kernel: page fault trap, code=0 Stopped at schedclock+0xc0: movzbl 0x35c(%rax),%eax ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace schedclock(ffff80002a4c2018) at schedclock+0xc0 sys/kern/sched_bsd.c:556 statclock(ffffffff833eac08,ffff800035a1e530,0) at statclock+0x296 sys/kern/kern_clock.c:330 clockintr_dispatch(ffff800035a1e530) at clockintr_dispatch+0x32a lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a __sanitizer_cov_trace_cmp8(ffff800035a1e698,fffffd8006ed8b00) at __sanitizer_cov_trace_cmp8+0xf sys/dev/kcov.c:216 _rb_find(ffffffff833869e0,fffffd80735b3220,ffff800035a1e698) at _rb_find+0x68 sys/kern/subr_tree.c:450 uvm_pagelookup(fffffd80735b3210,2e8e000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd80735b3210,2e8e000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1213 buf_map(fffffd80735b3150) at buf_map+0x2a6 buf_get(0,0,3d65f18) at buf_get+0x5b5 sys/kern/vfs_bio.c:1175 geteblk(3d65f18) at geteblk+0x3c readdisklabel(2902,ffffffff82c7f8d0,ffff8000011d3600,0) at readdisklabel+0x1c4 sys/arch/amd64/amd64/disksubr.c:96 vndopen(2902,1,2000,ffff80002a4c2018) at vndopen+0x207 sys/dev/vnd.c:204 spec_open(ffff800035a1ead8) at spec_open+0x2e9 sys/kern/spec_vnops.c:150 VOP_OPEN(fffffd806e9fcb58,1,fffffd807f7d78f0,ffff80002a4c2018) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138 vn_open(ffff800035a1ed28,201,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177 doopenat(ffff80002a4c2018,ffffff9c,20000200,200,0,ffff800035a1eed0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff800035a1ef80) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb7c4cfe2000, count: -19 ddb> show registers rdi 0xffffffff rsi 0xc rbp 0xffff800035a1e420 rbx 0xffffffff828686f0 statclock rdx 0 rcx 0xffffffff833e9ff0 cpu_info_full_primary+0x1ff0 rax 0 r8 0 r9 0 r10 0 r11 0x6bb85a2310474fa0 r12 0x3ac4 __ALIGN_SIZE+0x2ac4 r13 0 r14 0xffff80002a4c2018 r15 0 rip 0xffffffff81bad7c0 schedclock+0xc0 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800035a1e3d0 ss 0x10 schedclock+0xc0: movzbl 0x35c(%rax),%eax ddb> show proc kernel: page fault trap, code=0 Faulted in DDB; continuing... ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10181 10020K 10222K 166960K 11465 0 pcb 17 14K 15K 166960K 59 0 rtable 204 8K 9K 166960K 1079 0 pf 30 12K 13K 166960K 81 0 ifaddr 39 7K 7K 166960K 143 0 ifgroup 50 2K 2K 166960K 147 0 sysctl 1 0K 0K 166960K 1 0 counters 30 17K 17K 166960K 54 0 ioctlops 0 0K 4K 166960K 65 0 iov 0 0K 12K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1371 86K 87K 166960K 1813 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 16 57K 93K 166960K 634 0 sigio 0 0K 0K 166960K 1 0 proc 58 59K 91K 166960K 1129 0 subproc 104 6K 6K 166960K 403 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 27 0 in_multi 86 6K 7K 166960K 351 0 ether_multi 1 0K 0K 166960K 2 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 792 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 187 71K 90K 166960K 6323 0 UVM aobj 9 2K 2K 166960K 13 0 pinsyscall 37 74K 100K 166960K 2459 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 9 0 NDP 15 0K 1K 166960K 95 0 temp 75 6816K 6880K 166960K 22743 0 kqueue 13 20K 26K 166960K 39 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 86 0 83 1 0 1 1 0 8 0 rtentry 112 375 0 283 4 0 4 4 0 8 0 unpcb 144 183 0 166 3 0 3 3 0 8 2 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 46 0 42 1 0 1 1 0 8 0 arp 88 68 0 50 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 336 413 0 406 12 3 9 12 0 8 8 nd6 104 91 0 71 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 31 0 23 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1458 0 1082 29 0 29 29 0 8 5 art_table 32 1460 0 1082 4 0 4 4 0 8 0 art_node 16 374 0 291 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 0 1 0 1 1 0 8 0 semapl 112 3 0 0 1 0 1 1 0 8 0 shmpl 112 10 0 4 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dirhash: pool(0xffffffff835d03c0:dirhash): free list modified: page 0xffff80002a49e000; item ordinal 0; addr 0xffff80002a49e800 (p 0xfffffd8073acc000); offset 0x0=0x0 pool(dirhash): free list modified: page 0xffff80002a49e000; item ordinal 0; addr 0xffff80002a49e800 (p 0xfffffd8073acc000); offset 0x0=0x0 dirhash: pool(0xffffffff835d03c0:dirhash): page inconsistency: page 0xffff80002a49e000; item ordinal 1; addr 0x3301765a3a9c9bac dino2pl 256 1931 0 392 97 0 97 97 0 8 0 ffsino 240 1931 0 392 91 0 91 91 0 8 0 nchpl 144 2358 0 657 64 0 64 64 0 8 0 uvmvnodes 80 2387 0 0 49 0 49 49 0 8 0 vnodes 216 2387 0 0 133 0 133 133 0 8 0 namei 1024 10030 0 10029 2 0 2 2 0 8 1 namei: pool(0xffffffff834c8b08:namei): free list modified: page 0xffff80002a47a000; item ordinal 0; addr 0xffff80002a47b000 (p 0xfffffd807f7e4000); offset 0x0=0x0 pool(namei): free list modified: page 0xffff80002a47a000; item ordinal 0; addr 0xffff80002a47b000 (p 0xfffffd807f7e4000); offset 0x0=0x0 namei: pool(0xffffffff834c8b08:namei): page inconsistency: page 0xffff80002a47a000; item ordinal 1; addr 0x9b494fb51bc0bf26 kstatmem 264 70 0 48 2 0 2 2 0 8 0 scxspl 216 11429 0 11427 8 0 8 8 1 8 7 plimitpl 152 82 0 66 1 0 1 1 0 8 0 sigapl 424 931 0 886 7 0 7 7 0 8 1 futexpl 64 2653 0 2651 1 0 1 1 0 8 0 knotepl 120 7333 0 7286 2 0 2 2 0 8 0 kqueuepl 184 58 0 49 1 0 1 1 0 8 0 pipepl 288 182 0 155 3 0 3 3 0 8 0 fdescpl 432 914 0 886 5 0 5 5 0 8 1 filepl 120 3607 0 3369 14 0 14 14 0 8 6 lockfpl 104 128 0 126 2 0 2 2 0 8 1 lockfspl 48 30 0 28 1 0 1 1 0 8 0 sessionpl 144 44 0 36 1 0 1 1 0 8 0 pgrppl 48 78 0 62 1 0 1 1 0 8 0 ucredpl 104 376 0 362 1 0 1 1 0 8 0 zombiepl 144 886 0 886 1 0 1 1 0 8 1 processpl 1096 931 0 886 4 0 4 4 0 8 0 processpl: pool(0xffffffff83565a50:processpl): page inconsistency: page 0x0; at page head addr 0xffff80002a467f90 (p 0xffff80002a464000) procpl 648 1158 0 1110 6 0 6 6 0 8 1 procpl: pool(0xffffffff835658a8:procpl): page inconsistency: page 0x0; at page head addr 0xffff80002a40df90 (p 0xffff80002a40c000) procpl: pool(0xffffffff835658a8:procpl): page inconsistency: page 0x0; at page head addr 0xffff80002a457f90 (p 0xffff80002a456000) sockpl 504 688 0 661 21 9 12 21 0 8 7 mcl64k 65536 1 0 1 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 8 0 8 1 0 1 1 0 8 1 mcl4k 4096 3 0 3 1 0 1 1 0 8 1 mcl2k 2048 5670 0 5569 29 8 21 29 0 8 6 mtagpl 96 7 0 7 1 0 1 1 0 8 1 mbufpl 256 9743 0 9558 16 0 16 16 0 8 2 bufpl 280 5991 0 92 422 0 422 422 0 8 0 anonpl 24 189342 0 186461 80 0 80 80 0 187 51 amapchunkpl 152 19525 0 19157 43 0 43 43 0 158 26 amappl16 200 3999 0 3992 20 12 8 14 0 8 7 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 186 0 176 1 0 1 1 0 8 0 amappl13 176 14 0 14 1 0 1 1 0 8 1 amappl12 168 1993 0 1968 2 0 2 2 0 8 0 amappl11 160 50 0 40 1 0 1 1 0 8 0 amappl10 152 9 0 9 1 0 1 1 0 8 1 amappl9 144 143 0 143 1 0 1 1 0 8 1 amappl8 136 52 0 51 1 0 1 1 0 8 0 amappl7 128 175 0 165 1 0 1 1 0 8 0 amappl6 120 383 0 382 1 0 1 1 0 8 0 amappl5 112 229 0 221 1 0 1 1 0 8 0 amappl4 104 392 0 375 1 0 1 1 0 8 0 amappl3 96 3341 0 3269 3 0 3 3 0 8 0 amappl2 88 1222 0 1154 2 0 2 2 0 8 0 amappl1 80 11239 0 10710 14 0 14 14 0 8 2 amappl 88 5676 0 5543 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 12 0 4 1 0 1 1 0 8 0 uaddrrnd 24 914 0 886 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 914 0 886 1 0 1 1 0 8 0 vmmpekpl 168 11302 0 11250 3 0 3 3 0 8 0 vmmpepl 168 64265 0 62636 90 0 90 90 0 357 15 vmsppl 344 913 0 886 4 0 4 4 0 8 1 rwobjpl 24 24380 0 21183 20 0 20 20 0 8 0 pdppl 4096 1835 0 1772 137 66 71 85 0 8 8 pvpl 32 525994 0 517834 353 10 343 353 0 265 264 pmappl 216 913 0 886 3 0 3 3 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 451 0 86 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace schedclock(ffff80002a4c2018) at schedclock+0xc0 sys/kern/sched_bsd.c:556 statclock(ffffffff833eac08,ffff800035a1e530,0) at statclock+0x296 sys/kern/kern_clock.c:330 clockintr_dispatch(ffff800035a1e530) at clockintr_dispatch+0x32a lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a __sanitizer_cov_trace_cmp8(ffff800035a1e698,fffffd8006ed8b00) at __sanitizer_cov_trace_cmp8+0xf sys/dev/kcov.c:216 _rb_find(ffffffff833869e0,fffffd80735b3220,ffff800035a1e698) at _rb_find+0x68 sys/kern/subr_tree.c:450 uvm_pagelookup(fffffd80735b3210,2e8e000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd80735b3210,2e8e000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1213 buf_map(fffffd80735b3150) at buf_map+0x2a6 buf_get(0,0,3d65f18) at buf_get+0x5b5 sys/kern/vfs_bio.c:1175 geteblk(3d65f18) at geteblk+0x3c readdisklabel(2902,ffffffff82c7f8d0,ffff8000011d3600,0) at readdisklabel+0x1c4 sys/arch/amd64/amd64/disksubr.c:96 vndopen(2902,1,2000,ffff80002a4c2018) at vndopen+0x207 sys/dev/vnd.c:204 spec_open(ffff800035a1ead8) at spec_open+0x2e9 sys/kern/spec_vnops.c:150 VOP_OPEN(fffffd806e9fcb58,1,fffffd807f7d78f0,ffff80002a4c2018) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138 vn_open(ffff800035a1ed28,201,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177 doopenat(ffff80002a4c2018,ffffff9c,20000200,200,0,ffff800035a1eed0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff800035a1ef80) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb7c4cfe2000, count: -19 ddb> machine ddbcpu 1 No such command ddb> trace schedclock(ffff80002a4c2018) at schedclock+0xc0 sys/kern/sched_bsd.c:556 statclock(ffffffff833eac08,ffff800035a1e530,0) at statclock+0x296 sys/kern/kern_clock.c:330 clockintr_dispatch(ffff800035a1e530) at clockintr_dispatch+0x32a lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a __sanitizer_cov_trace_cmp8(ffff800035a1e698,fffffd8006ed8b00) at __sanitizer_cov_trace_cmp8+0xf sys/dev/kcov.c:216 _rb_find(ffffffff833869e0,fffffd80735b3220,ffff800035a1e698) at _rb_find+0x68 sys/kern/subr_tree.c:450 uvm_pagelookup(fffffd80735b3210,2e8e000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd80735b3210,2e8e000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1213 buf_map(fffffd80735b3150) at buf_map+0x2a6 buf_get(0,0,3d65f18) at buf_get+0x5b5 sys/kern/vfs_bio.c:1175 geteblk(3d65f18) at geteblk+0x3c readdisklabel(2902,ffffffff82c7f8d0,ffff8000011d3600,0) at readdisklabel+0x1c4 sys/arch/amd64/amd64/disksubr.c:96 vndopen(2902,1,2000,ffff80002a4c2018) at vndopen+0x207 sys/dev/vnd.c:204 spec_open(ffff800035a1ead8) at spec_open+0x2e9 sys/kern/spec_vnops.c:150 VOP_OPEN(fffffd806e9fcb58,1,fffffd807f7d78f0,ffff80002a4c2018) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138 vn_open(ffff800035a1ed28,201,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177 doopenat(ffff80002a4c2018,ffffff9c,20000200,200,0,ffff800035a1eed0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff800035a1ef80) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb7c4cfe2000, count: -19