panic: acquipraniincg: k e brnleolck daibaleg nsolseteip lc oacsks weirttiho n s "pi!nl_okecrkn oelr_ l corcik_thieclald () " f a i l seed:c t i o n he ld ( fkielrnee l "_l/osyckz)k al l e r/ m a n a ge r s/ s e t u i d / k er n e l/ s y s /u v m/ uv m _ m a p . c " , l in e 2 7 3 4 &Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 194162 9987 32767 0x10 0x4000000 1 syz-executor.0 * 12114 60102 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8258e8f2) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82601511,ffffffff826271db,aae,ffffffff825bd978) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_map_teardown(fffffd8068248b98) at uvm_map_teardown+0x2e8 sys/uvm/uvm_map.c:2736 uvmspace_free(fffffd8068248b98) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9a40) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: 9 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic cpu0: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_map.c", line 2734 *cpu1: acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8258e8f2) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82601511,ffffffff826271db,aae,ffffffff825bd978) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_map_teardown(fffffd8068248b98) at uvm_map_teardown+0x2e8 sys/uvm/uvm_map.c:2736 uvmspace_free(fffffd8068248b98) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9a40) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: -6 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800021135030 rbx 0xffffffff828f2bff cpu_info_full_primary+0x2bff rdx 0 rcx 0 rax 0xffff8000210f9a40 r8 0x101010101010101 r9 0x8080808080808080 r10 0x69196a67801e3c11 r11 0xf048caebccde6fa8 r12 0xffffffff828f2a00 cpu_info_full_primary+0x2a00 r13 0 r14 0xffff800020ce9a00 r15 0x1 rip 0xffffffff819ed3a8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021135020 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (reaper) pid=12114 stat=onproc flags process=14000 proc=200 pri=4, usrpri=58, nice=20 forw=0xffffffffffffffff, list=0xffff8000210f97a0,0xffff8000210f9cf0 process=0xffff8000ffffd8f0 user=0xffff800021130000, vmspace=0xffffffff82b6a868 estcpu=8, cpticks=4, pctcpu=1.89 user=0, sys=3, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 9987 427807 64751 32767 2 0x10 syz-executor.0 9987 194162 64751 32767 7 0x4000010 syz-executor.0 509 212497 76300 32767 2 0x10 syz-executor.4 509 511083 76300 32767 3 0x4000090 fsleep syz-executor.4 99128 172060 94036 32767 3 0x90 nanoslp syz-executor.2 99128 236515 94036 32767 3 0x4000090 netcon2 syz-executor.2 99128 38582 94036 32767 3 0x4000090 fsleep syz-executor.2 72014 420343 42937 32767 3 0x90 nanoslp syz-executor.3 72014 414709 42937 32767 3 0x4000090 fsleep syz-executor.3 72014 337793 42937 32767 3 0x4000090 netcon2 syz-executor.3 72014 510855 42937 32767 3 0x4000090 fsleep syz-executor.3 78204 246664 57104 32767 3 0x90 nanoslp syz-executor.7 78204 374213 57104 32767 3 0x4000090 netcon2 syz-executor.7 78204 335564 57104 32767 3 0x4000090 netcon2 syz-executor.7 78204 43639 57104 32767 3 0x4000090 fsleep syz-executor.7 64751 373771 27841 32767 3 0x90 nanoslp syz-executor.0 27841 319341 64099 0 3 0x82 wait syz-executor.0 924 208601 61600 32767 3 0x90 nanoslp syz-executor.6 61600 239346 64099 0 3 0x82 wait syz-executor.6 76300 61743 63260 32767 3 0x90 nanoslp syz-executor.4 63260 332531 64099 0 3 0x82 wait syz-executor.4 94036 228144 94674 32767 3 0x90 nanoslp syz-executor.2 94674 406585 64099 0 3 0x82 wait syz-executor.2 73780 307792 48943 32767 3 0x90 nanoslp syz-executor.1 48943 379474 64099 0 3 0x82 wait syz-executor.1 57104 362183 6718 32767 3 0x90 nanoslp syz-executor.7 6718 351764 64099 0 3 0x82 wait syz-executor.7 30591 159559 0 0 3 0x14200 bored sosplice 61832 428277 57345 32767 3 0x90 nanoslp syz-executor.5 57345 156694 64099 0 3 0x82 wait syz-executor.5 42937 309153 32780 32767 3 0x90 nanoslp syz-executor.3 32780 222924 64099 0 3 0x82 wait syz-executor.3 64099 58 29156 0 3 0x82 kqread syz-fuzzer 64099 206130 29156 0 3 0x4000082 thrsleep syz-fuzzer 64099 18921 29156 0 3 0x4000082 thrsleep syz-fuzzer 64099 221380 29156 0 3 0x4000082 thrsleep syz-fuzzer 64099 155448 29156 0 3 0x4000082 thrsleep syz-fuzzer 64099 205218 29156 0 3 0x4000082 thrsleep syz-fuzzer 64099 65982 29156 0 3 0x4000082 thrsleep syz-fuzzer 64099 317060 29156 0 3 0x4000082 thrsleep syz-fuzzer 64099 356890 29156 0 3 0x4000082 thrsleep syz-fuzzer 29156 373778 311 0 3 0x10008a sigsusp ksh 311 95576 23165 0 3 0x9a kqread sshd 83753 396773 1 0 3 0x100083 ttyin getty 23165 412391 1 0 3 0x88 kqread sshd 27534 243361 9088 73 3 0x1100090 kqread syslogd 9088 23666 1 0 3 0x100082 netio syslogd 76908 286970 1 0 3 0x100080 kqread resolvd 18402 98926 87991 77 3 0x100092 kqread dhcpleased 78573 257084 87991 77 3 0x100092 kqread dhcpleased 87991 181785 1 0 3 0x80 kqread dhcpleased 79649 40680 0 0 3 0x14200 bored smr 16872 146525 0 0 2 0x14200 zerothread 45197 376219 0 0 3 0x14200 aiodoned aiodoned 10686 188551 0 0 3 0x14200 syncer update 81179 343548 0 0 3 0x14200 cleaner cleaner *60102 12114 0 0 7 0x14200 reaper 13608 482158 0 0 3 0x14200 pgdaemon pagedaemon 46992 411941 0 0 3 0x14200 bored viomb 66654 472187 0 0 3 0x40014200 acpi0 acpi0 12361 146720 0 0 3 0x40014200 idle1 32725 501513 0 0 3 0x14200 bored softnet 80423 388806 0 0 3 0x14200 bored systqmp 84057 122832 0 0 3 0x14200 bored systq 65740 211450 0 0 3 0x40014200 bored softclock 61181 248008 0 0 3 0x40014200 idle0 1 45857 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex anonpl r = 0 (0xffffffff82a73458) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_put+0x8a sys/kern/subr_pool.c:799 #4 amap_wipeout+0x1b1 sys/uvm/uvm_amap.c:504 #5 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1599 #6 uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 #7 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 #8 reaper+0x18b sys/kern/kern_exit.c:457 #9 proc_trampoline+0x1c CPU 1: exclusive mutex &table->inpt_mtx r = 0 (0xffffffff829cb1d0) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 udp_input+0x7b0 #4 ip_deliver+0x322 sys/netinet/ip_input.c:657 #5 ip_ours+0x3ba sys/netinet/ip_input.c:616 #6 ip_input_if+0x2a1 #7 ipv4_input+0x48 sys/netinet/ip_input.c:242 #8 if_input_local+0x10e sys/net/if.c:774 #9 ip_output+0xb05 ip_mloopback sys/netinet/ip_output.c:1791 [inline] #9 ip_output+0xb05 sys/netinet/ip_output.c:332 #10 udp_output+0x58d sys/netinet/udp_usrreq.c:1011 #11 sosend+0x632 sys/kern/uipc_socket.c:582 #12 dofilewritev+0x19c sys/kern/sys_generic.c:381 #13 sys_write+0x83 sys/kern/sys_generic.c:301 #14 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #14 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #15 Xsyscall+0x128 Process 9987 (syz-executor.0) thread 0xffff800027abed20 (194162) exclusive rwlock netlock r = 0 (0xffffffff828ee470) #0 witness_lock+0x44d #1 solock+0x86 sys/kern/uipc_socket2.c:295 #2 sosend+0x517 sys/kern/uipc_socket.c:570 #3 dofilewritev+0x19c sys/kern/sys_generic.c:381 #4 sys_write+0x83 sys/kern/sys_generic.c:301 #5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #6 Xsyscall+0x128 Process 60102 (reaper) thread 0xffff8000210f9a40 (12114) uvm_fault(0xffffffff82b6a868, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Faulted in DDB; continuing... ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10212 6412K 6419K 78643K 11346 0 pcb 13 16K 20K 78643K 19 0 rtable 264 7K 8K 78643K 1591 0 ifaddr 81 17K 17K 78643K 181 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 35K 78643K 84 0 ioctlops 0 0K 2K 78643K 170 0 iov 0 0K 28K 78643K 1467 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1271 79K 79K 78643K 3058 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 46 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1339 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 117K 78643K 9046 0 sigio 0 0K 0K 78643K 161 0 proc 59 87K 111K 78643K 1469 0 subproc 104 6K 6K 78643K 286 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 833 0 in_multi 99 6K 7K 78643K 325 0 ether_multi 1 0K 0K 78643K 21 0 mrt 2 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 289 1288K 1288K 78643K 289 0 exec 0 0K 2K 78643K 1961 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 459 93K 108K 78643K 119313 0 UVM aobj 131 6K 6K 78643K 133 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 330 0 NDP 11 0K 2K 78643K 69 0 temp 125 4711K 4775K 78643K 25447 0 kqueue 14 20K 26K 78643K 658 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 plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 881 0 878 12 11 1 3 0 8 0 rtentry 112 293 0 170 4 0 4 4 0 8 0 unpcb 136 7731 0 7718 64 63 1 6 0 8 0 syncache 296 94 0 94 15 15 0 1 0 8 0 tcpqe 32 60 0 60 10 10 0 1 0 8 0 tcpcb 736 14223 0 14094 250 238 12 30 0 8 0 arp 120 47 0 29 1 0 1 1 0 8 0 ipq 40 10 0 10 5 5 0 1 0 8 0 ipqe 40 177 0 177 5 5 0 1 0 8 0 inpcb 312 18646 0 18559 154 144 10 17 0 8 2 ip6q 72 8 0 7 3 2 1 1 0 8 0 ip6af 40 14 0 13 3 2 1 1 0 8 0 nd6 48 93 0 56 1 0 1 1 0 8 0 kcovpl 48 22 0 14 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1221 0 692 36 2 34 35 0 8 0 art_table 32 1222 0 692 5 0 5 5 0 8 0 art_node 16 292 0 179 1 0 1 1 0 8 0 sysvmsgpl 40 43 0 3 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 1337 0 1327 1 0 1 1 0 8 0 shmpl 112 130 0 2 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 13641 0 12194 91 0 91 91 0 8 0 ffsino 272 13641 0 12194 97 0 97 97 0 8 0 nchpl 144 25586 0 23956 62 0 62 62 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 85217 0 85217 3 2 1 2 0 8 1 percpumem 16 54 0 14 1 0 1 1 0 8 0 scxspl 216 76795 0 76795 33 30 3 8 0 8 3 plimitpl 152 1878 0 1856 6 5 1 2 0 8 0 sigapl 424 9295 0 9243 7 1 6 7 0 8 0 futexpl 64 79387 0 79382 2 1 1 1 0 8 0 knotepl 120 773 0 0 19 2 17 17 0 8 0 kqueuepl 216 2620 0 2609 45 44 1 8 0 8 0 pipepl 336 2054 0 2022 67 59 8 8 0 8 5 fdescpl 496 9280 0 9246 7 2 5 6 0 8 0 filepl 152 69563 0 69242 122 104 18 19 0 8 5 lockfpl 104 1188 0 1186 1 0 1 1 0 8 0 lockfspl 48 401 0 399 1 0 1 1 0 8 0 sessionpl 144 37 0 21 1 0 1 1 0 8 0 pgrppl 48 82 0 66 1 0 1 1 0 8 0 ucredpl 96 10387 0 10369 1 0 1 1 0 8 0 zombiepl 144 9246 0 9243 1 0 1 1 0 8 0 processpl 1064 9295 0 9243 5 1 4 4 0 8 0 procpl 672 28112 0 28041 22 14 8 8 0 8 0 sosppl 168 1432 0 1426 5 4 1 1 0 8 0 sockpl 480 27477 0 27374 513 497 16 30 0 8 1 mcl64k 65536 36 0 0 4 1 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 41 0 0 2 0 2 2 0 8 0 mcl9k 9216 19 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 4 1 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 201 0 0 19 1 18 19 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 810 0 0 32 1 31 31 0 8 0 bufpl 288 18481 0 12146 453 0 453 453 0 8 0 anonpl 24 2742109 0 2727169 284 179 105 120 0 186 0 amapchunkpl 152 291536 0 290734 116 81 35 48 0 158 0 amappl16 200 29071 0 28677 151 129 22 34 0 8 0 amappl15 192 2723 0 2712 1 0 1 1 0 8 0 amappl14 184 384 0 381 1 0 1 1 0 8 0 amappl13 176 1147 0 1143 1 0 1 1 0 8 0 amappl12 168 174 0 171 1 0 1 1 0 8 0 amappl11 160 994 0 980 1 0 1 1 0 8 0 amappl10 152 1456 0 1442 1 0 1 1 0 8 0 amappl9 144 2838 0 2833 1 0 1 1 0 8 0 amappl8 136 1417 0 1233 7 0 7 7 0 8 0 amappl7 128 183 0 171 1 0 1 1 0 8 0 amappl6 120 2627 0 2601 2 1 1 2 0 8 0 amappl5 112 9828 0 9802 1 0 1 1 0 8 0 amappl4 104 2257 0 2226 2 0 2 2 0 8 0 amappl3 96 1913 0 1898 1 0 1 1 0 8 0 amappl2 88 2146 0 2095 3 1 2 3 0 8 0 amappl1 80 170865 0 170217 20 5 15 18 0 8 0 amappl 88 118208 0 117929 9 1 8 8 0 92 1 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 72 132 0 2 3 0 3 3 0 8 0 uaddrrnd 24 9280 0 9245 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9280 0 9245 1 0 1 1 0 8 0 vmmpekpl 168 80916 0 80859 3 0 3 3 0 8 0 vmmpepl 168 858614 0 855807 261 129 132 145 0 357 1 vmsppl 368 9279 0 9245 4 0 4 4 0 8 0 rwobjpl 56 219181 0 211633 117 6 111 111 0 8 0 pdppl 4096 18567 0 18490 265 184 81 91 0 8 4 pvpl 32 4566409 0 4545872 507 314 193 248 0 265 15 pmappl 248 9279 0 9245 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1492 0 635 26 0 26 26 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8258e8f2) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82601511,ffffffff826271db,aae,ffffffff825bd978) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_map_teardown(fffffd8068248b98) at uvm_map_teardown+0x2e8 sys/uvm/uvm_map.c:2736 uvmspace_free(fffffd8068248b98) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9a40) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) 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 x86_bus_space_io_write_1(3f8,0,26) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,26) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,26) at comcnputc+0x128 sys/dev/ic/com.c:1263 cnputc(26) at cnputc+0x4b sys/dev/cons.c:239 db_putchar(26) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068 db_printf(ffffffff82607594) at db_printf+0x85 sys/kern/subr_prf.c:502 panic(ffffffff825a183e) at panic+0xd7 sys/kern/subr_prf.c:220 witness_checkorder(ffffffff82a73908,9,0) at witness_checkorder+0x116d sys/kern/subr_witness.c:833 __mp_lock(ffffffff82a73700) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff82a73700) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff82a73700) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 selwakeup(fffffd8067a64308) at selwakeup+0x16 klist_empty sys/sys/event.h:361 [inline] selwakeup(fffffd8067a64308) at selwakeup+0x16 sys/kern/sys_generic.c:885 sorwakeup(fffffd8067a641f0) at sorwakeup+0xc9 sys/kern/uipc_socket.c:1699 end trace frame: 0xffff80002c7558e0, count: 0 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) 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 x86_bus_space_io_write_1(3f8,0,26) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,26) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,26) at comcnputc+0x128 sys/dev/ic/com.c:1263 cnputc(26) at cnputc+0x4b sys/dev/cons.c:239 db_putchar(26) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068 db_printf(ffffffff82607594) at db_printf+0x85 sys/kern/subr_prf.c:502 panic(ffffffff825a183e) at panic+0xd7 sys/kern/subr_prf.c:220 witness_checkorder(ffffffff82a73908,9,0) at witness_checkorder+0x116d sys/kern/subr_witness.c:833 __mp_lock(ffffffff82a73700) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff82a73700) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff82a73700) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 selwakeup(fffffd8067a64308) at selwakeup+0x16 klist_empty sys/sys/event.h:361 [inline] selwakeup(fffffd8067a64308) at selwakeup+0x16 sys/kern/sys_generic.c:885 sorwakeup(fffffd8067a641f0) at sorwakeup+0xc9 sys/kern/uipc_socket.c:1699 udp_sbappend(fffffd80682263b0,fffffd806ef6be00,fffffd807977f2b0,0,14,fffffd807977f2c4,833998a20bbebd1,0) at udp_sbappend+0x3b1 sys/netinet/udp_usrreq.c:638 udp_input(ffff80002c755bd8,ffff80002c755be4,11,2) at udp_input+0xbcb sys/netinet/udp_usrreq.c:427 ip_deliver(ffff80002c755bd8,ffff80002c755be4,11,2) at ip_deliver+0x322 sys/netinet/ip_input.c:657 ip_ours(ffff80002c755bd8,ffff80002c755be4,ffff800021233000,0) at ip_ours+0x3ba sys/netinet/ip_input.c:616 ip_input_if(ffff80002c755bd8,ffff80002c755be4,4,0,ffff800000689000) at ip_input_if+0x2a1 ipv4_input(ffff800000689000,fffffd807977f200) at ipv4_input+0x48 sys/netinet/ip_input.c:242 if_input_local(ffff800000689000,fffffd807977f200,2) at if_input_local+0x10e sys/net/if.c:774 ip_output(fffffd805bfedc00,0,fffffd8068226560,0,0,fffffd80682264e8,be27a64ab3c6c3a1) at ip_output+0xb05 ip_mloopback sys/netinet/ip_output.c:1791 [inline] ip_output(fffffd805bfedc00,0,fffffd8068226560,0,0,fffffd80682264e8,be27a64ab3c6c3a1) at ip_output+0xb05 sys/netinet/ip_output.c:332 udp_output(fffffd80682264e8,fffffd805bfedc00,0,0) at udp_output+0x58d sys/netinet/udp_usrreq.c:1011 sosend(fffffd8067a643d0,0,ffff80002c755fe8,0,0,0) at sosend+0x632 sys/kern/uipc_socket.c:582 dofilewritev(ffff800027abed20,4,ffff80002c755fe8,0,ffff80002c7560e0) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_write(ffff800027abed20,ffff80002c756088,ffff80002c7560e0) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff80002c756150) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002c756150) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9d8633d53f0, count: -28