witness: lock order reversal: 1st 0xffffffff82d0ad08 &sched_lock (&sched_lock) 2nd 0xffff8000246e9618 &pr->ps_mtx (&pr->ps_mtx) lock order "&pr->ps_mtx"(mutex) -> "&sched_lock"(sched_lock) first seen at: #0 __mp_lock+0xa2 read_rflags machine/cpufunc.h:195 [inline] #0 __mp_lock+0xa2 intr_disable machine/cpufunc.h:216 [inline] #0 __mp_lock+0xa2 sys/kern/kern_lock.c:142 #1 donice+0x178 sys/kern/kern_resource.c:218 #2 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #2 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #3 Xsyscall+0x128 lock order "&sched_lock"(sched_lock) -> "&pr->ps_mtx"(mutex) first seen at: #0 mtx_enter+0x3e sys/kern/kern_lock.c:265 #1 single_thread_set+0x35a single_thread_wait sys/kern/kern_sig.c:2172 [inline] #1 single_thread_set+0x35a sys/kern/kern_sig.c:2155 #2 sigexit+0x90 sys/kern/kern_sig.c:1562 #3 postsig+0x4a9 sys/kern/kern_sig.c:1494 #4 userret+0x16e sys/kern/kern_sig.c:1987 #5 syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] #5 syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 #6 Xsyscall+0x128 Stopped at db_enter+0x1c: addq $0x8,%rsp ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000246e9618,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff8000246e9618,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1110 mtx_enter(ffff8000246e9608) at mtx_enter+0x3e sys/kern/kern_lock.c:265 single_thread_set(ffff8000246e6808,0,1) at single_thread_set+0x35a single_thread_wait sys/kern/kern_sig.c:2172 [inline] single_thread_set(ffff8000246e6808,0,1) at single_thread_set+0x35a sys/kern/kern_sig.c:2155 sigexit(ffff8000246e6808,6) at sigexit+0x90 sys/kern/kern_sig.c:1562 postsig(ffff8000246e6808,6,ffff80002e4b11b8) at postsig+0x4a9 sys/kern/kern_sig.c:1494 userret(ffff8000246e6808) at userret+0x16e sys/kern/kern_sig.c:1987 syscall(ffff80002e4b12f0) at syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] syscall(ffff80002e4b12f0) at syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xad3dd8fbb00, count: -9 ddb{1}> show registers rdi 0x3 rsi 0xffffffff82b6a550 __sancov_gen_cov_switch_values.134 rbp 0xffff80002e4b0ec0 rbx 0x3 rdx 0 rcx 0xffff8000246e6808 rax 0xffff800020d58ff0 r8 0xffff80002e4b0e30 r9 0x8080808080808080 r10 0x373a6aec8ea4116 r11 0xa8fc90eb0ee9e9b9 r12 0xfffffd8003a0a850 r13 0 r14 0xfffffd80039f4a60 r15 0xfffffd80031c7bc0 rip 0xffffffff81334fdc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e4b0eb0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.4) pid=63740 stat=onproc flags process=500010 proc=4002000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800021263d38,0xffff80002121b570 process=0xffff8000246e9508 user=0xffff80002e4ac000, vmspace=0xfffffd8008a121d0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 90358 399249 8933 32767 7 0x10 syz-executor.7 77058 292682 39750 32767 4 0x582010 syz-executor.4 *77058 63740 39750 32767 7 0x4502010 syz-executor.4 77058 440996 39750 32767 4 0x4580090 fsleep syz-executor.4 77058 62700 39750 32767 4 0x4580090 fsleep syz-executor.4 60540 374138 24408 32767 3 0x90 nanoslp syz-executor.5 60540 155711 24408 32767 3 0x4000090 netio syz-executor.5 60540 164854 24408 32767 3 0x4000090 fsleep syz-executor.5 44197 503896 36553 32767 4 0x82010 syz-executor.1 44197 226151 36553 32767 3 0x4082010 getblk syz-executor.1 44197 505069 36553 32767 3 0x4002010 suspend syz-executor.1 36553 165992 64745 32767 3 0x90 nanoslp syz-executor.1 64745 125325 17245 0 3 0x82 wait syz-executor.1 8399 323932 61705 32767 3 0x10 biowait syz-executor.0 61705 205083 17245 0 3 0x82 wait syz-executor.0 90221 242871 25279 32767 3 0x10 biowait syz-executor.2 25279 201066 17245 0 3 0x82 wait syz-executor.2 50540 96285 1446 32767 3 0x90 nanoslp syz-executor.6 1446 306613 17245 0 3 0x82 wait syz-executor.6 39750 85471 47595 32767 3 0x90 nanoslp syz-executor.4 47595 378236 17245 0 3 0x82 wait syz-executor.4 38183 382734 53143 32767 3 0x90 nanoslp syz-executor.3 53143 453395 17245 0 3 0x82 wait syz-executor.3 8933 325700 84717 32767 3 0x90 nanoslp syz-executor.7 84717 79192 17245 0 3 0x82 wait syz-executor.7 71686 317009 0 0 3 0x14200 bored sosplice 24408 90061 23764 32767 3 0x90 nanoslp syz-executor.5 23764 76396 17245 0 3 0x82 wait syz-executor.5 17245 74096 33271 0 3 0x2000082 kqread syz-fuzzer 17245 288346 33271 0 3 0x6000082 nanoslp syz-fuzzer 17245 215741 33271 0 3 0x6000082 thrsleep syz-fuzzer 17245 315286 33271 0 3 0x6000082 wait syz-fuzzer 17245 148027 33271 0 3 0x6000082 thrsleep syz-fuzzer 17245 285085 33271 0 3 0x6000082 thrsleep syz-fuzzer 17245 46399 33271 0 3 0x6000082 wait syz-fuzzer 17245 310045 33271 0 3 0x6000082 wait syz-fuzzer 17245 18934 33271 0 3 0x6000082 thrsleep syz-fuzzer 17245 111630 33271 0 3 0x6000082 thrsleep syz-fuzzer 17245 295905 33271 0 3 0x6000082 wait syz-fuzzer 17245 426934 33271 0 3 0x6000082 thrsleep syz-fuzzer 17245 39906 33271 0 3 0x6000082 thrsleep syz-fuzzer 17245 407581 33271 0 3 0x6000082 wait syz-fuzzer 17245 225202 33271 0 3 0x6000082 wait syz-fuzzer 17245 62295 33271 0 3 0x6000082 wait syz-fuzzer 17245 82506 33271 0 3 0x6000082 wait syz-fuzzer 33271 484522 12343 0 3 0x10008a sigsusp ksh 12343 161795 58502 0 3 0x9a kqread sshd 2982 24697 1 0 3 0x100083 ttyin getty 58502 432199 1 0 3 0x88 kqread sshd 3733 443097 86699 73 3 0x1100090 kqread syslogd 86699 456126 1 0 3 0x100082 netio syslogd 14130 147458 1 0 3 0x100080 kqread resolvd 97837 16346 79794 77 3 0x100092 kqread dhcpleased 42834 121946 79794 77 3 0x100092 kqread dhcpleased 79794 154447 1 0 3 0x80 kqread dhcpleased 32784 345079 0 0 3 0x14200 bored smr 80098 372757 0 0 2 0x14200 zerothread 63895 243615 0 0 3 0x14200 aiodoned aiodoned 19985 163227 0 0 3 0x14200 syncer update 16466 300422 0 0 3 0x14200 cleaner cleaner 14046 264144 0 0 3 0x14200 reaper reaper 17472 112976 0 0 3 0x14200 pgdaemon pagedaemon 94647 350388 0 0 3 0x14200 bored viomb 14930 391897 0 0 3 0x40014200 acpi0 acpi0 88015 75191 0 0 3 0x40014200 idle1 98199 184159 0 0 3 0x14200 bored softnet3 33834 258367 0 0 3 0x14200 bored softnet2 2690 174264 0 0 3 0x14200 bored softnet1 63781 516306 0 0 3 0x14200 bored softnet0 39238 494137 0 0 3 0x14200 bored systqmp 85372 334890 0 0 3 0x14200 bored systq 77404 119390 0 0 3 0x40014200 bored softclock 91912 67316 0 0 3 0x40014200 idle0 1 386907 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive sched_lock &sched_lock r = 0 (0xffffffff82d0ad08) #0 witness_lock+0x447 #1 single_thread_set+0x179 sys/kern/kern_sig.c:2113 #2 sigexit+0x90 sys/kern/kern_sig.c:1562 #3 postsig+0x4a9 sys/kern/kern_sig.c:1494 #4 userret+0x16e sys/kern/kern_sig.c:1987 #5 syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] #5 syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 #6 Xsyscall+0x128 Process 90358 (syz-executor.7) thread 0xffff80002121a2c8 (399249) exclusive rwlock uobjlk r = 0 (0xfffffd807efb0240) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 uvm_fault_lower_lookup+0x4a sys/uvm/uvm_fault.c:1126 #3 uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 #4 uvm_fault+0x238 #5 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd8008a12a08) #0 witness_lock+0x447 #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x3e sys/uvm/uvm_fault.c:672 #3 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #4 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 Process 77058 (syz-executor.4) thread 0xffff8000246e6808 (63740) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82c795f0) #0 witness_lock+0x447 #1 postsig+0x49e sys/kern/kern_sig.c:1500 #2 userret+0x16e sys/kern/kern_sig.c:1987 #3 syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] #3 syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 #4 Xsyscall+0x128 exclusive sched_lock &sched_lock r = 0 (0xffffffff82d0ad08) #0 witness_lock+0x447 #1 single_thread_set+0x179 sys/kern/kern_sig.c:2113 #2 sigexit+0x90 sys/kern/kern_sig.c:1562 #3 postsig+0x4a9 sys/kern/kern_sig.c:1494 #4 userret+0x16e sys/kern/kern_sig.c:1987 #5 syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] #5 syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 #6 Xsyscall+0x128 Process 44197 (syz-executor.1) thread 0xffff8000211efaa0 (226151) exclusive rrwlock inode r = 0 (0xfffffd807b856708) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 sys_ftruncate+0x12e sys/kern/vfs_syscalls.c:2872 #6 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #6 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #7 Xsyscall+0x128 Process 8399 (syz-executor.0) thread 0xffff800021263540 (323932) exclusive rrwlock inode r = 0 (0xfffffd80663680a0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343 #6 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8077db5e70) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 Process 90221 (syz-executor.2) thread 0xffff80002121ad68 (242871) exclusive rrwlock inode r = 0 (0xfffffd8066368b40) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343 #6 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bdfe808) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10224 6413K 6420K 78643K 11406 0 pcb 13 12K 14K 78643K 17 0 rtable 240 6K 7K 78643K 2243 0 pf 29 8K 8K 78643K 97 0 ifaddr 44 15K 16K 78643K 186 0 ifgroup 50 2K 2K 78643K 186 0 sysctl 2 0K 0K 78643K 2 0 counters 60 35K 35K 78643K 128 0 ioctlops 0 0K 2K 78643K 519 0 iov 1 2K 28K 78643K 2056 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 4430 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 425 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 3253 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 113K 78643K 22110 0 sigio 0 0K 0K 78643K 2100 0 proc 56 78K 115K 78643K 2808 0 subproc 104 6K 6K 78643K 546 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1450 0 in_multi 99 7K 7K 78643K 669 0 ether_multi 1 0K 0K 78643K 26 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 283 1261K 1261K 78643K 283 0 exec 0 0K 1K 78643K 3228 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 8 62K 64K 78643K 10 0 UVM amap 475 93K 110K 78643K 220141 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 548 0 NDP 11 0K 2K 78643K 129 0 temp 74 5916K 6044K 78643K 56453 0 kqueue 12 18K 36K 78643K 1852 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 120 762 0 759 7 6 1 3 0 8 0 rtentry 112 528 0 415 4 0 4 4 0 8 0 unpcb 144 10092 0 10077 109 108 1 10 0 8 0 syncache 304 240 0 240 37 36 1 1 0 8 1 tcpqe 32 581 0 581 22 21 1 1 0 8 1 tcpcb 808 8204 0 8169 205 198 7 17 0 8 2 arp 120 91 0 73 1 0 1 1 0 8 0 ipq 40 75 0 75 12 12 0 1 0 8 0 ipqe 40 306 0 306 12 12 0 1 0 8 0 inpcb 368 14274 0 14237 204 197 7 20 0 8 1 nd6 136 164 0 137 5 3 2 2 0 8 0 kcovpl 48 42 0 34 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2141 0 1677 41 11 30 31 0 8 0 art_table 32 2142 0 1677 4 0 4 4 0 8 0 art_node 16 527 0 424 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 4 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 3244 0 3234 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 28881 0 27404 93 0 93 93 0 8 0 ffsino 272 28881 0 27404 99 0 99 99 0 8 0 nchpl 144 57127 0 55487 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 182600 0 182598 4 3 1 2 0 8 0 percpumem 16 77 0 34 1 0 1 1 0 8 0 kstatmem 264 90 0 68 2 0 2 2 0 8 0 scxspl 216 171549 0 171547 87 85 2 8 1 8 1 plimitpl 152 2891 0 2868 32 31 1 2 0 8 0 sigapl 424 22328 0 22275 8 1 7 7 0 8 0 futexpl 64 199356 0 199353 3 2 1 1 0 8 0 knotepl 120 1170 0 0 24 3 21 24 0 8 0 kqueuepl 216 5000 0 4991 101 100 1 7 0 8 0 pipepl 320 26665 0 26635 252 247 5 15 0 8 2 fdescpl 496 22310 0 22277 6 1 5 6 0 8 0 filepl 152 158259 0 158019 279 268 11 23 0 8 1 lockfpl 104 4614 0 4611 1 0 1 1 0 8 0 lockfspl 48 1594 0 1591 1 0 1 1 0 8 0 sessionpl 144 57 0 41 1 0 1 1 0 8 0 pgrppl 48 375 0 359 1 0 1 1 0 8 0 ucredpl 104 17571 0 17553 1 0 1 1 0 8 0 zombiepl 144 22277 0 22275 1 0 1 1 0 8 0 processpl 1072 22328 0 22275 4 0 4 4 0 8 0 procpl 680 61645 0 61569 33 25 8 8 0 8 1 sosppl 168 353 0 353 26 26 0 1 0 8 0 sockpl 488 25950 0 25895 472 461 11 36 0 8 2 mcl64k 65536 42 0 0 4 1 3 3 0 8 0 mcl16k 16384 49 0 0 4 1 3 3 0 8 0 mcl12k 12288 33 0 0 2 0 2 2 0 8 0 mcl9k 9216 20 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 5 2 3 3 0 8 0 mcl4k 4096 57 0 0 3 0 3 3 0 8 0 mcl2k2 2112 14 0 0 1 0 1 1 0 8 0 mcl2k 2048 488 0 0 34 16 18 34 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 2319 0 0 108 0 108 108 0 8 0 bufpl 288 38993 0 32665 453 0 453 453 0 8 0 anonpl 24 7537528 0 7526119 583 456 127 179 0 186 0 amapchunkpl 152 721569 0 720695 185 146 39 56 0 158 0 amappl16 200 361293 0 361038 1470 1438 32 73 0 8 7 amappl15 192 10 0 9 1 0 1 1 0 8 0 amappl14 184 257 0 243 2 1 1 2 0 8 0 amappl13 176 14 0 14 4 4 0 1 0 8 0 amappl12 168 23474 0 23435 3 1 2 2 0 8 0 amappl11 160 52 0 42 1 0 1 1 0 8 0 amappl10 152 70 0 58 1 0 1 1 0 8 0 amappl9 144 412 0 411 1 0 1 1 0 8 0 amappl8 136 1297 0 1047 9 0 9 9 0 8 0 amappl7 128 191 0 175 2 0 2 2 0 8 0 amappl6 120 669 0 641 2 1 1 2 0 8 0 amappl5 112 819 0 809 1 0 1 1 0 8 0 amappl4 104 1232 0 1183 2 0 2 2 0 8 0 amappl3 96 135680 0 135590 26 23 3 4 0 8 0 amappl2 88 23564 0 23483 3 1 2 3 0 8 0 amappl1 80 86828 0 86303 22 10 12 22 0 8 0 amappl 88 218419 0 218166 7 0 7 7 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 22310 0 22277 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 22310 0 22277 1 0 1 1 0 8 0 vmmpekpl 168 271797 0 271740 7 2 5 7 0 8 0 vmmpepl 168 1612770 0 1610311 554 423 131 161 0 357 1 vmsppl 464 22309 0 22277 6 1 5 6 0 8 0 rwobjpl 56 637202 0 629662 143 26 117 121 0 8 0 pdppl 4096 44628 0 44554 640 558 82 90 0 8 8 pvpl 32 11729077 0 11711498 946 735 211 340 0 265 0 pmappl 248 22309 0 22277 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1937 0 1014 28 0 28 28 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82c29ff0) at x86_ipi_db+0x1e 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+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc intr_handler(ffff80002ca22d00,ffff800000069c00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x29 kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x29 sys/dev/kcov.c:158 __mp_lock(ffffffff82c793e8) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c793e8) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff80002ca22e60,ffff80000006bc00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xspllower() at Xspllower+0x1d pmap_enter(fffffd807effa1f0,50f3ff3d000,67dcb000,4,20) at pmap_enter+0x9b7 pmap_unmap_ptes sys/arch/amd64/amd64/pmap.c:444 [inline] pmap_enter(fffffd807effa1f0,50f3ff3d000,67dcb000,4,20) at pmap_enter+0x9b7 sys/arch/amd64/amd64/pmap.c:2892 uvm_fault_lower_lookup(ffff80002ca232d0,ffff80002ca23308,ffff80002ca23250) at uvm_fault_lower_lookup+0x2a4 sys/uvm/uvm_fault.c:1192 uvm_fault_lower(ffff80002ca232d0,ffff80002ca23308,ffff80002ca23250,0) at uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 uvm_fault(fffffd8008a12910,50f3ff3c000,0,4) at uvm_fault+0x238 upageflttrap(ffff80002ca23450,50f3ff3cc9b) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002ca23450) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7302468ba490, count: -18 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000246e9618,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff8000246e9618,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1110 mtx_enter(ffff8000246e9608) at mtx_enter+0x3e sys/kern/kern_lock.c:265 single_thread_set(ffff8000246e6808,0,1) at single_thread_set+0x35a single_thread_wait sys/kern/kern_sig.c:2172 [inline] single_thread_set(ffff8000246e6808,0,1) at single_thread_set+0x35a sys/kern/kern_sig.c:2155 sigexit(ffff8000246e6808,6) at sigexit+0x90 sys/kern/kern_sig.c:1562 postsig(ffff8000246e6808,6,ffff80002e4b11b8) at postsig+0x4a9 sys/kern/kern_sig.c:1494 userret(ffff8000246e6808) at userret+0x16e sys/kern/kern_sig.c:1987 syscall(ffff80002e4b12f0) at syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] syscall(ffff80002e4b12f0) at syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xad3dd8fbb00, count: -9