login: € € ý./file0€ uvm_fault(0xffffffff82799320, 0xfffffd0000000018, 0, 1) -> e kernel: page fault trap, code=0 Stopped at tun_dev_read+0x138: movl 0x18(%rbx),%r12d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff82799320, 0xfffffd0000000018, 0, 1) -> e tun_dev_read(5d01,ffff800023f14f48,10) at tun_dev_read+0x138 sys/net/if_tun.c:790 end trace frame: 0xffff800023f14d80, count: 0 ddb{1}> trace tun_dev_read(5d01,ffff800023f14f48,10) at tun_dev_read+0x138 sys/net/if_tun.c:790 spec_read(ffff800023f14d90) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd807eb2e1a8,ffff800023f14f48,10,fffffd807f7bf7e0) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd80674b9b68,ffff800023f14f48,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e084f8,f0,ffff800023f14f48,0,ffff800023f15030) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e084f8,ffff800023f14fe0,ffff800023f15030) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023f150b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f150b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa3545b15d80, count: -8 ddb{1}> show registers rdi 0 rsi 0x3da rbp 0xffff800023f14cd0 rbx 0xfffffd0000000000 rdx 0x152 rcx 0xffff800000ad8780 rax 0xffffffff81d825b3 tun_dev_read+0x133 r8 0x7f7fffffc000 r9 0x5 r10 0xa0b8f81e6d043227 r11 0x3d4d1f2a97cb4bc r12 0 r13 0x3da r14 0xffff800000aeee60 r15 0xffff800023f14f48 rip 0xffffffff81d825b8 tun_dev_read+0x138 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800023f14c70 ss 0x10 tun_dev_read+0x138: movl 0x18(%rbx),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=147502 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=72, nice=20 forw=0xffffffffffffffff, list=0xffff800020e08eb8,0xffffffff828be660 process=0xffff800023f86f98 user=0xffff800023f10000, vmspace=0xfffffd80797c58b0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 71509 34106 73762 0 2 0 syz-executor.1 *71509 147502 73762 0 7 0x4000000 syz-executor.1 45198 276420 0 0 3 0x14280 nfsidl nfsio 29010 173669 0 0 3 0x14280 nfsidl nfsio 24846 94540 0 0 3 0x14280 nfsidl nfsio 14740 60476 0 0 3 0x14280 nfsidl nfsio 41332 362062 0 0 3 0x14280 nfsidl nfsio 84855 499225 0 0 3 0x14280 nfsidl nfsio 32600 138564 0 0 3 0x14280 nfsidl nfsio 35007 439137 0 0 3 0x14280 nfsidl nfsio 634 4529 0 0 3 0x14280 nfsidl nfsio 25310 251717 0 0 3 0x14280 nfsidl nfsio 81649 200535 0 0 3 0x14280 nfsidl nfsio 42304 377945 0 0 3 0x14280 nfsidl nfsio 78700 124594 0 0 3 0x14280 nfsidl nfsio 27985 486863 0 0 3 0x14280 nfsidl nfsio 18642 329044 0 0 3 0x14280 nfsidl nfsio 99654 220638 0 0 3 0x14280 nfsidl nfsio 73770 186937 0 0 3 0x14280 nfsidl nfsio 10223 445460 0 0 3 0x14280 nfsidl nfsio 28433 342736 0 0 3 0x14280 nfsidl nfsio 21105 409786 0 0 3 0x14280 nfsidl nfsio 44569 315173 0 0 3 0x14200 bored sosplice 73762 390455 99391 0 3 0x82 nanosleep syz-executor.1 94708 94193 99391 0 3 0x82 nanosleep syz-executor.0 99391 372113 64861 0 3 0x82 thrsleep syz-fuzzer 99391 90626 64861 0 3 0x4000082 thrsleep syz-fuzzer 99391 58610 64861 0 3 0x4000082 thrsleep syz-fuzzer 99391 254779 64861 0 3 0x4000082 thrsleep syz-fuzzer 99391 316951 64861 0 3 0x4000082 thrsleep syz-fuzzer 99391 160493 64861 0 3 0x4000082 kqread syz-fuzzer 99391 276096 64861 0 3 0x4000082 thrsleep syz-fuzzer 99391 248641 64861 0 3 0x4000082 thrsleep syz-fuzzer 99391 285491 64861 0 3 0x4000082 thrsleep syz-fuzzer 99391 24408 64861 0 3 0x4000082 thrsleep syz-fuzzer 64861 173694 13648 0 3 0x10008a pause ksh 13648 105242 57489 0 3 0x92 select sshd 3139 286964 1 0 3 0x100083 ttyopn getty 57489 393596 1 0 3 0x80 select sshd 28485 476861 57839 74 3 0x100092 bpf pflogd 57839 394540 1 0 3 0x80 netio pflogd 29931 90725 61150 73 3 0x100090 kqread syslogd 61150 367278 1 0 3 0x100082 netio syslogd 75129 114100 1 77 3 0x100090 poll dhclient 14858 499270 1 0 3 0x80 poll dhclient 72937 519429 0 0 3 0x14200 bored smr 18514 252418 0 0 2 0x14200 zerothread 72375 111602 0 0 3 0x14200 aiodoned aiodoned 4653 206986 0 0 3 0x14200 syncer update 76655 212315 0 0 3 0x14200 cleaner cleaner 84387 473861 0 0 7 0x14200 reaper 49235 455403 0 0 3 0x14200 pgdaemon pagedaemon 67332 329921 0 0 3 0x14200 bored crynlk 96106 312893 0 0 3 0x14200 bored crypto 78828 320326 0 0 3 0x40014200 acpi0 acpi0 28108 396812 0 0 3 0x40014200 idle1 47653 175917 0 0 3 0x14200 bored softnet 22098 223655 0 0 3 0x14200 bored systqmp 26024 14778 0 0 3 0x14200 bored systq 83281 43181 0 0 3 0x40014200 bored softclock 82120 438381 0 0 3 0x40014200 idle0 1 505171 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 71509 (syz-executor.1) thread 0xffff800020e084f8 (147502) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828cdac0) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9507 6411K 7123K 78643K 11358 0 pcb 13 8K 8K 78643K 100 0 rtable 112 5K 5K 78643K 319 0 ifaddr 82 17K 18K 78643K 119 0 counters 43 33K 34K 78643K 53 0 ioctlops 0 0K 4K 78643K 1517 0 iov 0 0K 24K 78643K 51 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1443 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 42 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 380 0 proc 61 63K 83K 78643K 456 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 38 0 in_multi 89 4K 4K 78643K 173 0 ether_multi 1 0K 0K 78643K 14 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 231 0 pfkey data 0 0K 1K 78643K 2 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 71K 71K 78643K 2229 0 UVM aobj 10 2K 2K 78643K 16 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 67 0 NDP 10 0K 0K 78643K 28 0 temp 91 3846K 3910K 78643K 8127 0 kqueue 3 4K 8K 78643K 17 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 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 36 0 34 1 0 1 1 0 8 0 rtentry 112 69 0 26 2 0 2 2 0 8 0 unpcb 120 479 0 469 1 0 1 1 0 8 0 syncache 264 10 0 10 3 2 1 1 0 8 1 sackhl 24 1 0 1 1 0 1 1 0 8 1 tcpqe 32 150 0 150 3 2 1 1 0 8 1 tcpcb 544 179 0 175 1 0 1 1 0 8 0 inpcb 296 627 0 618 4 2 2 2 0 8 0 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 19 0 13 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1128 3 0 3 2 2 0 1 0 8 0 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 1 0 1 1 1 0 1 0 482 0 pffrnode 88 1 0 1 1 1 0 1 0 8 0 pffrent 40 2 0 2 1 1 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 4 0 3 1 0 1 1 0 8 0 pftag 88 4 0 4 1 1 0 1 0 8 0 pfstitem 24 32 0 13 1 0 1 1 0 8 0 pfstkey 112 32 0 13 1 0 1 1 0 8 0 pfstate 328 30 0 13 3 0 3 3 0 8 0 pfrule 1360 28 0 19 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 232 0 50 14 1 13 14 0 8 0 art_table 32 233 0 50 2 0 2 2 0 8 0 art_node 16 66 0 29 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 36 0 26 1 0 1 1 0 8 0 shmpl 112 14 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1904 0 497 89 0 89 89 0 8 0 ffsino 272 1904 0 497 96 1 95 95 0 8 0 nchpl 144 2674 0 1060 60 0 60 60 0 8 0 uvmvnodes 72 2113 0 0 39 0 39 39 0 8 0 vnodes 208 2113 0 0 112 0 112 112 0 8 0 namei 1024 8069 0 8069 2 1 1 1 0 8 1 percpumem 16 37 0 5 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 6 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 1 1 0 1 1 0 8 1 scxspl 192 8103 0 8103 11 10 1 7 0 8 1 plimitpl 152 29 0 21 1 0 1 1 0 8 0 sigapl 424 616 0 564 6 0 6 6 0 8 0 futexpl 56 6265 0 6265 1 0 1 1 0 8 1 knotepl 112 81 0 62 1 0 1 1 0 8 0 kqueuepl 144 60 0 58 1 0 1 1 0 8 0 pipelkpl 48 158 0 148 1 0 1 1 0 8 0 pipepl 120 316 0 297 1 0 1 1 0 8 0 fdescpl 496 580 0 564 3 0 3 3 0 8 0 filepl 152 4338 0 4237 6 1 5 5 0 8 1 lockfpl 104 80 0 79 1 0 1 1 0 8 0 lockfspl 48 29 0 28 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 931 0 922 1 0 1 1 0 8 0 zombiepl 144 564 0 563 2 1 1 1 0 8 0 processpl 984 616 0 563 8 1 7 7 0 8 0 procpl 624 1469 0 1406 6 0 6 6 0 8 1 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 400 1144 0 1124 9 5 4 4 0 8 2 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 158 0 0 19 0 19 19 0 8 0 mtagpl 96 77 0 0 2 0 2 2 0 8 0 mbufpl 256 368 0 0 21 0 21 21 0 8 0 bufpl 280 4211 0 135 292 0 292 292 0 8 0 anonpl 16 74458 0 57628 99 16 83 83 0 124 13 amapchunkpl 152 3715 0 3561 21 14 7 20 0 158 0 amappl16 192 3154 0 2212 71 16 55 59 0 8 7 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 25 0 20 1 0 1 1 0 8 0 amappl13 168 215 0 210 1 0 1 1 0 8 0 amappl12 160 17 0 14 1 0 1 1 0 8 0 amappl11 152 216 0 198 1 0 1 1 0 8 0 amappl10 144 25 0 19 1 0 1 1 0 8 0 amappl9 136 388 0 387 1 0 1 1 0 8 0 amappl8 128 342 0 315 1 0 1 1 0 8 0 amappl7 120 118 0 107 1 0 1 1 0 8 0 amappl6 112 183 0 179 1 0 1 1 0 8 0 amappl5 104 478 0 461 1 0 1 1 0 8 0 amappl4 96 682 0 649 1 0 1 1 0 8 0 amappl3 88 113 0 108 1 0 1 1 0 8 0 amappl2 80 3701 0 3620 2 0 2 2 0 8 0 amappl1 72 22502 0 22045 23 13 10 18 0 8 0 amappl 80 1700 0 1652 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 15 0 6 1 0 1 1 0 8 0 uaddrrnd 24 586 0 564 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 586 0 564 1 0 1 1 0 8 0 vmmpekpl 168 8625 0 8587 2 0 2 2 0 8 0 vmmpepl 168 77732 0 75551 141 33 108 114 0 357 11 vmsppl 368 585 0 563 3 0 3 3 0 8 0 pdppl 4096 1179 0 1132 7 1 6 6 0 8 0 pvpl 32 224166 0 204211 220 23 197 198 0 265 32 pmappl 232 585 0 563 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 279 0 12 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(ffffffff826f4ff0) 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(ffffffff828cd8b8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828cd8b8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f __sanitizer_cov_trace_cmp4(a2de6,a2de7) at __sanitizer_cov_trace_cmp4+0x3d kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_cmp4(a2de6,a2de7) at __sanitizer_cov_trace_cmp4+0x3d trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(a2de6,a2de7) at __sanitizer_cov_trace_cmp4+0x3d sys/dev/kcov.c:135 __mp_lock(ffffffff828cd8b8) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828cd8b8) at __mp_lock+0x139 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800020dcfe10,1) at uvm_unmap_detach+0xe7 sys/uvm/uvm_map.c:1581 uvm_map_teardown(fffffd80797c5e70) at uvm_map_teardown+0x25c sys/uvm/uvm_map.c:2757 uvmspace_free(fffffd80797c5e70) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff800023f867e8) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff800020d889c0) at reaper+0x189 sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at tun_dev_read+0x138: movl 0x18(%rbx),%r12d ddb{1}> trace tun_dev_read(5d01,ffff800023f14f48,10) at tun_dev_read+0x138 sys/net/if_tun.c:790 spec_read(ffff800023f14d90) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd807eb2e1a8,ffff800023f14f48,10,fffffd807f7bf7e0) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd80674b9b68,ffff800023f14f48,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e084f8,f0,ffff800023f14f48,0,ffff800023f15030) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e084f8,ffff800023f14fe0,ffff800023f15030) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023f150b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f150b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa3545b15d80, count: -8