kernel: protection fault trap, code=0 Stopped at pool_do_put+0x115: movq 0x8(%rbx),%rbx ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace pool_do_put(ffffffff82d778d0,fffffd806d9913e8) at pool_do_put+0x115 pool_put(ffffffff82d778d0,fffffd806d9913e8) at pool_put+0x8f sys/kern/subr_pool.c:799 soclose(fffffd806d9913e8,0) at soclose+0x4ba sys/kern/uipc_socket.c:440 fifo_close(ffff80002e1fb370) at fifo_close+0x14b sys/miscfs/fifofs/fifo_vnops.c:356 VOP_CLOSE(fffffd8063d4d870,1,fffffd807f7d76e8,ffff800021236dc0) at VOP_CLOSE+0xe4 sys/kern/vfs_vops.c:156 fifo_open(ffff80002e1fb468) at fifo_open+0x406 sys/miscfs/fifofs/fifo_vnops.c:230 VOP_OPEN(fffffd8063d4d870,1,fffffd807f7d76e8,ffff800021236dc0) at VOP_OPEN+0x76 sys/kern/vfs_vops.c:138 vn_open(ffff80002e1fb6b8,1,0) at vn_open+0x452 sys/kern/vfs_vnops.c:177 doopenat(ffff800021236dc0,ffffff9c,20000100,0,0,ffff80002e1fb890) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126 syscall(ffff80002e1fb910) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e1fb910) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e558a99eb0, count: -11 ddb{0}> show registers rdi 0 rsi 0xfffffd806d9917b8 rbp 0xffff80002e1fb280 rbx 0xce39016e23485ce8 rdx 0 rcx 0xffff800021236dc0 rax 0xffffffff82c08ff0 cpu_info_full_primary+0x1ff0 r8 0 r9 0 r10 0x1f2fe96c1677e9d4 r11 0x2c6ae3543c122125 r12 0xfffffd806d9913e8 r13 0x63a55bc86b4e8b76 r14 0xffffffff82d778d0 socket_pool r15 0xfffffd806d991f90 rip 0xffffffff814aa405 pool_do_put+0x115 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff80002e1fb1d0 ss 0x10 pool_do_put+0x115: movq 0x8(%rbx),%rbx ddb{0}> show proc PROC (syz-executor.7) pid=125645 stat=onproc flags process=1000 proc=4080000 pri=24, usrpri=70, nice=20 forw=0xffffffffffffffff, list=0xffff8000212c98f8,0xffff800021237088 process=0xffff8000ffff8438 user=0xffff80002e1f6000, vmspace=0xfffffd80699873b8 estcpu=20, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 58115 367517 30473 0 2 0x81000 syz-executor.7 *58115 125645 30473 0 7 0x4081000 syz-executor.7 58115 457305 30473 0 3 0x4003000 suspend syz-executor.7 80555 139615 98244 0 3 0x1 kernel: protection fault trap, code=0 Faulted in DDB; continuing... ddb{0}> show all locks CPU 0: exclusive mutex sockpl r = 0 (0xffffffff82d778e0) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 pool_put+0x84 sys/kern/subr_pool.c:797 #4 soclose+0x4ba sys/kern/uipc_socket.c:440 #5 fifo_close+0x14b sys/miscfs/fifofs/fifo_vnops.c:356 #6 VOP_CLOSE+0xe4 sys/kern/vfs_vops.c:156 #7 fifo_open+0x406 sys/miscfs/fifofs/fifo_vnops.c:230 #8 VOP_OPEN+0x76 sys/kern/vfs_vops.c:138 #9 vn_open+0x452 sys/kern/vfs_vnops.c:177 #10 doopenat+0x26e sys/kern/vfs_syscalls.c:1126 #11 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #11 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #12 Xsyscall+0x128 Process 58115 (syz-executor.7) thread 0xffff800021236dc0 (125645) exclusive rrwlock inode r = 0 (0xfffffd806827ac50) #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 fifo_open+0x379 sys/miscfs/fifofs/fifo_vnops.c:214 #6 VOP_OPEN+0x76 sys/kern/vfs_vops.c:138 #7 vn_open+0x452 sys/kern/vfs_vnops.c:177 #8 doopenat+0x26e sys/kern/vfs_syscalls.c:1126 #9 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #9 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d43530) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x4e3 sys/kern/sched_bsd.c:431 #3 sleep_finish+0x198 sys/kern/kern_synch.c:414 #4 fifo_open+0x369 sys/miscfs/fifofs/fifo_vnops.c:211 #5 VOP_OPEN+0x76 sys/kern/vfs_vops.c:138 #6 vn_open+0x452 sys/kern/vfs_vnops.c:177 #7 doopenat+0x26e sys/kern/vfs_syscalls.c:1126 #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 exclusive mutex sockpl r = 0 (0xffffffff82d778e0) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 pool_put+0x84 sys/kern/subr_pool.c:797 #4 soclose+0x4ba sys/kern/uipc_socket.c:440 #5 fifo_close+0x14b sys/miscfs/fifofs/fifo_vnops.c:356 #6 VOP_CLOSE+0xe4 sys/kern/vfs_vops.c:156 #7 fifo_open+0x406 sys/miscfs/fifofs/fifo_vnops.c:230 #8 VOP_OPEN+0x76 sys/kern/vfs_vops.c:138 #9 vn_open+0x452 sys/kern/vfs_vnops.c:177 #10 doopenat+0x26e sys/kern/vfs_syscalls.c:1126 #11 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #11 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #12 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10227 6509K 6992K 78643K 14989 0 pcb 13 13K 15K 78643K 588 0 rtable 243 7K 7K 78643K 1876 0 pf 32 9K 10K 78643K 211 0 ifaddr 45 16K 16K 78643K 273 0 ifgroup 55 2K 2K 78643K 355 0 sysctl 3 1K 2K 78643K 4 0 counters 60 35K 36K 78643K 218 0 ioctlops 0 0K 4K 78643K 2293 0 iov 0 0K 36K 78643K 1650 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1458 91K 91K 78643K 14673 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 13K 78643K 155 0 VM map 2 1K 1K 78643K 2 0 sem 10 0K 0K 78643K 10 0 dirhash 90 16K 19K 78643K 27267 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 13 45K 97K 78643K 27060 0 sigio 0 0K 0K 78643K 1062 0 proc 70 91K 128K 78643K 2551 0 subproc 104 6K 7K 78643K 716 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 634 0 in_multi 99 7K 7K 78643K 794 0 ether_multi 1 0K 0K 78643K 20 0 mrt 1 0K 0K 78643K 11 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 253 1129K 1129K 78643K 253 0 exec 0 0K 1K 78643K 3982 0 pfkey data 0 0K 0K 78643K 4 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 569 106K 114K 78643K 253240 0 UVM aobj 131 4K 4K 78643K 152 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 361 0 NDP 12 0K 1K 78643K 201 0 temp 77 5880K 6006K 78643K 251118 0 kqueue 12 18K 44K 78643K 1226 0 SYN cache 2 16K 24K 78643K 3 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 120 253 0 250 1 0 1 1 0 8 0 rtentry 112 637 0 524 4 0 4 4 0 8 0 unpcb 144 9625 0 9609 115 114 1 10 0 8 0 syncache 296 145 0 145 24 24 0 1 0 8 0 tcpqe 32 627 0 627 17 17 0 1 0 8 0 tcpcb 808 3830 0 3826 135 134 1 9 0 8 0 arp 120 112 0 94 1 0 1 1 0 8 0 inpcb 368 6988 0 6981 190 188 2 14 0 8 1 nd6 136 173 0 146 1 0 1 1 0 8 0 pkpcb 40 27 0 27 7 6 1 1 0 8 1 kcovpl 48 55 0 47 1 0 1 1 0 8 0 ppxss 1256 13 0 13 6 6 0 1 0 8 0 pffrag 232 69 0 68 7 6 1 1 0 482 0 pffrnode 88 69 0 68 7 6 1 1 0 8 0 pffrent 40 173 0 172 7 6 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 1095 0 1092 1 0 1 1 0 8 0 pfstkey 128 1095 0 1092 2 1 1 2 0 8 0 pfstate 376 1095 0 1092 25 24 1 8 0 8 0 pfrule 1344 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 2569 0 2094 33 3 30 31 0 8 0 art_table 32 2570 0 2094 4 0 4 4 0 8 0 art_node 16 635 0 532 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 149 0 21 4 0 4 4 0 8 0 dirhash 1024 9102 0 9059 37 31 6 7 0 8 0 dino2pl 256 46215 0 44420 113 0 113 113 0 8 0 ffsino 272 46215 0 44420 120 0 120 120 0 8 0 nchpl 144 85304 0 84781 63 40 23 63 0 8 0 uvmvnodes 80 9610 0 0 197 0 197 197 0 8 0 vnodes 216 9610 0 0 534 0 534 534 0 8 0 namei 1024 284606 0 284603 21 20 1 2 0 8 0 percpumem 16 122 0 79 1 0 1 1 0 8 0 kstatmem 264 182 0 158 2 0 2 2 0 8 0 scxspl 216 225973 0 225973 37 36 1 8 1 8 1 plimitpl 152 1194 0 1177 1 0 1 1 0 8 0 sigapl 424 27291 0 27224 11 3 8 9 0 8 0 futexpl 64 197404 0 197402 10 9 1 1 0 8 0 knotepl 120 636 0 0 8 2 6 7 0 8 0 kqueuepl 216 2887 0 2879 37 36 1 5 0 8 0 pipepl 320 6274 0 6246 163 157 6 14 0 8 3 fdescpl 496 27252 0 27226 8 4 4 5 0 8 0 filepl 152 165772 0 165527 365 351 14 23 0 8 4 lockfpl 104 14501 0 14499 2 1 1 2 0 8 0 lockfspl 48 3866 0 3864 1 0 1 1 0 8 0 sessionpl 144 72 0 55 1 0 1 1 0 8 0 pgrppl 48 329 0 312 1 0 1 1 0 8 0 ucredpl 104 52735 0 52723 1 0 1 1 0 8 0 zombiepl 144 27227 0 27224 2 1 1 1 0 8 0 processpl 1072 27291 0 27224 5 0 5 5 0 8 0 procpl 696 68791 0 68703 72 62 10 11 0 8 0 srpgc 96 8 0 8 4 4 0 1 0 8 0 sosppl 168 152 0 152 14 14 0 1 0 8 0 sockpl 488 16932 0 16905 493 488 5 34 0 8 1 sockpl: pool(0xffffffff82d778d0:sockpl): free list modified: page 0xfffffd806d991000; item ordinal 1; addr 0xfffffd806d991201 (p 0xfffffd806d991000); offset 0x0=0xa63ef4d7bfaecaed pool(sockpl): free list modified: page 0xfffffd806d991000; item ordinal 1; addr 0xfffffd806d991201 (p 0xfffffd806d991000); offset 0x0=0xaddeafbe sockpl: pool(0xffffffff82d778d0:sockpl): page inconsistency: page 0xfffffd806d991000; item ordinal 2; addr 0xce39016e23485ce8 mcl64k 65536 33 0 0 4 1 3 3 0 8 0 mcl16k 16384 15 0 0 2 0 2 2 0 8 0 mcl12k 12288 25 0 0 3 1 2 2 0 8 0 mcl9k 9216 22 0 0 2 0 2 2 0 8 0 mcl8k 8192 38 0 0 3 1 2 3 0 8 0 mcl4k 4096 57 0 0 6 3 3 3 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 1477 0 0 38 22 16 36 0 8 0 mtagpl 96 96 0 0 3 0 3 3 0 8 0 mbufpl 256 2335 0 0 64 4 60 64 0 8 0 bufpl 288 48868 0 39256 688 1 687 687 0 8 0 anonpl 24 2279194 0 2265820 274 177 97 120 0 186 0 amapchunkpl 152 794267 0 793485 126 88 38 43 0 158 3 amappl16 200 42411 0 41942 190 164 26 39 0 8 0 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 315 0 293 3 1 2 2 0 8 0 amappl13 176 79 0 78 3 2 1 1 0 8 0 amappl12 168 28672 0 28639 5 3 2 3 0 8 0 amappl11 160 66 0 52 1 0 1 1 0 8 0 amappl10 152 89 0 75 2 1 1 1 0 8 0 amappl9 144 288 0 287 2 1 1 1 0 8 0 amappl8 136 1546 0 1223 13 1 12 12 0 8 0 amappl7 128 148 0 130 2 0 2 2 0 8 0 amappl6 120 773 0 733 6 4 2 2 0 8 0 amappl5 112 720 0 709 1 0 1 1 0 8 0 amappl4 104 1144 0 1091 2 0 2 2 0 8 0 amappl3 96 158101 0 158031 5 2 3 4 0 8 0 amappl2 88 28105 0 28021 4 2 2 3 0 8 0 amappl1 80 105157 0 104606 25 11 14 23 0 8 0 amappl 88 251877 0 251629 9 2 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 72 151 0 21 3 0 3 3 0 8 0 uaddrrnd 24 27252 0 27226 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 27252 0 27226 1 0 1 1 0 8 0 vmmpekpl 168 192056 0 191981 4 0 4 4 0 8 0 vmmpepl 168 1567878 0 1565274 565 435 130 165 0 357 0 vmsppl 464 27251 0 27226 6 2 4 5 0 8 0 rwobjpl 56 356923 0 345359 182 16 166 166 0 8 0 pdppl 4096 54511 0 54452 1565 1496 69 85 0 8 10 pvpl 32 7214518 0 7195035 599 421 178 339 0 265 0 pmappl 248 27251 0 27226 4 2 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3029 0 1912 33 0 33 33 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pool_do_put(ffffffff82d778d0,fffffd806d9913e8) at pool_do_put+0x115 pool_put(ffffffff82d778d0,fffffd806d9913e8) at pool_put+0x8f sys/kern/subr_pool.c:799 soclose(fffffd806d9913e8,0) at soclose+0x4ba sys/kern/uipc_socket.c:440 fifo_close(ffff80002e1fb370) at fifo_close+0x14b sys/miscfs/fifofs/fifo_vnops.c:356 VOP_CLOSE(fffffd8063d4d870,1,fffffd807f7d76e8,ffff800021236dc0) at VOP_CLOSE+0xe4 sys/kern/vfs_vops.c:156 fifo_open(ffff80002e1fb468) at fifo_open+0x406 sys/miscfs/fifofs/fifo_vnops.c:230 VOP_OPEN(fffffd8063d4d870,1,fffffd807f7d76e8,ffff800021236dc0) at VOP_OPEN+0x76 sys/kern/vfs_vops.c:138 vn_open(ffff80002e1fb6b8,1,0) at vn_open+0x452 sys/kern/vfs_vnops.c:177 doopenat(ffff800021236dc0,ffffff9c,20000100,0,0,ffff80002e1fb890) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126 syscall(ffff80002e1fb910) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e1fb910) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e558a99eb0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d58ff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d58ff0) at sched_idle+0x41e sys/kern/kern_sched.c:199 end trace frame: 0x0, count: -5