login: kernel: protection fault trap, code=0 Stopped at ktrops+0x4a: movq 0x8(%rbx),%r14 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace ktrops(ffff800021211ce0,dead4110dead4110,0,bf787090,fffffd806e227970,fffffd807f7d87e0) at ktrops+0x4a ktrcanset sys/kern/kern_ktrace.c:702 [inline] ktrops(ffff800021211ce0,dead4110dead4110,0,bf787090,fffffd806e227970,fffffd807f7d87e0) at ktrops+0x4a sys/kern/kern_ktrace.c:547 doktrace(fffffd806e227970,4,3f787090,0,ffff800021211ce0) at doktrace+0x514 ktrsetchildren sys/kern/kern_ktrace.c:572 [inline] doktrace(fffffd806e227970,4,3f787090,0,ffff800021211ce0) at doktrace+0x514 sys/kern/kern_ktrace.c:494 sys_ktrace(ffff800021211ce0,ffff80002123c448,ffff80002123c4a0) at sys_ktrace+0xd2 sys/kern/kern_ktrace.c:535 syscall(ffff80002123c510) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002123c510) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcc300, count: -5 ddb{1}> show registers rdi 0xffff800021211ce0 rsi 0xdead4110dead4110 rbp 0xffff80002123c230 rbx 0xdead4110dead4110 rdx 0 rcx 0xbf787090 rax 0x1 r8 0xfffffd806e227970 r9 0xfffffd807f7d87e0 r10 0x60797d7b5b31112e r11 0xc88ca0f8c7b61134 r12 0xdead4110dead4110 r13 0xfffffd807f7d87e0 r14 0xffff800021211ce0 r15 0xbf787090 rip 0xffffffff811bc6ea ktrops+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002123c1b0 ss 0x10 ktrops+0x4a: movq 0x8(%rbx),%r14 ddb{1}> show proc PROC (syz-executor1494) pid=336099 stat=onproc flags process=0 proc=0 pri=17, usrpri=62, nice=20 forw=0xffffffffffffffff, list=0xffff8000211927e8,0xffff800021211a50 process=0xffff8000ffffadc0 user=0xffff800021237000, vmspace=0xfffffd807efff730 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 54860 330635 83934 0 3 0 biowait syz-executor1494 *39427 336099 1163 0 7 0 syz-executor1494 1163 225704 9157 0 3 0x80 nanoslp syz-executor1494 66411 272433 9157 0 2 0 syz-executor1494 83934 318387 9157 0 3 0x80 nanoslp syz-executor1494 31282 59048 9157 0 3 0x80 nanoslp syz-executor1494 9157 88144 65446 0 3 0x82 nanoslp syz-executor1494 65446 117060 40498 0 3 0x10008a sigsusp ksh 40498 145284 65888 0 3 0x9a poll sshd 41559 375903 1 0 3 0x100083 ttyin getty 65888 48951 1 0 3 0x88 poll sshd 45391 240751 97109 74 3 0x100092 bpf pflogd 97109 470069 1 0 3 0x80 netio pflogd 78626 194977 87330 73 7 0x100010 syslogd 87330 481827 1 0 3 0x100082 netio syslogd 8686 405985 1 0 3 0x100080 kqread resolvd 71513 381772 4017 77 3 0x100092 kqread dhcpleased 71381 132316 4017 77 3 0x100092 kqread dhcpleased 4017 67074 1 0 3 0x80 kqread dhcpleased 1643 141016 0 0 3 0x14200 bored smr 8645 367231 0 0 3 0x14200 pgzero zerothread 96844 411223 0 0 3 0x14200 aiodoned aiodoned 32958 141475 0 0 3 0x14200 syncer update 6958 420947 0 0 3 0x14200 cleaner cleaner 94107 198521 0 0 3 0x14200 reaper reaper 27027 32462 0 0 3 0x14200 pgdaemon pagedaemon 22220 360384 0 0 3 0x14200 bored viomb 28961 436634 0 0 3 0x40014200 acpi0 acpi0 89160 390789 0 0 3 0x40014200 idle1 12172 70231 0 0 3 0x14200 bored softnet 64131 393080 0 0 3 0x14200 bored systqmp 16674 155300 0 0 3 0x14200 bored systq 66787 314189 0 0 3 0x40014200 bored softclock 11335 64200 0 0 3 0x40014200 idle0 1 366161 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 54860 (syz-executor1494) thread 0xffff800021211a40 (330635) exclusive rrwlock inode r = 0 (0xfffffd806ee14f88) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1830 #8 ufs_create+0x41 sys/ufs/ufs/ufs_vnops.c:152 #9 VOP_CREATE+0xbc sys/kern/vfs_vops.c:103 #10 vn_open+0x28f sys/kern/vfs_vnops.c:122 #11 doopenat+0x26a sys/kern/vfs_syscalls.c:1128 #12 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ee14a38) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 vn_open+0x188 sys/kern/vfs_vnops.c:113 #8 doopenat+0x26a sys/kern/vfs_syscalls.c:1128 #9 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #10 Xsyscall+0x128 Process 39427 (syz-executor1494) thread 0xffff800021211ce0 (336099) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829cd5e8) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416 #3 sleep_finish+0x1b2 sys/kern/kern_synch.c:433 #4 tsleep+0x12c sys/kern/kern_synch.c:158 #5 getblk+0x13c sys/kern/vfs_bio.c:1031 #6 bread+0x3a bio_doread sys/kern/vfs_bio.c:436 [inline] #6 bread+0x3a sys/kern/vfs_bio.c:481 #7 ffs_update+0x14b sys/ufs/ffs/ffs_inode.c:91 #8 ufs_inactive+0x25f sys/ufs/ufs/ufs_inode.c:110 #9 VOP_INACTIVE+0xc4 sys/kern/vfs_vops.c:505 #10 vrele+0xd2 sys/kern/vfs_subr.c:824 #11 ktrsettrace+0xb3 sys/kern/kern_ktrace.c:124 #12 ktrops+0x1a4 sys/kern/kern_ktrace.c:550 #13 doktrace+0x514 ktrsetchildren sys/kern/kern_ktrace.c:572 [inline] #13 doktrace+0x514 sys/kern/kern_ktrace.c:494 #14 sys_ktrace+0xd2 sys/kern/kern_ktrace.c:535 #15 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #15 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #16 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10144 6454K 6455K 78643K 11234 0 pcb 13 8K 8K 78643K 13 0 rtable 62 2K 2K 78643K 112 0 ifaddr 29 8K 8K 78643K 30 0 counters 40 33K 33K 78643K 40 0 ioctlops 0 0K 4K 78643K 1479 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1179 74K 74K 78643K 1184 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 1 0K 0K 78643K 1 0 proc 67 87K 87K 78643K 281 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 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 25 122K 122K 78643K 25 0 exec 0 0K 2K 78643K 344 0 tdb 3 0K 0K 78643K 3 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 113 36K 36K 78643K 10766 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 4 0K 0K 78643K 4 0 temp 24 4186K 4262K 78643K 77450 0 kqueue 9 12K 12K 78643K 9 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 plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 17 0 14 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 128 18159 0 18144 1 0 1 1 0 8 0 syncache 296 5 0 5 2 2 0 1 0 8 0 tcpcb 736 7 0 4 1 0 1 1 0 8 0 arp 120 2 0 0 1 0 1 1 0 8 0 inpcb 304 29 0 23 1 0 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 6 0 5 2 1 1 1 0 8 0 pfstkey 112 6 0 5 2 1 1 1 0 8 0 pfstate 320 6 0 5 2 1 1 1 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 97 0 0 7 0 7 7 0 8 0 art_table 32 98 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 19537 0 15853 231 0 231 231 0 8 0 ffsino 272 19537 0 15853 246 0 246 246 0 8 0 nchpl 144 37831 0 36283 58 0 58 58 0 8 0 uvmvnodes 80 19547 0 0 399 0 399 399 0 8 0 vnodes 224 19547 0 0 1150 0 1150 1150 0 8 0 namei 1024 76604 0 76603 2 1 1 1 0 8 0 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 216 254635 0 254634 67 64 3 8 0 8 2 plimitpl 152 20 0 9 1 0 1 1 0 8 0 sigapl 424 9317 0 9282 5 0 5 5 0 8 1 knotepl 112 23 0 0 1 0 1 1 0 8 0 kqueuepl 216 5 0 0 1 0 1 1 0 8 0 pipepl 336 67 0 64 2 1 1 1 0 8 0 fdescpl 496 9303 0 9282 3 0 3 3 0 8 0 filepl 152 37312 0 37251 3 0 3 3 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 22 0 9 1 0 1 1 0 8 0 pgrppl 48 22 0 9 1 0 1 1 0 8 0 ucredpl 96 69 0 57 1 0 1 1 0 8 0 zombiepl 144 9282 0 9281 2 1 1 1 0 8 0 processpl 1064 9317 0 9281 3 0 3 3 0 8 0 procpl 672 9317 0 9281 4 0 4 4 0 8 0 sockpl 480 18205 0 18181 10 5 5 5 0 8 1 mcl64k 65536 28 0 0 4 0 4 4 0 8 0 mcl12k 12288 18 0 0 2 0 2 2 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 65 0 0 8 0 8 8 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 126 0 0 7 0 7 7 0 8 0 bufpl 288 178485 0 153748 1768 0 1768 1768 0 8 0 anonpl 24 705715 0 702947 23 4 19 19 0 186 1 amapchunkpl 152 12107 0 11923 9 1 8 8 0 158 0 amappl16 200 45410 0 45401 2 0 2 2 0 8 1 amappl13 176 18 0 17 2 1 1 1 0 8 0 amappl12 168 18 0 18 2 2 0 1 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 23 0 18 1 0 1 1 0 8 0 amappl9 144 448 0 446 1 0 1 1 0 8 0 amappl8 136 263 0 263 2 2 0 1 0 8 0 amappl7 128 48 0 45 1 0 1 1 0 8 0 amappl6 120 100 0 90 1 0 1 1 0 8 0 amappl5 112 188 0 168 1 0 1 1 0 8 0 amappl4 104 502 0 484 1 0 1 1 0 8 0 amappl3 96 9198 0 9184 1 0 1 1 0 8 0 amappl2 88 312 0 278 1 0 1 1 0 8 0 amappl1 80 52910 0 52500 11 2 9 9 0 8 0 amappl 88 10516 0 10428 3 0 3 3 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 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 9303 0 9282 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9303 0 9282 1 0 1 1 0 8 0 vmmpekpl 168 24840 0 24822 1 0 1 1 0 8 0 vmmpepl 168 340039 0 339003 54 5 49 49 0 357 3 vmsppl 368 9302 0 9282 3 0 3 3 0 8 1 rwobjpl 56 72137 0 52002 288 4 284 284 0 8 0 pdppl 4096 18614 0 18564 70 16 54 54 0 8 4 pvpl 32 1139093 0 1134336 53 11 42 43 0 265 2 pmappl 248 9302 0 9282 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2360 0 21 67 0 67 67 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82832ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff829cd3e0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829cd3e0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800021206560,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f __mp_lock(ffffffff829cd3e0) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829cd3e0) at __mp_lock+0x129 sys/kern/kern_lock.c:147 kqueue_scan(ffff800021206850,8,ffff800021206750,ffff800021206940,ffff8000ffff6d30,ffff80002120699c) at kqueue_scan+0xd2 sys/kern/kern_event.c:1289 sys_kevent(ffff8000ffff6d30,ffff800021206a00,ffff800021206a60) at sys_kevent+0x47b sys/kern/kern_event.c:981 syscall(ffff800021206ad0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021206ad0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdbbb0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at ktrops+0x4a: movq 0x8(%rbx),%r14 ddb{1}> trace ktrops(ffff800021211ce0,dead4110dead4110,0,bf787090,fffffd806e227970,fffffd807f7d87e0) at ktrops+0x4a ktrcanset sys/kern/kern_ktrace.c:702 [inline] ktrops(ffff800021211ce0,dead4110dead4110,0,bf787090,fffffd806e227970,fffffd807f7d87e0) at ktrops+0x4a sys/kern/kern_ktrace.c:547 doktrace(fffffd806e227970,4,3f787090,0,ffff800021211ce0) at doktrace+0x514 ktrsetchildren sys/kern/kern_ktrace.c:572 [inline] doktrace(fffffd806e227970,4,3f787090,0,ffff800021211ce0) at doktrace+0x514 sys/kern/kern_ktrace.c:494 sys_ktrace(ffff800021211ce0,ffff80002123c448,ffff80002123c4a0) at sys_ktrace+0xd2 sys/kern/kern_ktrace.c:535 syscall(ffff80002123c510) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002123c510) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcc300, count: -5