^z8-ՂNm9vڳ0lξ} !45Y8U470seP̛| ԃQe- __ Gc\qY^z8-ՂNm9vڳ0lξ} !45Y8U470seP̛| ԃQe- __ Gc\qYwitness: lock order reversal: 1st 0xfffffd80679f24e8 inode (&ip->i_lock) 2nd 0xfffffd807cbcabd8 fdlock (&newfdp->fd_fd.fd_lock) lock order "&newfdp->fd_fd.fd_lock"(rwlock) -> "&ip->i_lock"(rrwlock) first seen at: #0 witness_checkorder+0x6a7 sys/kern/subr_witness.c:879 #1 rw_enter+0xd1 sys/kern/kern_rwlock.c:247 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602 #4 vn_closefile+0x119 vn_lock sys/kern/vfs_vnops.c:561 [inline] #4 vn_closefile+0x119 vn_close sys/kern/vfs_vnops.c:288 [inline] #4 vn_closefile+0x119 sys/kern/vfs_vnops.c:587 #5 fdrop+0xc9 sys/kern/kern_descrip.c:1273 #6 closef+0x11d sys/kern/kern_descrip.c:1257 #7 finishdup+0x2b6 sys/kern/kern_descrip.c:686 #8 dodup3+0x5c5 sys/kern/kern_descrip.c:377 #9 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #9 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #10 Xsyscall+0x128 lock order "&ip->i_lock"(rrwlock) -> "&newfdp->fd_fd.fd_lock"(rwlock) first seen at: #0 witness_checkorder+0x6a7 sys/kern/subr_witness.c:879 #1 rw_enter_write+0x5b sys/kern/kern_rwlock.c:125 #2 diskmapioctl+0x237 sys/dev/diskmap.c:106 #3 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290 #4 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:524 #5 sys_ioctl+0x5b8 #6 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #6 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #7 Xsyscall+0x128 Stopped at db_enter+0x18: 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+0x18 sys/arch/amd64/amd64/db_interface.c:398 witness_checkorder(fffffd807cbcabd8,9,0) at witness_checkorder+0xffc witness_debugger sys/kern/subr_witness.c:2506 [inline] witness_checkorder(fffffd807cbcabd8,9,0) at witness_checkorder+0xffc sys/kern/subr_witness.c:1086 rw_enter_write(fffffd807cbcabc8) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:125 diskmapioctl(5a00,c0106477,ffff800021970d70,1,ffff800020abe290) at diskmapioctl+0x237 sys/dev/diskmap.c:106 VOP_IOCTL(fffffd806fa720d0,c0106477,ffff800021970d70,1,fffffd807f7c6ae0,ffff800020abe290) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290 vn_ioctl(fffffd8067ca0900,c0106477,ffff800021970d70,ffff800020abe290) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:524 sys_ioctl(ffff800020abe290,ffff800021970e88,ffff800021970ef0) at sys_ioctl+0x5b8 syscall(ffff800021970f60) at syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021970f60) at syscall+0x552 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff1b,0,3,d3f1f204010) at Xsyscall+0x128 end of kernel end trace frame: 0xd4155ff2410, count: -9 ddb{1}> show registers rdi 0x3 rsi 0x3ffff acpi_pdirpa+0x2be67 rbp 0xffff800021970930 rbx 0x3 rdx 0x40000 acpi_pdirpa+0x2be68 rcx 0xffff800022d7a000 rax 0xffff800000a84e40 r8 0xffffffff81351515 witness_checkorder+0xfd5 r9 0x5 r10 0x3 r11 0xefe60f30c51165a2 r12 0xfffffd80029b2c00 r13 0 r14 0xffffffff825b2fb0 w_lodata+0x4ac40 r15 0xffffffff825bc900 w_lodata+0x54590 rip 0xffffffff813aceb8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021970920 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=202419 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff800020abe508,0xffff800020abe790 process=0xffff800020a8b190 user=0xffff80002196c000, vmspace=0xfffffd807f00c730 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 13131 235003 8274 0 3 0x80 nanosleep syz-executor.0 13131 294338 8274 0 3 0x4000080 fsleep syz-executor.0 13131 38414 8274 0 3 0x4000080 fsleep syz-executor.0 80517 489421 17421 0 2 0 syz-executor.1 *80517 202419 17421 0 7 0x4000000 syz-executor.1 80517 338594 17421 0 2 0x4000000 syz-executor.1 80517 271863 17421 0 7 0x4000000 syz-executor.1 97614 427667 0 0 3 0x14200 bored sosplice 16112 404803 1 0 3 0x100083 ttyin getty 88309 225281 0 0 3 0x14200 acct acct 17421 413008 29866 0 3 0x82 nanosleep syz-executor.1 8274 225170 29866 0 3 0x82 nanosleep syz-executor.0 29866 256353 82915 0 3 0x82 thrsleep syz-fuzzer 29866 4883 82915 0 3 0x4000082 thrsleep syz-fuzzer 29866 164603 82915 0 3 0x4000082 thrsleep syz-fuzzer 29866 521809 82915 0 3 0x4000082 thrsleep syz-fuzzer 29866 59046 82915 0 3 0x4000082 thrsleep syz-fuzzer 29866 251579 82915 0 3 0x4000082 kqread syz-fuzzer 29866 145503 82915 0 3 0x4000082 thrsleep syz-fuzzer 29866 222189 82915 0 3 0x4000082 thrsleep syz-fuzzer 29866 396763 82915 0 3 0x4000082 thrsleep syz-fuzzer 29866 484121 82915 0 3 0x4000082 thrsleep syz-fuzzer 82915 503161 50405 0 3 0x10008a pause ksh 50405 188198 53065 0 3 0x92 select sshd 53065 213183 1 0 3 0x80 select sshd 71765 433922 5686 74 3 0x100092 bpf pflogd 5686 487294 1 0 3 0x80 netio pflogd 67984 432865 94787 73 3 0x100090 kqread syslogd 94787 12777 1 0 3 0x100082 netio syslogd 26822 253683 1 77 3 0x100090 poll dhclient 33245 78708 1 0 3 0x80 poll dhclient 21750 200523 0 0 3 0x14200 pgzero zerothread 43232 111925 0 0 3 0x14200 aiodoned aiodoned 17311 1425 0 0 3 0x14200 syncer update 46721 469340 0 0 3 0x14200 cleaner cleaner 34097 501074 0 0 3 0x14200 reaper reaper 73186 451958 0 0 3 0x14200 pgdaemon pagedaemon 30798 297861 0 0 3 0x14200 bored crynlk 5844 88767 0 0 3 0x14200 bored crypto 39667 183403 0 0 3 0x40014200 acpi0 acpi0 44019 290117 0 0 3 0x40014200 idle1 32886 209377 0 0 3 0x14200 bored softnet 43165 262459 0 0 3 0x14200 bored systqmp 83153 193220 0 0 3 0x14200 bored systq 24540 246990 0 0 3 0x40014200 bored softclock 39875 376262 0 0 3 0x40014200 idle0 77233 300544 0 0 3 0x14200 bored smr 1 62342 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 80517 (syz-executor.1) thread 0xffff800020abe290 (202419) exclusive rrwlock inode r = 0 (0xfffffd80679f24e8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x46d sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602 #4 vn_lock+0x6e sys/kern/vfs_vnops.c:561 #5 spec_open+0x431 sys/kern/spec_vnops.c:159 #6 VOP_OPEN+0x6a sys/kern/vfs_vops.c:153 #7 vn_open+0x495 sys/kern/vfs_vnops.c:174 #8 diskmapioctl+0x18e sys/dev/diskmap.c:91 #9 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290 #10 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:524 #11 sys_ioctl+0x5b8 #12 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #12 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #13 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8264a400) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 #2 mi_switch+0x38f sys/kern/sched_bsd.c:441 #3 sleep_finish+0x113 sys/kern/kern_synch.c:373 #4 rw_enter+0x366 sys/kern/kern_rwlock.c:282 #5 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #6 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602 #7 vn_lock+0x6e sys/kern/vfs_vnops.c:561 #8 spec_open+0x431 sys/kern/spec_vnops.c:159 #9 VOP_OPEN+0x6a sys/kern/vfs_vops.c:153 #10 vn_open+0x495 sys/kern/vfs_vnops.c:174 #11 diskmapioctl+0x18e sys/dev/diskmap.c:91 #12 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290 #13 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:524 #14 sys_ioctl+0x5b8 #15 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #15 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #16 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9510 6400K 7488K 78643K 11588 0 0 pcb 13 8K 8K 78643K 39 0 0 rtable 108 4K 4K 78643K 256 0 0 ifaddr 56 13K 13K 78643K 79 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1487 0 0 iov 0 0K 16K 78643K 41 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1216 76K 77K 78643K 1540 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 3 5K 5K 78643K 4 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 32 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 329 0 0 proc 53 50K 83K 78643K 461 0 0 subproc 32 2K 2K 78643K 34 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 12 0 0 in_multi 33 2K 2K 78643K 36 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 48 212K 212K 78643K 48 0 0 exec 0 0K 1K 78643K 236 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 96 21K 30K 78643K 1960 0 0 UVM aobj 13 2K 2K 78643K 13 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 16 0 0 NDP 11 0K 0K 78643K 20 0 0 temp 130 3530K 4169K 78643K 6034 0 0 kqueue 0 0K 0K 78643K 2 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 0 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 45 0 1 2 0 2 2 0 8 0 unpcb 120 129 0 119 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 8841 0 8841 1 1 0 1 0 8 0 tcpcb 544 36 0 32 1 0 1 1 0 8 0 inpcb 280 146 0 139 1 0 1 1 0 8 0 nd6 48 6 0 0 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 ppxss 1128 5 0 5 1 0 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 19 0 7 1 0 1 1 0 8 0 pfstkey 112 19 0 7 1 0 1 1 0 8 0 pfstate 328 19 0 7 2 0 2 2 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 256 188 0 0 12 0 12 12 0 8 0 art_table 32 189 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 30 0 20 1 0 1 1 0 8 0 shmpl 112 11 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1930 0 505 47 0 47 47 0 8 0 ffsino 272 1930 0 505 96 0 96 96 0 8 0 nchpl 144 2594 0 944 62 0 62 62 0 8 0 uvmvnodes 72 2206 0 0 41 0 41 41 0 8 0 vnodes 200 2206 0 0 117 0 117 117 0 8 0 namei 1024 7379 0 7379 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 6880 0 6880 10 9 1 7 0 8 1 plimitpl 152 36 0 28 1 0 1 1 0 8 0 sigapl 432 530 0 514 3 1 2 3 0 8 0 futexpl 56 3937 0 3935 1 0 1 1 0 8 0 knotepl 112 117 0 98 1 0 1 1 0 8 0 kqueuepl 104 84 0 82 1 0 1 1 0 8 0 pipepl 112 344 0 325 1 0 1 1 0 8 0 fdescpl 488 531 0 514 3 0 3 3 0 8 0 filepl 152 2926 0 2821 6 1 5 5 0 8 0 lockfpl 104 146 0 146 2 1 1 1 0 8 1 lockfspl 48 53 0 53 2 1 1 1 0 8 1 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 371 0 362 1 0 1 1 0 8 0 zombiepl 144 514 0 514 2 1 1 1 0 8 1 processpl 896 548 0 514 4 0 4 4 0 8 0 procpl 632 1181 0 1133 6 1 5 5 0 8 1 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 384 317 0 298 4 1 3 3 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 194 0 0 23 0 23 23 0 8 0 mtagpl 80 12 0 0 1 0 1 1 0 8 0 mbufpl 256 234 0 0 13 0 13 13 0 8 0 bufpl 256 6271 0 1166 320 0 320 320 0 8 0 anonpl 16 69995 0 57602 69 2 67 67 0 124 16 amapchunkpl 152 2901 0 2782 12 2 10 10 0 158 4 amappl16 192 2713 0 2036 50 8 42 44 0 8 8 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 49 0 45 1 0 1 1 0 8 0 amappl13 168 160 0 157 1 0 1 1 0 8 0 amappl12 160 154 0 151 1 0 1 1 0 8 0 amappl11 152 62 0 47 1 0 1 1 0 8 0 amappl10 144 84 0 79 1 0 1 1 0 8 0 amappl9 136 610 0 606 1 0 1 1 0 8 0 amappl8 128 159 0 138 1 0 1 1 0 8 0 amappl7 120 38 0 33 1 0 1 1 0 8 0 amappl6 112 62 0 53 1 0 1 1 0 8 0 amappl5 104 274 0 259 1 0 1 1 0 8 0 amappl4 96 950 0 917 2 1 1 2 0 8 0 amappl3 88 188 0 177 1 0 1 1 0 8 0 amappl2 80 3328 0 3247 3 1 2 3 0 8 0 amappl1 72 21301 0 20840 26 16 10 20 0 8 0 amappl 80 1441 0 1398 1 0 1 1 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 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 12 0 0 1 0 1 1 0 8 0 uaddrrnd 24 531 0 514 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 531 0 514 1 0 1 1 0 8 0 vmmpekpl 168 7897 0 7861 2 0 2 2 0 8 0 vmmpepl 168 70870 0 68952 123 32 91 95 0 357 7 vmsppl 368 530 0 514 2 0 2 2 0 8 0 pdppl 4096 1069 0 1028 7 1 6 6 0 8 0 pvpl 32 205588 0 189951 181 19 162 162 0 265 35 pmappl 232 530 0 514 2 1 1 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 488 0 5 14 0 14 14 0 8 0