uvm_fault(0xfffffd807f000cf0, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807f000cf0, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000af1800,ffff800000b10700,ffff800020eb4800) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff800020eb46b0, count: 0 ddb{1}> trace ifa_update_broadaddr(ffff800000af1800,ffff800000b10700,ffff800020eb4800) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff800020eb47f0,ffff800000af1800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd80643eb668,80206913,ffff800020eb47f0,ffff800020ea2d60) at ifioctl+0xe70 sys/net/if.c:2282 soo_ioctl(fffffd80680b8738,80206913,ffff800020eb47f0,ffff800020ea2d60) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020ea2d60,ffff800020eb4908,ffff800020eb4950) at sys_ioctl+0x4a5 syscall(ffff800020eb49d0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020eb49d0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68851480560, count: -7 ddb{1}> show registers rdi 0xffffffff8204cecb ifa_update_broadaddr+0x1b rsi 0x133 rbp 0xffff800020eb4610 rbx 0x10 rdx 0x134 rcx 0xffff800021efd000 rax 0xffff800021efd000 r8 0xffffffff81f09997 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x3327e67c88911087 r12 0xffff800020eb4800 r13 0 r14 0xffff800020eb4800 r15 0 rip 0xffffffff8204cecf ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020eb45d0 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=403534 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ea2130,0xffffffff828fee10 process=0xffff800023f72bd0 user=0xffff800020eaf000, vmspace=0xfffffd807f000cf0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 10463 315246 71379 0 2 0 syz-executor.1 *10463 403534 71379 0 7 0x4000000 syz-executor.1 36761 374317 83617 0 3 0x2 biowait syz-executor.0 75076 410872 0 0 3 0x14280 nfsidl nfsio 67454 299758 0 0 3 0x14280 nfsidl nfsio 4038 91612 0 0 3 0x14280 nfsidl nfsio 10937 202802 0 0 3 0x14280 nfsidl nfsio 359 33441 0 0 3 0x14280 nfsidl nfsio 42639 339478 0 0 3 0x14280 nfsidl nfsio 75249 177072 0 0 3 0x14280 nfsidl nfsio 6800 244439 0 0 3 0x14280 nfsidl nfsio 33013 347435 0 0 3 0x14280 nfsidl nfsio 60032 261173 0 0 3 0x14280 nfsidl nfsio 1006 143250 0 0 3 0x14280 nfsidl nfsio 92042 507534 0 0 3 0x14280 nfsidl nfsio 43398 270475 0 0 3 0x14280 nfsidl nfsio 48908 140316 0 0 3 0x14280 nfsidl nfsio 63647 92539 0 0 3 0x14280 nfsidl nfsio 29478 508263 0 0 3 0x14280 nfsidl nfsio 39247 277848 0 0 3 0x14280 nfsidl nfsio 84301 496543 0 0 3 0x14280 nfsidl nfsio 46742 175196 0 0 3 0x14280 nfsidl nfsio 93835 499922 0 0 3 0x14280 nfsidl nfsio 64909 428253 0 0 3 0x14200 bored sosplice 71379 401027 83617 0 3 0x82 nanosleep syz-executor.1 83617 164931 599 0 3 0x82 thrsleep syz-fuzzer 83617 469199 599 0 3 0x4000082 nanosleep syz-fuzzer 83617 351816 599 0 3 0x4000082 thrsleep syz-fuzzer 83617 339251 599 0 7 0x4000002 syz-fuzzer 83617 219614 599 0 3 0x4000082 thrsleep syz-fuzzer 83617 142730 599 0 3 0x4000082 thrsleep syz-fuzzer 83617 174848 599 0 3 0x4000082 thrsleep syz-fuzzer 83617 388919 599 0 3 0x4000082 thrsleep syz-fuzzer 83617 437628 599 0 3 0x4000082 nanosleep syz-fuzzer 83617 436142 599 0 3 0x4000082 thrsleep syz-fuzzer 599 239251 94916 0 3 0x10008a pause ksh 94916 510235 10005 0 3 0x92 select sshd 17521 204925 1 0 3 0x100083 ttyin getty 10005 33621 1 0 3 0x80 select sshd 76287 306523 23575 74 3 0x100092 bpf pflogd 23575 224888 1 0 3 0x80 netio pflogd 73113 430169 50718 73 3 0x100090 kqread syslogd 50718 307806 1 0 3 0x100082 netio syslogd 48147 65327 1 77 3 0x100090 poll dhclient 38851 96291 1 0 3 0x80 poll dhclient 30835 282173 0 0 3 0x14200 bored smr 39907 415935 0 0 2 0x14200 zerothread 27062 75363 0 0 3 0x14200 aiodoned aiodoned 57111 368632 0 0 3 0x14200 syncer update 92302 481589 0 0 3 0x14200 cleaner cleaner 86890 78884 0 0 3 0x14200 reaper reaper 78136 454293 0 0 3 0x14200 pgdaemon pagedaemon 37668 165802 0 0 3 0x14200 bored crynlk 52875 194642 0 0 3 0x14200 bored crypto 7567 249822 0 0 3 0x40014200 acpi0 acpi0 37917 345976 0 0 3 0x40014200 idle1 84042 392722 0 0 3 0x14200 bored softnet 22643 293820 0 0 3 0x14200 bored systqmp 61634 432649 0 0 3 0x14200 bored systq 90843 256397 0 0 3 0x40014200 bored softclock 36636 166708 0 0 3 0x40014200 idle0 1 367692 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 10463 (syz-executor.1) thread 0xffff800020ea2d60 (403534) exclusive rwlock netlock r = 0 (0xffffffff8278f3d8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 in_ioctl+0x1f5 #2 ifioctl+0xe70 sys/net/if.c:2282 #3 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #4 sys_ioctl+0x4a5 #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 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828b55a0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 soo_ioctl+0x26a sys/kern/sys_socket.c:138 #2 sys_ioctl+0x4a5 #3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #4 Xsyscall+0x128 Process 36761 (syz-executor.0) thread 0xffff800020dddd48 (374317) exclusive rrwlock inode r = 0 (0xfffffd806e3416f8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358 #5 ffs_inode_alloc+0x1e2 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:450 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b1f9918) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3036 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9492 6405K 14851K 78643K 10907 0 pcb 13 8K 8K 78643K 62 0 rtable 96 4K 5K 78643K 326 0 ifaddr 60 13K 13K 78643K 108 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 55 0 ioctlops 0 0K 4K 78643K 1560 0 iov 0 0K 16K 78643K 32 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1400 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 618 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 855 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 1346 0 sigio 0 0K 0K 78643K 8 0 proc 61 63K 83K 78643K 515 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 19 0 in_multi 46 2K 2K 78643K 84 0 ether_multi 1 0K 0K 78643K 6 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 237 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 88K 88K 78643K 4880 0 UVM aobj 132 8K 8K 78643K 139 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 31 0 NDP 10 0K 0K 78643K 23 0 temp 94 3866K 3934K 78643K 9355 0 kqueue 3 4K 8K 78643K 5 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 9 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 30 0 28 1 0 1 1 0 8 0 rtentry 112 72 0 35 2 0 2 2 0 8 0 unpcb 120 709 0 699 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpcb 544 101 0 96 1 0 1 1 0 8 0 inpcb 296 2151 0 2142 9 8 1 2 0 8 0 rttmr 72 2 0 2 1 1 0 1 0 8 0 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 14 0 7 1 0 1 1 0 8 0 pffrag 232 4 0 4 3 3 0 1 0 482 0 pffrnode 88 4 0 4 3 3 0 1 0 8 0 pffrent 40 96 0 96 3 3 0 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 3 0 1 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 264 2 0 0 1 0 1 1 0 8 0 pfstitem 24 21 0 19 1 0 1 1 0 8 0 pfstkey 112 21 0 19 1 0 1 1 0 8 0 pfstate 328 21 0 19 2 1 1 2 0 8 0 pfrule 1360 28 0 22 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 287 0 133 13 1 12 13 0 8 2 art_table 32 288 0 133 2 0 2 2 0 8 0 art_node 16 71 0 41 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 2 1 0 1 1 0 8 0 semapl 112 843 0 833 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2865 0 1461 91 2 89 89 0 8 0 ffsino 272 2865 0 1461 94 0 94 94 0 8 0 nchpl 144 4838 0 3243 60 0 60 60 0 8 0 uvmvnodes 72 3008 0 0 55 0 55 55 0 8 0 vnodes 208 3008 0 0 159 0 159 159 0 8 0 namei 1024 13124 0 13123 4 3 1 1 0 8 0 percpumem 16 38 0 6 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 6 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 0 1 1 0 8 1 scxspl 192 13729 0 13728 13 12 1 7 0 8 0 plimitpl 152 42 0 34 1 0 1 1 0 8 0 sigapl 424 1579 0 1527 6 0 6 6 0 8 0 futexpl 56 15164 0 15164 4 3 1 1 0 8 1 knotepl 112 77 0 58 1 0 1 1 0 8 0 kqueuepl 144 14 0 12 1 0 1 1 0 8 0 pipepl 304 145 0 135 3 2 1 2 0 8 0 fdescpl 496 1543 0 1527 3 0 3 3 0 8 0 filepl 152 8019 0 7917 5 0 5 5 0 8 1 lockfpl 104 76 0 75 1 0 1 1 0 8 0 lockfspl 48 29 0 28 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 19 0 8 1 0 1 1 0 8 0 ucredpl 96 1512 0 1503 1 0 1 1 0 8 0 zombiepl 144 1527 0 1527 1 0 1 1 0 8 1 processpl 992 1579 0 1527 7 0 7 7 0 8 0 procpl 624 4074 0 4012 8 2 6 6 0 8 1 sosppl 128 1253 0 1253 3 3 0 1 0 8 0 sockpl 400 2890 0 2869 6 3 3 3 0 8 0 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 199 0 0 20 1 19 20 0 8 0 mtagpl 96 23 0 0 1 0 1 1 0 8 0 mbufpl 256 385 0 0 17 1 16 17 0 8 0 bufpl 280 5210 0 136 363 0 363 363 0 8 0 anonpl 16 118809 0 106490 68 1 67 67 0 124 0 amapchunkpl 152 7554 0 7412 8 1 7 8 0 158 0 amappl16 192 6471 0 5578 50 4 46 46 0 8 1 amappl15 184 593 0 590 1 0 1 1 0 8 0 amappl14 176 36 0 30 1 0 1 1 0 8 0 amappl13 168 35 0 32 1 0 1 1 0 8 0 amappl12 160 14 0 11 1 0 1 1 0 8 0 amappl11 152 62 0 46 1 0 1 1 0 8 0 amappl10 144 17 0 14 1 0 1 1 0 8 0 amappl9 136 1088 0 1087 1 0 1 1 0 8 0 amappl8 128 1092 0 1056 2 0 2 2 0 8 0 amappl7 120 126 0 112 1 0 1 1 0 8 0 amappl6 112 30 0 25 1 0 1 1 0 8 0 amappl5 104 1439 0 1422 1 0 1 1 0 8 0 amappl4 96 515 0 482 1 0 1 1 0 8 0 amappl3 88 121 0 116 1 0 1 1 0 8 0 amappl2 80 11931 0 11860 2 0 2 2 0 8 0 amappl1 72 40204 0 39762 23 13 10 18 0 8 0 amappl 80 4327 0 4278 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 64 138 0 7 3 0 3 3 0 8 0 uaddrrnd 24 1549 0 1528 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1549 0 1528 1 0 1 1 0 8 0 vmmpekpl 168 13559 0 13512 3 0 3 3 0 8 0 vmmpepl 168 189035 0 186950 159 33 126 126 0 357 30 vmsppl 368 1548 0 1528 2 0 2 2 0 8 0 pdppl 4096 3105 0 3061 6 0 6 6 0 8 0 pvpl 32 371523 0 355942 196 32 164 166 0 265 4 pmappl 232 1548 0 1528 4 2 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 275 0 16 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(ffffffff82759ff0) 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(ffffffff828b5398) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828b5398) at __mp_lock+0x127 sys/kern/kern_lock.c:147 intr_handler(ffff800020e8a5e0,ffff80000004a400) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x19f __sanitizer_cov_trace_cmp4(f5403,f5404) at __sanitizer_cov_trace_cmp4+0x5d kd_curproc sys/dev/kcov.c:416 [inline] __sanitizer_cov_trace_cmp4(f5403,f5404) at __sanitizer_cov_trace_cmp4+0x5d trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(f5403,f5404) at __sanitizer_cov_trace_cmp4+0x5d sys/dev/kcov.c:135 __mp_lock(ffffffff828b5398) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828b5398) at __mp_lock+0x139 sys/kern/kern_lock.c:147 pageflttrap(ffff800020e8a7f0,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800020e8a7f0) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0xc002c5f210, count: -11 ddb{0}> machine ddbcpu 1 Stopped at ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> trace ifa_update_broadaddr(ffff800000af1800,ffff800000b10700,ffff800020eb4800) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff800020eb47f0,ffff800000af1800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd80643eb668,80206913,ffff800020eb47f0,ffff800020ea2d60) at ifioctl+0xe70 sys/net/if.c:2282 soo_ioctl(fffffd80680b8738,80206913,ffff800020eb47f0,ffff800020ea2d60) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020ea2d60,ffff800020eb4908,ffff800020eb4950) at sys_ioctl+0x4a5 syscall(ffff800020eb49d0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020eb49d0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68851480560, count: -7