83 sys/kern/sys_generic.c:285 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9545 6506K 6920K 78643K 11475 0 pcb 13 8K 8K 78643K 105 0 rtable 90 5K 8K 78643K 556 0 ifaddr 100 19K 19K 78643K 192 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 63 0 ioctlops 0 0K 4K 78643K 1555 0 iov 0 0K 16K 78643K 107 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1572 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 13 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 50 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 649 0 sigio 0 0K 0K 78643K 12 0 proc 62 63K 95K 78643K 598 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 40 0 in_multi 72 3K 3K 78643K 214 0 ether_multi 1 0K 0K 78643K 13 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 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 284 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 133 72K 88K 78643K 3100 0 UVM aobj 23 7K 7K 78643K 26 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 72 0 NDP 16 0K 0K 78643K 45 0 temp 121 3865K 3933K 78643K 9822 0 kqueue 3 4K 9K 78643K 21 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 14 0 7 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 61 0 59 1 0 1 1 0 8 0 rtentry 112 119 0 88 3 2 1 2 0 8 0 unpcb 120 1038 0 1026 1 0 1 1 0 8 0 syncache 264 9 0 9 3 3 0 1 0 8 0 tcpqe 32 485 0 485 4 4 0 2 0 8 0 tcpcb 544 204 0 200 1 0 1 1 0 8 0 inpcb 296 1062 0 1055 5 3 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 27 0 25 1 0 1 1 0 8 0 ppxss 1128 4 0 4 2 2 0 1 0 8 0 pffrag 232 2 0 1 1 0 1 1 0 482 0 pffrnode 88 2 0 1 1 0 1 1 0 8 0 pffrent 40 5 0 4 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 pfrktable 1344 25 0 24 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 60 0 12 1 0 1 1 0 8 0 pfstkey 112 60 0 12 2 0 2 2 0 8 0 pfstate 328 60 0 12 4 0 4 4 0 8 0 pfrule 1360 28 0 20 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 615 0 432 16 3 13 13 0 8 1 art_table 32 617 0 432 2 0 2 2 0 8 0 art_node 16 118 0 91 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 5 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 44 0 34 1 0 1 1 0 8 0 shmpl 112 24 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2371 0 963 90 1 89 89 0 8 0 ffsino 272 2371 0 963 97 2 95 95 0 8 0 nchpl 144 3464 0 1866 60 0 60 60 0 8 0 uvmvnodes 72 2659 0 0 49 0 49 49 0 8 0 vnodes 208 2659 0 0 140 0 140 140 0 8 0 namei 1024 9859 0 9859 5 4 1 1 0 8 1 percpumem 16 42 0 10 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 6 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 7 0 7 1 0 1 1 0 8 1 scxspl 192 10304 0 10304 12 11 1 5 0 8 1 plimitpl 152 54 0 46 1 0 1 1 0 8 0 sigapl 424 880 0 827 8 1 7 7 0 8 0 futexpl 56 9971 0 9971 4 3 1 1 0 8 1 knotepl 112 106 0 87 1 0 1 1 0 8 0 kqueuepl 144 84 0 79 1 0 1 1 0 8 0 pipepl 304 183 0 173 6 4 2 2 0 8 1 fdescpl 496 843 0 827 3 0 3 3 0 8 0 filepl 152 5867 0 5765 7 2 5 5 0 8 1 lockfpl 104 147 0 146 1 0 1 1 0 8 0 lockfspl 48 50 0 49 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 456 0 447 1 0 1 1 0 8 0 zombiepl 144 827 0 827 2 1 1 1 0 8 1 processpl 984 880 0 827 9 2 7 7 0 8 0 procpl 624 2232 0 2169 7 1 6 6 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 8 0 8 1 1 0 1 0 8 0 sockpl 400 2166 0 2145 12 8 4 5 0 8 1 mcl64k 65536 14 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 329 0 0 41 0 41 41 0 8 0 mtagpl 96 22 0 0 1 0 1 1 0 8 0 mbufpl 256 336 0 0 21 0 21 21 0 8 0 bufpl 280 4770 0 150 330 0 330 330 0 8 0 anonpl 16 94370 0 77779 92 8 84 84 0 124 16 amapchunkpl 152 5210 0 5051 21 0 21 21 0 158 12 amappl16 192 3766 0 2867 64 11 53 58 0 8 7 amappl15 184 4 0 2 1 0 1 1 0 8 0 amappl14 176 465 0 456 1 0 1 1 0 8 0 amappl13 168 42 0 39 1 0 1 1 0 8 0 amappl12 160 13 0 12 2 1 1 1 0 8 0 amappl11 152 402 0 386 1 0 1 1 0 8 0 amappl10 144 26 0 19 1 0 1 1 0 8 0 amappl9 136 393 0 391 1 0 1 1 0 8 0 amappl8 128 406 0 368 2 0 2 2 0 8 0 amappl7 120 131 0 118 1 0 1 1 0 8 0 amappl6 112 169 0 166 1 0 1 1 0 8 0 amappl5 104 560 0 544 1 0 1 1 0 8 0 amappl4 96 709 0 677 1 0 1 1 0 8 0 amappl3 88 565 0 559 1 0 1 1 0 8 0 amappl2 80 5650 0 5581 2 0 2 2 0 8 0 amappl1 72 28207 0 27760 24 14 10 18 0 8 0 amappl 80 2505 0 2456 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 25 0 3 1 0 1 1 0 8 0 uaddrrnd 24 849 0 827 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 849 0 827 1 0 1 1 0 8 0 vmmpekpl 168 10286 0 10246 2 0 2 2 0 8 0 vmmpepl 168 110352 0 108271 169 62 107 126 0 357 11 vmsppl 368 848 0 827 3 0 3 3 0 8 0 pdppl 4096 1705 0 1660 7 1 6 6 0 8 0 pvpl 32 287758 0 267896 222 23 199 199 0 265 36 pmappl 232 848 0 827 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 314 0 23 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(ffffffff82746ff0) 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(ffffffff828b0e50) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828b0e50) at __mp_lock+0x12e sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f __sanitizer_cov_trace_cmp4(be180,be181) at __sanitizer_cov_trace_cmp4+0x44 kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_cmp4(be180,be181) at __sanitizer_cov_trace_cmp4+0x44 trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(be180,be181) at __sanitizer_cov_trace_cmp4+0x44 sys/dev/kcov.c:135 __mp_lock(ffffffff828b0e50) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828b0e50) at __mp_lock+0x139 sys/kern/kern_lock.c:147 syscall(ffff8000241170d0) at syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff8000241170d0) at syscall+0x400 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7ff0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> trace pool_cache_get(ffffffff828ccef0) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828ccef0) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff828ccef0,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ada540) at tcp_output+0x14e6 tcp_usrreq(fffffd806eadd648,9,fffffd8068bec900,0,0,ffff800020e41d50) at tcp_usrreq+0xa55 sosend(fffffd806eadd648,0,ffff800020e639a8,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e41d50,4,ffff800020e639a8,0,ffff800020e63a90) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e41d50,ffff800020e63a40,ffff800020e63a90) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e63b10) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e63b10) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0eb0, count: -10