lload: 1.69 cmd: uvm_fault(0xffffffff8253e768, 0xfffffd0000000018, 0, 1) -> e kernel: page fault trap, code=0 Stopped at tun_dev_read+0x138: movl 0x18(%rbx),%r12d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff8253e768, 0xfffffd0000000018, 0, 1) -> e tun_dev_read(5d01,ffff8000231893d8,10) at tun_dev_read+0x138 sys/net/if_tun.c:790 end trace frame: 0xffff800023189210, count: 0 ddb{0}> trace tun_dev_read(5d01,ffff8000231893d8,10) at tun_dev_read+0x138 sys/net/if_tun.c:790 spec_read(ffff800023189220) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806e78b0d8,ffff8000231893d8,10,fffffd807f7bf8a0) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd80671bdb60,ffff8000231893d8,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020ec7128,f0,ffff8000231893d8,0,ffff8000231894c0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ec7128,ffff800023189470,ffff8000231894c0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023189540) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023189540) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x832e280bbb0, count: -8 ddb{0}> show registers rdi 0 rsi 0x3da rbp 0xffff800023189160 rbx 0xfffffd0000000000 rdx 0x152 rcx 0xffff800000a0d580 rax 0xffffffff81d02223 tun_dev_read+0x133 r8 0x7f7fffffc000 r9 0x5 r10 0x2b71d85da2c86573 r11 0x263d76b9c751c46e r12 0 r13 0x3da r14 0xffff800000a28660 r15 0xffff8000231893d8 rip 0xffffffff81d02228 tun_dev_read+0x138 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800023189100 ss 0x10 tun_dev_read+0x138: movl 0x18(%rbx),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=344865 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020ec69d8,0xffffffff826498a0 process=0xffff800020e92ba8 user=0xffff800023184000, vmspace=0xfffffd807f000a10 estcpu=27, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 2276 464369 58159 0 7 0 syz-executor.1 * 2276 344865 58159 0 7 0x4000000 syz-executor.1 11490 353544 0 0 3 0x14200 bored sosplice 58159 486675 90287 0 3 0x82 nanosleep syz-executor.1 84016 470216 90287 0 2 0x2 syz-executor.0 90287 413949 80068 0 3 0x82 thrsleep syz-fuzzer 90287 516995 80068 0 3 0x4000082 nanosleep syz-fuzzer 90287 387935 80068 0 3 0x4000082 thrsleep syz-fuzzer 90287 470007 80068 0 3 0x4000082 nanosleep syz-fuzzer 90287 134648 80068 0 3 0x4000082 thrsleep syz-fuzzer 90287 435155 80068 0 3 0x4000082 thrsleep syz-fuzzer 90287 216765 80068 0 3 0x4000082 thrsleep syz-fuzzer 90287 448318 80068 0 3 0x4000082 thrsleep syz-fuzzer 90287 203563 80068 0 3 0x4000082 kqread syz-fuzzer 90287 86751 80068 0 3 0x4000082 thrsleep syz-fuzzer 80068 181947 90491 0 3 0x10008a pause ksh 90491 81363 2679 0 3 0x92 select sshd 18506 35860 1 0 3 0x100083 ttyin getty 2679 9686 1 0 3 0x80 select sshd 31527 278083 18758 74 3 0x100092 bpf pflogd 18758 285452 1 0 3 0x80 netio pflogd 24960 73975 95155 73 3 0x100090 kqread syslogd 95155 107037 1 0 3 0x100082 netio syslogd 43220 18665 1 77 3 0x100090 poll dhclient 75358 232764 1 0 3 0x80 poll dhclient 87951 466512 0 0 3 0x14200 bored smr 86653 2164 0 0 3 0x14200 pgzero zerothread 72304 406535 0 0 3 0x14200 aiodoned aiodoned 31081 484101 0 0 3 0x14200 syncer update 22748 371792 0 0 3 0x14200 cleaner cleaner 25202 403571 0 0 3 0x14200 reaper reaper 65566 86116 0 0 3 0x14200 pgdaemon pagedaemon 69415 502217 0 0 3 0x14200 bored crynlk 10204 430622 0 0 3 0x14200 bored crypto 88889 282904 0 0 3 0x40014200 acpi0 acpi0 28591 60287 0 0 3 0x40014200 idle1 4832 446062 0 0 3 0x14200 bored softnet 33216 115428 0 0 3 0x14200 bored systqmp 55946 55829 0 0 3 0x14200 bored systq 61105 21282 0 0 2 0x40014200 softclock 91080 227646 0 0 3 0x40014200 idle0 1 249548 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 2276 (syz-executor.1) thread 0xffff800020ec7128 (344865) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82681848) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 vn_read+0x45 sys/kern/vfs_vnops.c:357 #2 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #3 sys_read+0x83 sys/kern/sys_generic.c:157 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 Process 84016 (syz-executor.0) thread 0xffff800020e6d5f8 (470216) exclusive rrwlock inode r = 0 (0xfffffd807db38d60) #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+0x1cf sys/ufs/ffs/ffs_alloc.c:392 #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 (0xfffffd806b35c5e8) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9515 6421K 7247K 78643K 11348 0 pcb 13 8K 8K 78643K 97 0 rtable 111 3K 3K 78643K 298 0 ifaddr 73 15K 15K 78643K 128 0 counters 43 33K 34K 78643K 61 0 ioctlops 0 0K 4K 78643K 1488 0 iov 0 0K 16K 78643K 38 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1432 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 34 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1823 197K 290K 78643K 12980 0 file desc 5 13K 25K 78643K 339 0 sigio 0 0K 0K 78643K 3 0 proc 61 63K 83K 78643K 486 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 132 0 in_multi 59 3K 3K 78643K 110 0 ether_multi 1 0K 0K 78643K 17 0 mrt 1 0K 0K 78643K 8 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 230 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 123 38K 63K 78643K 2083 0 UVM aobj 8 4K 4K 78643K 10 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 81 0 NDP 11 0K 0K 78643K 24 0 temp 110 3042K 3106K 78643K 4181 0 kqueue 3 4K 16K 78643K 37 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 8 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 37 0 35 1 0 1 1 0 8 0 rtentry 112 53 0 6 2 0 2 2 0 8 0 unpcb 120 147 0 137 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 203 0 203 1 1 0 1 0 8 0 tcpcb 544 358 0 354 1 0 1 1 0 8 0 inpcb 280 870 0 863 2 0 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 7 0 0 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 pfstitem 24 35 0 8 1 0 1 1 0 8 0 pfstkey 112 35 0 8 1 0 1 1 0 8 0 pfstate 328 35 0 8 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 209 0 2 13 0 13 13 0 8 0 art_table 32 211 0 2 2 0 2 2 0 8 0 art_node 16 52 0 9 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 21 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 26 0 16 1 0 1 1 0 8 0 shmpl 112 8 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1876 0 473 89 0 89 89 0 8 0 ffsino 272 1876 0 473 95 0 95 95 0 8 0 nchpl 144 2530 0 925 60 0 60 60 0 8 0 uvmvnodes 72 2078 0 0 38 0 38 38 0 8 0 vnodes 208 2078 0 0 110 0 110 110 0 8 0 namei 1024 6883 0 6882 1 0 1 1 0 8 0 percpumem 16 41 0 9 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 560 3 0 2 2 1 1 1 0 8 0 scxspl 192 7005 0 7005 8 7 1 7 0 8 1 plimitpl 152 41 0 33 1 0 1 1 0 8 0 sigapl 424 555 0 523 4 0 4 4 0 8 0 futexpl 56 5528 0 5528 1 0 1 1 0 8 1 knotepl 112 114 0 95 1 0 1 1 0 8 0 kqueuepl 144 76 0 74 1 0 1 1 0 8 0 pipelkpl 48 125 0 115 1 0 1 1 0 8 0 pipepl 120 250 0 231 1 0 1 1 0 8 0 fdescpl 496 539 0 523 3 0 3 3 0 8 0 filepl 152 3362 0 3262 6 1 5 6 0 8 1 lockfpl 104 76 0 75 1 0 1 1 0 8 0 lockfspl 48 25 0 24 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 259 0 250 1 0 1 1 0 8 0 zombiepl 144 523 0 523 1 0 1 1 0 8 1 processpl 984 555 0 523 5 0 5 5 0 8 0 procpl 624 1301 0 1259 4 0 4 4 0 8 0 sosppl 128 7 0 7 1 1 0 1 0 8 0 sockpl 400 1056 0 1037 3 0 3 3 0 8 1 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 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 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 161 0 0 20 0 20 20 0 8 0 mtagpl 80 63 0 0 2 0 2 2 0 8 0 mbufpl 256 311 0 0 18 0 18 18 0 8 0 bufpl 280 3935 0 133 272 0 272 272 0 8 0 anonpl 16 63280 0 48700 73 1 72 72 0 124 13 amapchunkpl 152 3496 0 3358 24 4 20 20 0 158 14 amappl16 192 2545 0 1761 49 4 45 49 0 8 5 amappl15 184 2 0 2 2 2 0 1 0 8 0 amappl14 176 23 0 19 1 0 1 1 0 8 0 amappl13 168 27 0 25 1 0 1 1 0 8 0 amappl12 160 178 0 172 1 0 1 1 0 8 0 amappl11 152 206 0 189 1 0 1 1 0 8 0 amappl10 144 21 0 14 1 0 1 1 0 8 0 amappl9 136 388 0 387 1 0 1 1 0 8 0 amappl8 128 353 0 314 2 0 2 2 0 8 0 amappl7 120 119 0 106 1 0 1 1 0 8 0 amappl6 112 28 0 24 1 0 1 1 0 8 0 amappl5 104 596 0 579 1 0 1 1 0 8 0 amappl4 96 491 0 463 1 0 1 1 0 8 0 amappl3 88 127 0 121 1 0 1 1 0 8 0 amappl2 80 3370 0 3302 2 0 2 2 0 8 0 amappl1 72 21949 0 21500 23 13 10 18 0 8 0 amappl 80 1553 0 1508 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 9 0 2 1 0 1 1 0 8 0 uaddrrnd 24 542 0 525 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 542 0 525 1 0 1 1 0 8 0 vmmpekpl 168 8085 0 8055 2 0 2 2 0 8 0 vmmpepl 168 72178 0 70229 111 13 98 104 0 357 13 vmsppl 368 541 0 525 2 0 2 2 0 8 0 pdppl 4096 1092 0 1051 6 0 6 6 0 8 0 pvpl 32 204281 0 186580 174 0 174 174 0 265 31 pmappl 232 541 0 525 3 1 2 2 0 8 1 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 265 0 3 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace tun_dev_read(5d01,ffff8000231893d8,10) at tun_dev_read+0x138 sys/net/if_tun.c:790 spec_read(ffff800023189220) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806e78b0d8,ffff8000231893d8,10,fffffd807f7bf8a0) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd80671bdb60,ffff8000231893d8,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020ec7128,f0,ffff8000231893d8,0,ffff8000231894c0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ec7128,ffff800023189470,ffff8000231894c0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023189540) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023189540) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x832e280bbb0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020e00ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:86 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff2fc0, count: -5