panic: unhandled af 0 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 53469 43005 0 0x14000 0x200 1 softnet0 db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834e2603) at panic+0x1e5 sys/kern/subr_prf.c:198 unhandled_af(0) at unhandled_af+0x1a sys/net/if.c:-1 if_output_tso(ffff80000004e858,ffff80002a1d0430,ffff800000c43d50,fffff6006fc21b00,5dc) at if_output_tso+0x22b ip_output(fffff600691a4800,0,fffff6006fe01300,800,0,fffff6006fe01398,7709554eca7e7389) at ip_output+0x107f sys/netinet/ip_output.c:437 tcp_output(ffff8000015b5000) at tcp_output+0x36e3 sys/netinet/tcp_output.c:1070 tcp_input_solocked(ffff80002a1d0880,ffff80002a1d088c,0,2,ffff80002a1d0878) at tcp_input_solocked+0x5a40 sys/netinet/tcp_input.c:2041 tcp_input_mlist(ffffffff839eb410,2) at tcp_input_mlist+0x93 sys/netinet/tcp_input.c:-1 if_input_process(ffff80000004e858,ffff80002a1d0968,0) at if_input_process+0x526 sys/net/if.c:1086 ifiq_process(ffff80000004ed08) at ifiq_process+0xcd sys/net/ifq.c:864 taskq_thread(ffff80000002c000) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: 4 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: unhandled af 0 ddb{1}> show kasan No such command ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834e2603) at panic+0x1e5 sys/kern/subr_prf.c:198 unhandled_af(0) at unhandled_af+0x1a sys/net/if.c:-1 if_output_tso(ffff80000004e858,ffff80002a1d0430,ffff800000c43d50,fffff6006fc21b00,5dc) at if_output_tso+0x22b ip_output(fffff600691a4800,0,fffff6006fe01300,800,0,fffff6006fe01398,7709554eca7e7389) at ip_output+0x107f sys/netinet/ip_output.c:437 tcp_output(ffff8000015b5000) at tcp_output+0x36e3 sys/netinet/tcp_output.c:1070 tcp_input_solocked(ffff80002a1d0880,ffff80002a1d088c,0,2,ffff80002a1d0878) at tcp_input_solocked+0x5a40 sys/netinet/tcp_input.c:2041 tcp_input_mlist(ffffffff839eb410,2) at tcp_input_mlist+0x93 sys/netinet/tcp_input.c:-1 if_input_process(ffff80000004e858,ffff80002a1d0968,0) at if_input_process+0x526 sys/net/if.c:1086 ifiq_process(ffff80000004ed08) at ifiq_process+0xcd sys/net/ifq.c:864 taskq_thread(ffff80000002c000) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: -11 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a1d0210 rbx 0xffff80002999ee07 rdx 0 rcx 0xffff800045ffe000 rax 0xffff80002999dff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6369a7df80577c0d r11 0x4950481f5e3bd221 r12 0xffff80002999ec08 r13 0 r14 0 r15 0x1 rip 0xffffffff82113a75 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a1d0200 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (softnet0) tid=53469 pid=43005 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045ffe298,0xffff800045ffe7d8 process=0xffff800045ff8000 user=0xffff80002a1cb000, vmspace=0xffffffff83ad0dc0 estcpu=0, cpticks=8, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 42061 521454 58540 32767 3 0x10 0x80 nanoslp syz-executor 42061 235748 58540 32767 3 0x10 0x4000080 kqread syz-executor 42061 359915 58540 32767 3 0x10 0x4000080 fsleep syz-executor 9378 146264 34089 32767 3 0x10 0x80 nanoslp syz-executor 34089 7765 52164 0 3 0x2 0x80 wait syz-executor 43812 443365 14769 32767 3 0x10 0 biowait syz-executor 8088 482024 9541 32767 3 0x10 0x80 piperd syz-executor 91099 95084 1379 32767 3 0x10 0x80 piperd syz-executor 58316 522701 92570 32767 3 0x10 0x80 piperd syz-executor 53322 83542 49066 32767 3 0x10 0x80 piperd syz-executor 58540 228097 80700 32767 3 0x10 0x80 nanoslp syz-executor 9541 110940 52164 0 3 0x2 0x80 wait syz-executor 14769 153637 52164 0 3 0x2 0x80 wait syz-executor 1379 23197 52164 0 3 0x2 0x80 wait syz-executor 49066 201941 52164 0 3 0x2 0x80 wait syz-executor 92570 301711 52164 0 3 0x2 0x80 wait syz-executor 80700 356831 52164 0 3 0x2 0x80 wait syz-executor 52164 185351 43878 0 3 0x2 0x80 nanoslp syz-executor 43878 291448 41674 0 3 0x100002 0x88 sigsusp ksh 41674 388112 54053 0 3 0x10 0x88 kqread sshd-session 54053 473963 44456 0 3 0x12 0x80 kqread sshd-session 16888 420543 1 0 3 0x100003 0x80 ttyin getty 44456 313916 1 0 3 0 0x88 kqread sshd 26949 93450 68453 73 3 0x1100010 0x80 kqread syslogd 68453 455354 1 0 3 0x100002 0x80 sbwait syslogd 10410 235853 1 0 3 0x100000 0x80 kqread resolvd 86644 165226 14315 77 3 0x100012 0x80 kqread dhcpleased 95452 76366 14315 77 3 0x100012 0x80 kqread dhcpleased 14315 28155 1 0 3 0 0x80 kqread dhcpleased 89386 303796 0 0 3 0x14000 0x200 bored smr 90021 465752 0 0 3 0x14000 0x200 pgzero zerothread 42634 225408 0 0 3 0x14000 0x200 aiodoned aiodoned 57567 52508 0 0 3 0x14000 0x200 syncer update 78773 298528 0 0 3 0x14000 0x200 cleaner cleaner 79101 461051 0 0 3 0x14000 0x200 reaper reaper 62762 199059 0 0 3 0x14000 0x200 pgdaemon pagedaemon 16046 383114 0 0 3 0x14000 0x200 bored viomb 49407 174516 0 0 3 0x14000 0x40000200 acpi0 acpi0 77587 478768 0 0 3 0x14000 0x40000200 idle1 67486 360854 0 0 3 0x14000 0x200 bored softnet1 *43005 53469 0 0 7 0x14000 0x200 softnet0 39687 264592 0 0 3 0x14000 0x200 bored systqmp 54651 437060 0 0 3 0x14000 0x200 bored systq 66140 52860 0 0 3 0x14000 0x200 tmoslp softclockmp 10906 3877 0 0 3 0x14000 0x40000200 tmoslp softclock 66008 324923 0 0 3 0x14000 0x40000200 idle0 1 404658 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffff6007a9e3d10) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_do_remove+0xa9 rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_do_remove+0xa9 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:441 [inline] #2 pmap_do_remove+0xa9 sys/arch/amd64/amd64/pmap.c:1834 #3 uvm_unmap_kill_entry_withlock+0x269 sys/uvm/uvm_map.c:1869 #4 uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] #4 uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 #5 exit1+0x71b sys/kern/kern_exit.c:260 #6 sys_exit+0x1a sys/kern/kern_exit.c:-1 #7 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #8 Xsyscall+0x128 Process 43812 (syz-executor) thread 0xffff800045fe7248 (443365) exclusive rrwlock inode r = 0 (0xfffff6007ce3c698) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffff6006de83550) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 43005 (softnet0) thread 0xffff800045ffe000 (53469) exclusive rwlock inet46 r = 0 (0xffff800010fdc030) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 in_pcbsolock+0xdb sys/netinet/in_pcb.c:631 #3 tcp_input_solocked+0xa9a sys/netinet/tcp_input.c:-1 #4 tcp_input_mlist+0x93 sys/netinet/tcp_input.c:-1 #5 if_input_process+0x526 sys/net/if.c:1086 #6 ifiq_process+0xcd sys/net/ifq.c:864 #7 taskq_thread+0x157 sys/kern/kern_task.c:446 #8 proc_trampoline+0x10 shared rwlock netlock r = 0 (0xffffffff838deed0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 if_input_process+0x1c9 sys/net/if.c:1061 #3 ifiq_process+0xcd sys/net/ifq.c:864 #4 taskq_thread+0x157 sys/kern/kern_task.c:446 #5 proc_trampoline+0x10 shared rwlock softnet0 r = 0 (0xffff80000002c078) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11051 12016K 12034K 166960K 12148 0 pcb 17 12K 12K 166960K 17 0 rtable 217 6K 7K 166960K 402 0 pf 29 16K 16K 166960K 33 0 ifaddr 38 6K 7K 166960K 48 0 ifgroup 46 2K 2K 166960K 54 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 37K 166960K 72 0 ioctlops 0 0K 2K 166960K 65 0 iov 0 0K 8K 166960K 8 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1287 81K 81K 166960K 1508 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 14 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 17 61K 121K 166960K 429 0 sigio 0 0K 0K 166960K 2 0 proc 58 99K 147K 166960K 566 0 subproc 63 3K 4K 166960K 216 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 55 0 in_multi 88 5K 6K 166960K 116 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 16 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 444 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 197 159K 184K 166960K 5211 0 UVM aobj 7 2K 2K 166960K 7 0 pinsyscall 38 76K 110K 166960K 1575 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 6 0 NDP 10 0K 2K 166960K 30 0 temp 36 9119K 9130K 166960K 4672 0 kqueue 14 22K 26K 166960K 59 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 112 0 109 3 0 3 3 0 8 2 rtentry 176 128 0 28 6 0 6 6 0 8 1 unpcb 144 373 0 358 6 0 6 6 0 8 5 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 90 0 84 1 0 1 1 0 8 0 arp 136 20 0 4 1 0 1 1 0 8 0 ipq 40 4 0 0 1 0 1 1 0 8 0 ipqe 40 4 0 0 1 0 1 1 0 8 0 inpcb 328 328 0 319 6 1 5 6 0 8 3 ip6q 80 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 152 33 0 11 1 0 1 1 0 8 0 kcovpl 48 24 0 17 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 567 0 156 30 0 30 30 0 8 1 art_table 40 568 0 156 5 0 5 5 0 8 0 art_node 32 128 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 72 11 0 1 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1882 0 398 93 0 93 93 0 8 0 ffsino 296 1882 0 398 115 0 115 115 0 8 0 nchpl 144 2376 0 669 64 0 64 64 0 8 0 vnodes 216 2107 0 0 118 0 118 118 0 8 0 namei 1024 7641 0 7640 3 1 2 2 0 8 1 percpumem 16 52 0 2 1 0 1 1 0 8 0 kstatmem 264 27 0 4 2 0 2 2 0 8 0 scxspl 216 7758 0 7757 3 2 1 2 1 8 0 plimitpl 152 99 0 77 2 0 2 2 0 8 1 sigapl 424 699 0 653 7 0 7 7 0 8 1 knotepl 120 320 0 0 10 0 10 10 0 8 0 kqueuepl 224 67 0 56 1 0 1 1 0 8 0 pipepl 344 190 0 162 3 0 3 3 0 8 0 fdescpl 528 683 0 654 3 0 3 3 0 8 0 filepl 160 3256 0 3063 14 0 14 14 0 8 4 lockfpl 104 91 0 89 1 0 1 1 0 8 0 lockfspl 48 35 0 33 1 0 1 1 0 8 0 sessionpl 144 51 0 36 1 0 1 1 0 8 0 pgrppl 48 81 0 59 1 0 1 1 0 8 0 ucredpl 104 410 0 392 1 0 1 1 0 8 0 zombiepl 144 654 0 653 1 0 1 1 0 8 0 processpl 1232 699 0 653 5 0 5 5 0 8 0 procpl 664 1084 0 1036 6 0 6 6 0 8 0 sockpl 752 816 0 789 16 5 11 16 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 121 0 0 16 0 16 16 0 8 0 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mextrefs 64 21 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 275 0 0 17 0 17 17 0 8 0 bufpl 272 2545 0 102 163 0 163 163 0 8 0 anonpl 32 7160 0 0 58 0 58 58 0 247 0 amapchunkpl 152 16591 0 16076 35 0 35 35 0 158 12 amappl16 200 2337 0 2318 17 3 14 14 0 8 11 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 424 0 423 1 0 1 1 0 8 0 amappl13 176 122 0 112 1 0 1 1 0 8 0 amappl12 168 926 0 897 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 118 0 107 1 0 1 1 0 8 0 amappl9 144 271 0 270 1 0 1 1 0 8 0 amappl8 136 96 0 95 1 0 1 1 0 8 0 amappl7 128 142 0 131 1 0 1 1 0 8 0 amappl6 120 155 0 154 1 0 1 1 0 8 0 amappl5 112 109 0 100 1 0 1 1 0 8 0 amappl4 104 283 0 267 1 0 1 1 0 8 0 amappl3 96 2744 0 2669 4 1 3 3 0 8 0 amappl2 88 836 0 764 2 0 2 2 0 8 0 amappl1 80 12320 0 11780 15 0 15 15 0 8 2 amappl 88 4424 0 4290 5 0 5 5 0 92 0 uvmvnodes 80 106 0 0 3 0 3 3 0 8 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 72 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 683 0 653 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 683 0 653 1 0 1 1 0 8 0 vmmpekpl 168 7945 0 7902 3 0 3 3 0 8 0 vmmpepl 168 53793 0 52086 97 2 95 95 0 357 6 vmsppl 488 682 0 653 7 1 6 6 0 8 0 rwobjpl 80 18461 0 17577 25 1 24 24 0 8 0 pdppl 4096 1373 0 1306 121 40 81 95 0 8 14 pvpl 32 13742 0 0 114 2 112 112 0 265 1 pmappl 256 682 0 653 4 1 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 462 0 45 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83931ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 uvm_pageactivate(fffff600085e3ea8) at uvm_pageactivate+0x199 _atomic_inc_int sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:139 [inline] uvm_pageactivate(fffff600085e3ea8) at uvm_pageactivate+0x199 sys/uvm/uvm_page.c:1273 uvm_pageunwire(fffff600085e3ea8) at uvm_pageunwire+0x125 _atomic_dec_int sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:-1 [inline] uvm_pageunwire(fffff600085e3ea8) at uvm_pageunwire+0x125 sys/uvm/uvm_page.c:1212 uvm_fault_unwire_locked(fffff6006d18f3f0,200000010000,200000800000) at uvm_fault_unwire_locked+0x33a sys/uvm/uvm_fault.c:1790 uvm_unmap_kill_entry_withlock(fffff6006d18f3f0,fffff6006d4928f8,0) at uvm_unmap_kill_entry_withlock+0x81 sys/uvm/uvm_map.c:1866 uvm_map_teardown(fffff6006d18f3f0) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(fffff6006d18f3f0) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 exit1(ffff800045feefa8,0,0,1) at exit1+0x71b sys/kern/kern_exit.c:260 sys_exit(ffff800045feefa8,ffff80002a32ef10,ffff80002a32ee60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a32ef10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a32ef10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77533c1296c0, count: 3 ddb{0}> trace x86_ipi_db(ffffffff83931ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 uvm_pageactivate(fffff600085e3ea8) at uvm_pageactivate+0x199 _atomic_inc_int sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:139 [inline] uvm_pageactivate(fffff600085e3ea8) at uvm_pageactivate+0x199 sys/uvm/uvm_page.c:1273 uvm_pageunwire(fffff600085e3ea8) at uvm_pageunwire+0x125 _atomic_dec_int sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:-1 [inline] uvm_pageunwire(fffff600085e3ea8) at uvm_pageunwire+0x125 sys/uvm/uvm_page.c:1212 uvm_fault_unwire_locked(fffff6006d18f3f0,200000010000,200000800000) at uvm_fault_unwire_locked+0x33a sys/uvm/uvm_fault.c:1790 uvm_unmap_kill_entry_withlock(fffff6006d18f3f0,fffff6006d4928f8,0) at uvm_unmap_kill_entry_withlock+0x81 sys/uvm/uvm_map.c:1866 uvm_map_teardown(fffff6006d18f3f0) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(fffff6006d18f3f0) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 exit1(ffff800045feefa8,0,0,1) at exit1+0x71b sys/kern/kern_exit.c:260 sys_exit(ffff800045feefa8,ffff80002a32ef10,ffff80002a32ee60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a32ef10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a32ef10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77533c1296c0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834e2603) at panic+0x1e5 sys/kern/subr_prf.c:198 unhandled_af(0) at unhandled_af+0x1a sys/net/if.c:-1 if_output_tso(ffff80000004e858,ffff80002a1d0430,ffff800000c43d50,fffff6006fc21b00,5dc) at if_output_tso+0x22b ip_output(fffff600691a4800,0,fffff6006fe01300,800,0,fffff6006fe01398,7709554eca7e7389) at ip_output+0x107f sys/netinet/ip_output.c:437 tcp_output(ffff8000015b5000) at tcp_output+0x36e3 sys/netinet/tcp_output.c:1070 tcp_input_solocked(ffff80002a1d0880,ffff80002a1d088c,0,2,ffff80002a1d0878) at tcp_input_solocked+0x5a40 sys/netinet/tcp_input.c:2041 tcp_input_mlist(ffffffff839eb410,2) at tcp_input_mlist+0x93 sys/netinet/tcp_input.c:-1 if_input_process(ffff80000004e858,ffff80002a1d0968,0) at if_input_process+0x526 sys/net/if.c:1086 ifiq_process(ffff80000004ed08) at ifiq_process+0xcd sys/net/ifq.c:864 taskq_thread(ffff80000002c000) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: 4 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834e2603) at panic+0x1e5 sys/kern/subr_prf.c:198 unhandled_af(0) at unhandled_af+0x1a sys/net/if.c:-1 if_output_tso(ffff80000004e858,ffff80002a1d0430,ffff800000c43d50,fffff6006fc21b00,5dc) at if_output_tso+0x22b ip_output(fffff600691a4800,0,fffff6006fe01300,800,0,fffff6006fe01398,7709554eca7e7389) at ip_output+0x107f sys/netinet/ip_output.c:437 tcp_output(ffff8000015b5000) at tcp_output+0x36e3 sys/netinet/tcp_output.c:1070 tcp_input_solocked(ffff80002a1d0880,ffff80002a1d088c,0,2,ffff80002a1d0878) at tcp_input_solocked+0x5a40 sys/netinet/tcp_input.c:2041 tcp_input_mlist(ffffffff839eb410,2) at tcp_input_mlist+0x93 sys/netinet/tcp_input.c:-1 if_input_process(ffff80000004e858,ffff80002a1d0968,0) at if_input_process+0x526 sys/net/if.c:1086 ifiq_process(ffff80000004ed08) at ifiq_process+0xcd sys/net/ifq.c:864 taskq_thread(ffff80000002c000) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: -11