panic: kernel diagnostic assertion "frag->fr_firstoff[index] != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pf_norm.c", line 439 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 280725 43928 0 0 0 1 syz-executor.1 *387952 43928 0 0 0x4000000 0K syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823c5187) at panic+0x15e sys/kern/subr_prf.c:218 __assert(ffffffff82433244,ffffffff82451ec5,1b7,ffffffff823b74a3) at __assert+0x2b sys/kern/subr_prf.c:162 pf_frent_remove(fffffd806b5c3e88,fffffd80769f1e90) at pf_frent_remove+0x2a4 sys/net/pf_norm.c:460 pf_fillup_fragment(ffff8000222b7328,0,fffffd80769f1cd8,ffff8000222b756e) at pf_fillup_fragment+0xbeb sys/net/pf_norm.c:679 pf_reassemble(ffff8000222b74a0,1,ffff8000222b756e) at pf_reassemble+0xeb sys/net/pf_norm.c:781 pf_normalize_ip(ffff8000222b7460,ffff8000222b756e) at pf_normalize_ip+0x11d sys/net/pf_norm.c:1051 pf_test(2,1,ffff800000b36800,ffff8000222b7678) at pf_test+0x397 ip_input_if(ffff8000222b7678,ffff8000222b7684,4,0,ffff800000b36800) at ip_input_if+0x578 sys/netinet/ip_input.c:338 ipv4_input(ffff800000b36800,fffffd8069d85f00) at ipv4_input+0x48 sys/netinet/ip_input.c:237 tun_dev_write(5d01,ffff8000222b7968,ffff8000222e8000,2) at tun_dev_write+0x204 sys/net/if_tun.c:870 spec_write(ffff8000222b77c0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e8166a8,ffff8000222b7968,11,fffffd807f7b76c0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd806a6a6d30,ffff8000222b7968,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 end trace frame: 0xffff8000222b7950, count: 0 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel diagnostic assertion "frag->fr_firstoff[index] != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pf_norm.c", line 439 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823c5187) at panic+0x15e sys/kern/subr_prf.c:218 __assert(ffffffff82433244,ffffffff82451ec5,1b7,ffffffff823b74a3) at __assert+0x2b sys/kern/subr_prf.c:162 pf_frent_remove(fffffd806b5c3e88,fffffd80769f1e90) at pf_frent_remove+0x2a4 sys/net/pf_norm.c:460 pf_fillup_fragment(ffff8000222b7328,0,fffffd80769f1cd8,ffff8000222b756e) at pf_fillup_fragment+0xbeb sys/net/pf_norm.c:679 pf_reassemble(ffff8000222b74a0,1,ffff8000222b756e) at pf_reassemble+0xeb sys/net/pf_norm.c:781 pf_normalize_ip(ffff8000222b7460,ffff8000222b756e) at pf_normalize_ip+0x11d sys/net/pf_norm.c:1051 pf_test(2,1,ffff800000b36800,ffff8000222b7678) at pf_test+0x397 ip_input_if(ffff8000222b7678,ffff8000222b7684,4,0,ffff800000b36800) at ip_input_if+0x578 sys/netinet/ip_input.c:338 ipv4_input(ffff800000b36800,fffffd8069d85f00) at ipv4_input+0x48 sys/netinet/ip_input.c:237 tun_dev_write(5d01,ffff8000222b7968,ffff8000222e8000,2) at tun_dev_write+0x204 sys/net/if_tun.c:870 spec_write(ffff8000222b77c0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e8166a8,ffff8000222b7968,11,fffffd807f7b76c0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd806a6a6d30,ffff8000222b7968,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000212897a0,f0,ffff8000222b7968,0,ffff8000222b7a50) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000212897a0,ffff8000222b7a00,ffff8000222b7a50) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000222b7ad0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000222b7ad0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd925164aaa0, count: -18 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000222b7140 rbx 0xffff8000222b7150 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81653205 kprintf+0x145 r9 0x1 r10 0xfbcba20dae936708 r11 0x63edd0c039966271 r12 0x3000000008 r13 0xffff8000222b71f0 r14 0x100 r15 0x1 rip 0xffffffff81b2dcc8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000222b7130 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=387952 stat=onproc flags process=0 proc=4000000 pri=76, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021288000,0xffffffff82943318 process=0xffff800021236608 user=0xffff8000222b2000, vmspace=0xfffffd806e96e8a8 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=3, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 43928 280725 61354 0 7 0 syz-executor.1 *43928 387952 61354 0 7 0x4000000 syz-executor.1 20039 159113 62995 0 3 0x2 biowait syz-executor.0 61354 458082 62995 0 3 0x82 nanoslp syz-executor.1 62995 290087 50281 0 3 0x82 thrsleep syz-fuzzer 62995 78944 50281 0 3 0x4000082 nanoslp syz-fuzzer 62995 484323 50281 0 3 0x4000082 nanoslp syz-fuzzer 62995 455700 50281 0 3 0x4000082 thrsleep syz-fuzzer 62995 349137 50281 0 3 0x4000082 thrsleep syz-fuzzer 62995 107545 50281 0 3 0x4000082 thrsleep syz-fuzzer 62995 174359 50281 0 3 0x4000082 kqread syz-fuzzer 62995 36388 50281 0 3 0x4000082 thrsleep syz-fuzzer 50281 183482 50608 0 3 0x10008a sigsusp ksh 50608 235267 18159 0 3 0x92 select sshd 76753 291039 1 0 3 0x100083 ttyin getty 18159 199402 1 0 3 0x80 select sshd 59126 521126 42570 74 3 0x100092 bpf pflogd 42570 115899 1 0 3 0x80 netio pflogd 99972 127326 77274 73 3 0x100090 kqread syslogd 77274 110061 1 0 3 0x100082 netio syslogd 48655 390476 1 77 3 0x100090 poll dhclient 60980 184463 1 0 3 0x80 poll dhclient 557 28419 0 0 3 0x14200 bored smr 29571 117782 0 0 2 0x14200 zerothread 47877 447660 0 0 3 0x14200 aiodoned aiodoned 40249 236850 0 0 3 0x14200 syncer update 79326 89874 0 0 3 0x14200 cleaner cleaner 3474 514894 0 0 3 0x14200 reaper reaper 68819 108658 0 0 3 0x14200 pgdaemon pagedaemon 86730 445225 0 0 3 0x14200 bored crynlk 49531 153861 0 0 3 0x14200 bored crypto 67045 263692 0 0 3 0x14200 bored viomb 63412 319002 0 0 3 0x40014200 acpi0 acpi0 48195 259171 0 0 3 0x40014200 idle1 20022 445447 0 0 3 0x14200 bored softnet 76702 80185 0 0 3 0x14200 bored systqmp 33358 504843 0 0 3 0x14200 bored systq 58556 244059 0 0 3 0x40014200 bored softclock 71968 364721 0 0 3 0x40014200 idle0 1 455775 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pf_frag_mtx r = 0 (0xffffffff8284ac58) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pf_reassemble+0xd5 sys/net/pf_norm.c:780 #4 pf_normalize_ip+0x11d sys/net/pf_norm.c:1051 #5 pf_test+0x397 #6 ip_input_if+0x578 sys/netinet/ip_input.c:338 #7 ipv4_input+0x48 sys/netinet/ip_input.c:237 #8 tun_dev_write+0x204 sys/net/if_tun.c:870 #9 spec_write+0xd4 sys/kern/spec_vnops.c:309 #10 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 #11 vn_write+0x14e sys/kern/vfs_vnops.c:414 #12 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #13 sys_write+0x83 sys/kern/sys_generic.c:285 #14 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #14 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #15 Xsyscall+0x128 Process 43928 (syz-executor.1) thread 0xffff8000212897a0 (387952) exclusive rwlock netlock r = 0 (0xffffffff82728fd0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 tun_dev_write+0x1f9 sys/net/if_tun.c:869 #2 spec_write+0xd4 sys/kern/spec_vnops.c:309 #3 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 #4 vn_write+0x14e sys/kern/vfs_vnops.c:414 #5 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #6 sys_write+0x83 sys/kern/sys_generic.c:285 #7 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828f1fa0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #3 sys_write+0x83 sys/kern/sys_generic.c:285 #4 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #5 Xsyscall+0x128 exclusive mutex &pf_frag_mtx r = 0 (0xffffffff8284ac58) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pf_reassemble+0xd5 sys/net/pf_norm.c:780 #4 pf_normalize_ip+0x11d sys/net/pf_norm.c:1051 #5 pf_test+0x397 #6 ip_input_if+0x578 sys/netinet/ip_input.c:338 #7 ipv4_input+0x48 sys/netinet/ip_input.c:237 #8 tun_dev_write+0x204 sys/net/if_tun.c:870 #9 spec_write+0xd4 sys/kern/spec_vnops.c:309 #10 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 #11 vn_write+0x14e sys/kern/vfs_vnops.c:414 #12 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #13 sys_write+0x83 sys/kern/sys_generic.c:285 #14 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #14 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #15 Xsyscall+0x128 Process 20039 (syz-executor.0) thread 0xffff800021288a80 (159113) exclusive rrwlock inode r = 0 (0xfffffd806b6000a8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x416 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:461 #3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x135 sys/ufs/ffs/ffs_vfsops.c:1350 #5 ffs_inode_alloc+0x1e1 sys/ufs/ffs/ffs_alloc.c:394 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:459 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3075 #9 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b600708) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x416 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x5f7 sys/kern/vfs_lookup.c:249 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3060 #8 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9487 6432K 7337K 78643K 21256 0 pcb 13 8K 8K 78643K 148 0 rtable 105 3K 3K 78643K 353 0 ifaddr 44 10K 10K 78643K 74 0 counters 44 34K 34K 78643K 52 0 ioctlops 0 0K 4K 78643K 6120 0 iov 0 0K 8K 78643K 1384 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 7285 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 755 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 759 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 32635 0 sigio 0 0K 0K 78643K 196 0 proc 59 63K 83K 78643K 597 0 subproc 32 2K 2K 78643K 102 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 33 2K 2K 78643K 77 0 ether_multi 1 0K 0K 78643K 1 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 2K 78643K 452 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 161 26K 26K 78643K 73698 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 6 0K 0K 78643K 22 0 temp 106 3977K 4041K 78643K 115983 0 kqueue 3 4K 9K 78643K 3152 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 14 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 27 0 25 1 0 1 1 0 8 0 rtentry 112 89 0 45 2 0 2 2 0 8 0 unpcb 120 12139 0 12129 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpcb 736 107 0 103 5 4 1 3 0 8 0 inpcb 304 882 0 876 1 0 1 1 0 8 0 nd6 48 18 0 12 1 0 1 1 0 8 0 kcovpl 48 6 0 4 1 0 1 1 0 8 0 pffrag 232 13 0 9 2 1 1 1 0 482 0 pffrnode 88 11 0 7 2 1 1 1 0 8 0 pffrent 40 441 0 435 2 1 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 76 0 47 1 0 1 1 0 8 0 pfstkey 112 76 0 47 1 0 1 1 0 8 0 pfstate 320 76 0 47 5 2 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 256 365 0 176 12 0 12 12 0 8 0 art_table 32 366 0 176 2 0 2 2 0 8 0 art_node 16 88 0 48 1 0 1 1 0 8 0 semapl 112 757 0 747 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 35714 0 34289 90 0 90 90 0 8 0 ffsino 272 35714 0 34289 96 0 96 96 0 8 0 nchpl 144 76379 0 74788 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 182143 0 182142 1 0 1 1 0 8 0 percpumem 16 37 0 4 1 0 1 1 0 8 0 scxspl 216 206463 0 206462 9 8 1 8 0 8 0 plimitpl 152 19 0 11 1 0 1 1 0 8 0 sigapl 424 32838 0 32806 4 0 4 4 0 8 0 futexpl 56 135317 0 135317 1 0 1 1 0 8 1 knotepl 112 2740 0 2720 1 0 1 1 0 8 0 kqueuepl 168 4344 0 4342 1 0 1 1 0 8 0 pipepl 336 13095 0 13084 21 19 2 3 0 8 0 fdescpl 496 32822 0 32806 3 0 3 3 0 8 0 filepl 152 109533 0 109432 19 14 5 6 0 8 1 lockfpl 104 2167 0 2166 1 0 1 1 0 8 0 lockfspl 48 1006 0 1005 1 0 1 1 0 8 0 sessionpl 144 22 0 11 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 2501 0 2492 1 0 1 1 0 8 0 zombiepl 144 32806 0 32806 1 0 1 1 0 8 1 processpl 1080 32838 0 32806 3 0 3 3 0 8 0 procpl 672 72227 0 72187 4 0 4 4 0 8 0 sockpl 432 13048 0 13030 8 5 3 4 0 8 0 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 33 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 1 2 3 0 8 0 mcl4k 4096 58 0 0 4 1 3 3 0 8 0 mcl2k2 2112 22 0 0 2 0 2 2 0 8 0 mcl2k 2048 152 0 0 12 0 12 12 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 1060 0 0 16 1 15 15 0 8 0 bufpl 280 36646 0 30385 448 0 448 448 0 8 0 anonpl 24 2712335 0 2707092 87 50 37 61 0 186 0 amapchunkpl 152 114850 0 114687 17 9 8 8 0 158 0 amappl16 200 142542 0 142351 52 41 11 25 0 8 0 amappl15 192 3587 0 3584 1 0 1 1 0 8 0 amappl14 184 7 0 4 1 0 1 1 0 8 0 amappl13 176 11842 0 11841 1 0 1 1 0 8 0 amappl12 168 4535 0 4527 1 0 1 1 0 8 0 amappl11 160 48 0 35 1 0 1 1 0 8 0 amappl10 152 28 0 19 1 0 1 1 0 8 0 amappl9 144 12974 0 12974 1 1 0 1 0 8 0 amappl8 136 896 0 789 5 1 4 4 0 8 0 amappl7 128 13342 0 13332 1 0 1 1 0 8 0 amappl6 120 100 0 83 1 0 1 1 0 8 0 amappl5 112 29488 0 29475 1 0 1 1 0 8 0 amappl4 104 5313 0 5273 3 1 2 2 0 8 0 amappl3 96 13120 0 13111 1 0 1 1 0 8 0 amappl2 88 233271 0 233203 3 0 3 3 0 8 0 amappl1 80 926961 0 926483 26 14 12 21 0 8 0 amappl 88 72663 0 72610 2 0 2 2 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 64 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 32822 0 32806 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 32822 0 32806 1 0 1 1 0 8 0 vmmpekpl 168 207471 0 207448 2 0 2 2 0 8 0 vmmpepl 168 4047890 0 4046417 157 87 70 81 0 357 0 vmsppl 368 32821 0 32806 2 0 2 2 0 8 0 rwobjpl 56 851157 0 850204 41 26 15 19 0 8 0 pdppl 4096 65651 0 65612 61 20 41 45 0 8 2 pvpl 32 7421466 0 7413074 235 159 76 118 0 265 0 pmappl 232 32821 0 32806 2 1 1 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 338 0 49 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823c5187) at panic+0x15e sys/kern/subr_prf.c:218 __assert(ffffffff82433244,ffffffff82451ec5,1b7,ffffffff823b74a3) at __assert+0x2b sys/kern/subr_prf.c:162 pf_frent_remove(fffffd806b5c3e88,fffffd80769f1e90) at pf_frent_remove+0x2a4 sys/net/pf_norm.c:460 pf_fillup_fragment(ffff8000222b7328,0,fffffd80769f1cd8,ffff8000222b756e) at pf_fillup_fragment+0xbeb sys/net/pf_norm.c:679 pf_reassemble(ffff8000222b74a0,1,ffff8000222b756e) at pf_reassemble+0xeb sys/net/pf_norm.c:781 pf_normalize_ip(ffff8000222b7460,ffff8000222b756e) at pf_normalize_ip+0x11d sys/net/pf_norm.c:1051 pf_test(2,1,ffff800000b36800,ffff8000222b7678) at pf_test+0x397 ip_input_if(ffff8000222b7678,ffff8000222b7684,4,0,ffff800000b36800) at ip_input_if+0x578 sys/netinet/ip_input.c:338 ipv4_input(ffff800000b36800,fffffd8069d85f00) at ipv4_input+0x48 sys/netinet/ip_input.c:237 tun_dev_write(5d01,ffff8000222b7968,ffff8000222e8000,2) at tun_dev_write+0x204 sys/net/if_tun.c:870 spec_write(ffff8000222b77c0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e8166a8,ffff8000222b7968,11,fffffd807f7b76c0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd806a6a6d30,ffff8000222b7968,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000212897a0,f0,ffff8000222b7968,0,ffff8000222b7a50) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000212897a0,ffff8000222b7a00,ffff8000222b7a50) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000222b7ad0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000222b7ad0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd925164aaa0, count: -18 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d68ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_switch(57,ffffffff826ff980) at __sanitizer_cov_trace_switch+0x32 sys/dev/kcov.c:243 syscall(ffff8000222a9660) at syscall+0xc7 sys/arch/amd64/amd64/trap.c:541 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd5d00, count: 9 ddb{1}> trace x86_ipi_db(ffff800020d68ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_switch(57,ffffffff826ff980) at __sanitizer_cov_trace_switch+0x32 sys/dev/kcov.c:243 syscall(ffff8000222a9660) at syscall+0xc7 sys/arch/amd64/amd64/trap.c:541 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd5d00, count: -6