uvm_fault(0xfffffd806bc09aa0, 0x8e42, 0, 1) -> e kernel: page fault trap, code=0 Stopped at pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd806bc09aa0, 0x8e42, 0, 1) -> e pool_do_put(ffffffff82829f58,fffffd805e2fb900) at pool_do_put+0x12e sys/kern/subr_pool.c:836 end trace frame: 0xffff80001f794d30, count: 0 ddb> trace pool_do_put(ffffffff82829f58,fffffd805e2fb900) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82829f58,fffffd805e2fb900) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805e2fb900) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000aee200,800100,ffff800000aee240,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff800000aee200,ffff800000ac6000) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac6000,ffff80001f795290,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001f795290,ffff800000ac6000) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd80533d0970,8080691a,ffff80001f795290,ffff80001d6a9278) at ifioctl+0xe60 sys/net/if.c:2180 sys_ioctl(ffff80001d6a9278,ffff80001f7953a8,ffff80001f7953f0) at sys_ioctl+0x4a1 syscall(ffff80001f795470) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xefb4695f70, count: -11 ddb> show registers rdi 0xffffffff811f72f5 pool_do_put+0x125 rsi 0x14d rbp 0xffff80001f794ce0 rbx 0x8e3a __ALIGN_SIZE+0x7e3a rdx 0x14e rcx 0xffff80001d780000 rax 0xffff80001d780000 r8 0x4 r9 0x5 r10 0x50474adad38a7f58 r11 0x7884f733d8984692 r12 0xfffffd805e2fb900 r13 0xb42b1fec618d8e3a r14 0xffffffff82829f58 mbpool r15 0xfffffd806c3c4ee0 rip 0xffffffff811f72fe pool_do_put+0x12e cs 0x8 rflags 0x10296 __ALIGN_SIZE+0xf296 rsp 0xffff80001f794c30 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.0) pid=386526 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff80001d71d390,0xffffffff827f56e0 process=0xffff80001d6c43b0 user=0xffff80001f790000, vmspace=0xfffffd806bc09aa0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 15965 499543 50485 0 2 0 syz-executor.0 *15965 386526 50485 0 7 0x4000000 syz-executor.0 91482 408268 0 0 3 0x14200 bored sosplice 48593 258194 86618 0 3 0x82 nanosleep syz-executor.1 50485 130643 86618 0 3 0x82 nanosleep syz-executor.0 86618 2550 70263 0 3 0x82 thrsleep syz-fuzzer 86618 317570 70263 0 3 0x4000082 thrsleep syz-fuzzer 86618 225851 70263 0 3 0x4000082 kqread syz-fuzzer 86618 30517 70263 0 3 0x4000082 thrsleep syz-fuzzer 86618 93072 70263 0 3 0x4000082 thrsleep syz-fuzzer 86618 120544 70263 0 3 0x4000082 thrsleep syz-fuzzer 86618 388900 70263 0 3 0x4000082 thrsleep syz-fuzzer 86618 139404 70263 0 3 0x4000082 thrsleep syz-fuzzer 70263 503830 81859 0 3 0x10008a pause ksh 81859 152617 98756 0 3 0x92 select sshd 42549 234791 1 0 3 0x100083 ttyin getty 98756 135382 1 0 3 0x80 select sshd 63786 180561 59186 73 3 0x100090 kqread syslogd 59186 408610 1 0 3 0x100082 netio syslogd 60669 163981 1 77 3 0x100090 poll dhclient 33512 40714 1 0 3 0x80 poll dhclient 13888 337974 0 0 3 0x14200 bored smr 86207 15188 0 0 2 0x14200 zerothread 5058 475366 0 0 3 0x14200 aiodoned aiodoned 46438 499401 0 0 3 0x14200 syncer update 38487 380393 0 0 3 0x14200 cleaner cleaner 84474 73891 0 0 3 0x14200 reaper reaper 12766 44243 0 0 3 0x14200 pgdaemon pagedaemon 61667 15228 0 0 3 0x14200 bored crynlk 15758 146799 0 0 3 0x14200 bored crypto 13104 316358 0 0 3 0x40014200 acpi0 acpi0 27745 258568 0 0 3 0x14200 bored softnet 46511 327522 0 0 3 0x14200 bored systqmp 49892 372053 0 0 3 0x14200 bored systq 46938 24645 0 0 3 0x40014200 bored softclock 96632 123922 0 0 3 0x40014200 idle0 1 140678 0 0 3 0x82 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 9469 6331K 6581K 78643K 10712 0 pcb 13 8K 8K 78643K 30 0 rtable 114 3K 4K 78643K 266 0 ifaddr 56 12K 12K 78643K 97 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 28 0 ioctlops 0 0K 4K 78643K 23 0 iov 0 0K 12K 78643K 9 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1272 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 50 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 259 0 sigio 0 0K 0K 78643K 2 0 proc 48 38K 63K 78643K 366 0 subproc 32 2K 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 8 0 in_multi 44 2K 2K 78643K 48 0 ether_multi 1 0K 0K 78643K 1 0 mrt 0 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 187 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 126 23K 23K 78643K 1456 0 UVM aobj 7 4K 4K 78643K 13 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 10 0 NDP 8 0K 0K 78643K 19 0 temp 76 3848K 3912K 78643K 6233 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 0 1 0 1 1 0 8 0 rtpcb 80 27 0 25 1 0 1 1 0 8 0 rtentry 112 53 0 5 2 0 2 2 0 8 0 unpcb 120 70 0 61 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpqe 32 368 0 368 1 1 0 1 0 8 0 tcpcb 544 33 0 29 1 0 1 1 0 8 0 inpcb 296 114 0 105 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 11 0 2 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 1 0 1 0 8 0 pfrktable 1344 4 0 4 1 0 1 1 0 8 1 pfrule 1360 4 0 4 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 233 0 17 15 0 15 15 0 8 1 art_table 32 234 0 17 2 0 2 2 0 8 0 art_node 16 52 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 46 0 36 1 0 1 1 0 8 0 shmpl 112 10 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1691 0 291 88 0 88 88 0 8 0 ffsino 240 1691 0 291 83 0 83 83 0 8 0 nchpl 144 2380 0 784 60 0 60 60 0 8 0 uvmvnodes 72 1764 0 0 33 0 33 33 0 8 0 vnodes 208 1764 0 0 93 0 93 93 0 8 0 namei 1024 5870 0 5870 2 1 1 1 0 8 1 scxspl 192 6614 0 6614 1 0 1 1 0 8 1 plimitpl 152 18 0 11 1 0 1 1 0 8 0 sigapl 424 446 0 417 4 0 4 4 0 8 0 futexpl 56 3591 0 3591 1 0 1 1 0 8 1 knotepl 112 63 0 44 1 0 1 1 0 8 0 kqueuepl 144 28 0 26 1 0 1 1 0 8 0 pipepl 272 89 0 79 1 0 1 1 0 8 0 fdescpl 432 431 0 417 2 0 2 2 0 8 0 filepl 120 2144 0 2047 4 0 4 4 0 8 1 lockfpl 104 49 0 48 1 0 1 1 0 8 0 lockfspl 48 15 0 14 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 14 1 0 1 1 0 8 0 ucredpl 96 169 0 162 1 0 1 1 0 8 0 zombiepl 144 417 0 416 2 1 1 1 0 8 0 processpl 928 446 0 416 4 0 4 4 0 8 0 procpl 624 732 0 694 4 0 4 4 0 8 1 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 400 217 0 197 3 0 3 3 0 8 0 mcl16k 16384 2 0 2 2 1 1 1 0 8 1 mcl12k 12288 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 2 1 1 1 0 8 1 mcl4k 4096 41 0 41 2 1 1 1 0 8 1 mcl2k2 2112 2 0 2 2 1 1 1 0 8 1 mcl2k 2048 92660 0 92595 20 11 9 18 0 8 0 mtagpl 96 10 0 2 2 1 1 1 0 8 0 mbufpl 256 147639 0 147528 15 5 10 14 0 8 0 mbufpl: pool(0xffffffff82829f58:mbufpl): free list modified: page 0xfffffd805e2fb000; item ordinal 6; addr 0xfffffd805e2fba00 (p 0xfffffd806c3c4000); offset 0x0=0x0 mbufpl: pool(0xffffffff82829f58:mbufpl): page inconsistency: page 0xfffffd805e2fb000; item ordinal 7; addr 0x8e3a bufpl 280 3776 0 126 261 0 261 261 0 8 0 anonpl 16 65376 0 48449 94 1 93 93 0 107 7 amapchunkpl 152 1996 0 1854 10 2 8 8 0 158 1 amappl16 192 2379 0 1203 65 0 65 65 0 8 6 amappl15 184 96 0 94 1 0 1 1 0 8 0 amappl14 176 28 0 22 1 0 1 1 0 8 0 amappl13 168 27 0 24 1 0 1 1 0 8 0 amappl12 160 142 0 137 1 0 1 1 0 8 0 amappl11 152 55 0 44 1 0 1 1 0 8 0 amappl10 144 107 0 102 1 0 1 1 0 8 0 amappl9 136 369 0 368 1 0 1 1 0 8 0 amappl8 128 329 0 288 2 0 2 2 0 8 0 amappl7 120 200 0 187 1 0 1 1 0 8 0 amappl6 112 26 0 19 1 0 1 1 0 8 0 amappl5 104 515 0 503 1 0 1 1 0 8 0 amappl4 96 427 0 396 1 0 1 1 0 8 0 amappl3 88 106 0 98 1 0 1 1 0 8 0 amappl2 80 2594 0 2531 2 0 2 2 0 8 0 amappl1 72 18526 0 18114 22 13 9 17 0 8 0 amappl 80 979 0 935 3 1 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 12 0 6 1 0 1 1 0 8 0 uaddrrnd 24 431 0 417 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 431 0 417 1 0 1 1 0 8 0 vmmpekpl 168 6622 0 6594 2 0 2 2 0 8 0 vmmpepl 168 59491 0 57215 119 10 109 110 0 357 10 vmsppl 272 430 0 417 2 1 1 2 0 8 0 pdppl 4096 868 0 834 6 1 5 6 0 8 0 pvpl 32 187079 0 167152 215 0 215 215 0 265 20 pmappl 200 430 0 417 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 253 0 24 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pool_do_put(ffffffff82829f58,fffffd805e2fb900) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82829f58,fffffd805e2fb900) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805e2fb900) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000aee200,800100,ffff800000aee240,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff800000aee200,ffff800000ac6000) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac6000,ffff80001f795290,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001f795290,ffff800000ac6000) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd80533d0970,8080691a,ffff80001f795290,ffff80001d6a9278) at ifioctl+0xe60 sys/net/if.c:2180 sys_ioctl(ffff80001d6a9278,ffff80001f7953a8,ffff80001f7953f0) at sys_ioctl+0x4a1 syscall(ffff80001f795470) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xefb4695f70, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace pool_do_put(ffffffff82829f58,fffffd805e2fb900) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82829f58,fffffd805e2fb900) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805e2fb900) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000aee200,800100,ffff800000aee240,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff800000aee200,ffff800000ac6000) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac6000,ffff80001f795290,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001f795290,ffff800000ac6000) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd80533d0970,8080691a,ffff80001f795290,ffff80001d6a9278) at ifioctl+0xe60 sys/net/if.c:2180 sys_ioctl(ffff80001d6a9278,ffff80001f7953a8,ffff80001f7953f0) at sys_ioctl+0x4a1 syscall(ffff80001f795470) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xefb4695f70, count: -11