uvm_fault(0xffffffff827b97b0, 0xfffffd000000001c, 0, 1) -> e kernel: page fault trap, code=0 Stopped at m_free+0x58: movswq 0x1c(%r14),%rsi ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff827b97b0, 0xfffffd000000001c, 0, 1) -> e m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 end trace frame: 0xffff800023fbcb20, count: 0 ddb{1}> trace m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 ml_purge(ffff800023fbcb38) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline] ml_purge(ffff800023fbcb38) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628 ifq_purge(ffff800000af9a78) at ifq_purge+0x9a sys/net/ifq.c:529 if_down(ffff800000af9800) at if_down+0x9c if_linkstate sys/net/if.c:1668 [inline] if_down(ffff800000af9800) at if_down+0x9c sys/net/if.c:1619 if_setrdomain(ffff800000af9800,a) at if_setrdomain+0x17c sys/net/if.c:1871 ifioctl(fffffd806ca1ac90,8020699f,ffff800023fbcd70,ffff800020ea39e8) at ifioctl+0x16ad sys/net/if.c:2139 soo_ioctl(fffffd80666f60b0,8020699f,ffff800023fbcd70,ffff800020ea39e8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020ea39e8,ffff800023fbce88,ffff800023fbced0) at sys_ioctl+0x4a5 syscall(ffff800023fbcf50) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023fbcf50) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2429542e140, count: -10 ddb{1}> show registers rdi 0x7 rsi 0x36b01 acpi_pdirpa+0x22969 rbp 0xffff800023fbcae0 rbx 0x1 rdx 0x36b00 acpi_pdirpa+0x22968 rcx 0xffff800000676d80 rax 0x7 r8 0xffffffff81c95f4c ifioctl+0x135c r9 0x5 r10 0x9c817a895c543eed r11 0x8f90e1f2c6682041 r12 0xfffffd8063ffbc00 r13 0x3 r14 0xfffffd0000000000 r15 0xfffffd0000000000 rip 0xffffffff81a91338 m_free+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023fbcaa0 ss 0x10 m_free+0x58: movswq 0x1c(%r14),%rsi ddb{1}> show proc PROC (syz-executor.0) pid=400269 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020ea3508,0xffffffff828ba3d8 process=0xffff800023f907f0 user=0xffff800023fb8000, vmspace=0xfffffd80645405d0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 18605 397239 58890 0 7 0 syz-executor.0 *18605 400269 58890 0 7 0x4000000 syz-executor.0 39503 275516 0 0 3 0x14280 nfsidl nfsio 31498 75184 0 0 3 0x14280 nfsidl nfsio 63697 476678 0 0 3 0x14280 nfsidl nfsio 81753 309785 0 0 3 0x14280 nfsidl nfsio 35177 2265 0 0 3 0x14280 nfsidl nfsio 14669 88151 0 0 3 0x14280 nfsidl nfsio 3166 499273 0 0 3 0x14280 nfsidl nfsio 77781 86517 0 0 3 0x14280 nfsidl nfsio 28872 362493 0 0 3 0x14280 nfsidl nfsio 52108 16370 0 0 3 0x14280 nfsidl nfsio 59210 456480 0 0 3 0x14280 nfsidl nfsio 16032 509485 0 0 3 0x14280 nfsidl nfsio 97696 452422 0 0 3 0x14280 nfsidl nfsio 5434 386037 0 0 3 0x14280 nfsidl nfsio 99451 480271 0 0 3 0x14280 nfsidl nfsio 45122 24422 0 0 3 0x14280 nfsidl nfsio 3787 41141 0 0 3 0x14280 nfsidl nfsio 12206 226392 0 0 3 0x14280 nfsidl nfsio 11352 247836 0 0 3 0x14280 nfsidl nfsio 69132 324028 0 0 3 0x14280 nfsidl nfsio 10567 317640 0 0 3 0x14200 bored sosplice 58890 521707 99595 0 3 0x82 nanosleep syz-executor.0 37030 253278 99595 0 3 0x82 nanosleep syz-executor.1 99595 125431 79457 0 3 0x82 kqread syz-fuzzer 99595 107200 79457 0 3 0x4000082 nanosleep syz-fuzzer 99595 108359 79457 0 3 0x4000082 thrsleep syz-fuzzer 99595 408114 79457 0 3 0x4000082 thrsleep syz-fuzzer 99595 462420 79457 0 3 0x4000082 thrsleep syz-fuzzer 99595 480291 79457 0 3 0x4000082 thrsleep syz-fuzzer 99595 345005 79457 0 3 0x4000082 thrsleep syz-fuzzer 99595 493059 79457 0 3 0x4000082 thrsleep syz-fuzzer 99595 405242 79457 0 3 0x4000082 thrsleep syz-fuzzer 99595 455891 79457 0 3 0x4000082 thrsleep syz-fuzzer 79457 226924 88548 0 3 0x10008a pause ksh 88548 319198 24508 0 3 0x92 select sshd 57050 343774 1 0 3 0x100083 ttyin getty 24508 505423 1 0 3 0x80 select sshd 82426 318702 36849 74 3 0x100092 bpf pflogd 36849 268078 1 0 3 0x80 netio pflogd 23241 133322 13959 73 3 0x100090 kqread syslogd 13959 445357 1 0 3 0x100082 netio syslogd 84900 104942 1 77 2 0x100090 dhclient 4003 310947 1 0 3 0x80 poll dhclient 13144 9807 0 0 3 0x14200 bored smr 13406 370255 0 0 3 0x14200 pgzero zerothread 37938 53725 0 0 3 0x14200 aiodoned aiodoned 3584 329831 0 0 3 0x14200 syncer update 74642 52911 0 0 3 0x14200 cleaner cleaner 54963 418751 0 0 3 0x14200 reaper reaper 18404 68327 0 0 3 0x14200 pgdaemon pagedaemon 18925 442393 0 0 3 0x14200 bored crynlk 18453 168487 0 0 3 0x14200 bored crypto 38469 229102 0 0 3 0x40014200 acpi0 acpi0 86411 302448 0 0 3 0x40014200 idle1 95445 237869 0 0 3 0x14200 bored softnet 32778 335399 0 0 3 0x14200 bored systqmp 79312 12950 0 0 3 0x14200 bored systq 8904 133652 0 0 3 0x40014200 bored softclock 46274 471544 0 0 3 0x40014200 idle0 1 170990 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 18605 (syz-executor.0) thread 0xffff800020ea39e8 (400269) exclusive rwlock netlock r = 0 (0xffffffff82753c68) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 ifioctl+0x16a0 sys/net/if.c:2139 #2 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #3 sys_ioctl+0x4a5 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828bb818) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 soo_ioctl+0x26a sys/kern/sys_socket.c:138 #2 sys_ioctl+0x4a5 #3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #4 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9552 6554K 7133K 78643K 13471 0 pcb 13 8K 8K 78643K 106 0 rtable 109 5K 7K 78643K 569 0 ifaddr 97 18K 18K 78643K 198 0 sysctl 1 1K 1K 78643K 1 0 counters 43 33K 34K 78643K 61 0 ioctlops 0 0K 4K 78643K 1804 0 iov 0 0K 32K 78643K 305 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1929 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 172 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 750 0 sigio 0 0K 0K 78643K 30 0 proc 62 63K 95K 78643K 541 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 59 0 in_multi 61 3K 3K 78643K 193 0 ether_multi 1 0K 0K 78643K 14 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 270 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 136 104K 104K 78643K 3409 0 UVM aobj 36 2K 2K 78643K 45 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 82 0 NDP 15 0K 0K 78643K 46 0 temp 133 3863K 3927K 78643K 14131 0 kqueue 3 4K 9K 78643K 18 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 arp 64 11 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 47 0 45 1 0 1 1 0 8 0 rtentry 112 98 0 56 2 0 2 2 0 8 0 unpcb 120 260 0 250 1 0 1 1 0 8 0 syncache 264 7 0 7 3 2 1 1 0 8 1 tcpqe 32 70 0 70 3 2 1 1 0 8 1 tcpcb 544 535 0 529 1 0 1 1 0 8 0 inpcb 296 1217 0 1203 3 1 2 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 28 0 24 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pfstscr 40 11 0 11 2 2 0 1 0 8 0 pffrag 232 6 0 6 3 3 0 1 0 482 0 pffrnode 88 6 0 6 3 3 0 1 0 8 0 pffrent 40 57 0 57 3 3 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 64 0 62 2 1 1 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 56 0 27 1 0 1 1 0 8 0 pfstkey 112 66 0 37 2 0 2 2 0 8 0 pfstate 328 59 0 30 5 0 5 5 0 8 0 pfrule 1360 39 0 29 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 294 0 111 12 0 12 12 0 8 0 art_table 32 295 0 111 2 0 2 2 0 8 0 art_node 16 97 0 59 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 8 1 0 1 1 0 8 0 semapl 112 170 0 160 1 0 1 1 0 8 0 shmpl 112 42 0 9 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2370 0 970 89 0 89 89 0 8 0 ffsino 272 2370 0 970 94 0 94 94 0 8 0 nchpl 144 3520 0 1923 60 0 60 60 0 8 0 uvmvnodes 72 3036 0 0 56 0 56 56 0 8 0 vnodes 208 3036 0 0 160 0 160 160 0 8 0 namei 1024 10309 0 10309 2 1 1 1 0 8 1 percpumem 16 41 0 9 1 0 1 1 0 8 0 vcpupl 1984 9 0 0 2 0 2 2 0 8 0 vmpool 560 9 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 18 0 18 4 4 0 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 10364 0 10364 9 8 1 7 0 8 1 plimitpl 152 47 0 39 1 0 1 1 0 8 0 sigapl 424 983 0 931 6 0 6 6 0 8 0 futexpl 56 11778 0 11778 1 0 1 1 0 8 1 knotepl 112 91 0 72 1 0 1 1 0 8 0 kqueuepl 144 91 0 87 1 0 1 1 0 8 0 pipepl 304 135 0 125 2 1 1 2 0 8 0 fdescpl 496 947 0 931 3 0 3 3 0 8 0 filepl 152 5608 0 5505 6 1 5 5 0 8 1 lockfpl 104 119 0 118 1 0 1 1 0 8 0 lockfspl 48 43 0 42 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 23 0 12 1 0 1 1 0 8 0 ucredpl 96 564 0 555 1 0 1 1 0 8 0 zombiepl 144 931 0 930 2 1 1 1 0 8 0 processpl 992 983 0 930 7 0 7 7 0 8 0 procpl 624 2594 0 2531 6 0 6 6 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 20 0 20 3 2 1 1 0 8 1 sockpl 400 1544 0 1521 4 0 4 4 0 8 1 mcl64k 65536 268 0 0 34 0 34 34 0 8 1 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 152 0 0 18 0 18 18 0 8 0 mtagpl 96 349 0 0 9 0 9 9 0 8 0 mbufpl 256 885 0 0 54 0 54 54 0 8 0 bufpl 280 4555 0 134 316 0 316 316 0 8 0 anonpl 16 102583 0 85477 95 9 86 86 0 124 15 amapchunkpl 152 5261 0 5100 10 2 8 8 0 158 1 amappl16 192 4415 0 3495 76 17 59 59 0 8 13 amappl15 184 390 0 387 1 0 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 35 0 32 1 0 1 1 0 8 0 amappl12 160 12 0 11 2 1 1 1 0 8 0 amappl11 152 61 0 46 1 0 1 1 0 8 0 amappl10 144 362 0 356 1 0 1 1 0 8 0 amappl9 136 704 0 700 1 0 1 1 0 8 0 amappl8 128 722 0 681 2 0 2 2 0 8 0 amappl7 120 124 0 111 1 0 1 1 0 8 0 amappl6 112 27 0 22 1 0 1 1 0 8 0 amappl5 104 863 0 845 1 0 1 1 0 8 0 amappl4 96 508 0 475 1 0 1 1 0 8 0 amappl3 88 138 0 132 1 0 1 1 0 8 0 amappl2 80 6944 0 6875 2 0 2 2 0 8 0 amappl1 72 29909 0 29469 23 13 10 18 0 8 0 amappl 80 2847 0 2798 2 0 2 2 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 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 64 44 0 9 1 0 1 1 0 8 0 uaddrrnd 24 956 0 931 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 956 0 931 1 0 1 1 0 8 0 vmmpekpl 168 10357 0 10311 3 0 3 3 0 8 0 vmmpepl 168 122052 0 119933 140 31 109 124 0 357 13 vmsppl 368 955 0 931 3 0 3 3 0 8 0 pdppl 4096 1919 0 1871 7 0 7 7 0 8 0 pvpl 32 307594 0 287551 217 11 206 206 0 265 42 pmappl 232 955 0 931 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 336 0 4 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff826ebff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828bb610) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828bb610) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7fffff0520, count: -6 ddb{0}> machine ddbcpu 1 Stopped at m_free+0x58: movswq 0x1c(%r14),%rsi ddb{1}> trace m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 ml_purge(ffff800023fbcb38) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline] ml_purge(ffff800023fbcb38) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628 ifq_purge(ffff800000af9a78) at ifq_purge+0x9a sys/net/ifq.c:529 if_down(ffff800000af9800) at if_down+0x9c if_linkstate sys/net/if.c:1668 [inline] if_down(ffff800000af9800) at if_down+0x9c sys/net/if.c:1619 if_setrdomain(ffff800000af9800,a) at if_setrdomain+0x17c sys/net/if.c:1871 ifioctl(fffffd806ca1ac90,8020699f,ffff800023fbcd70,ffff800020ea39e8) at ifioctl+0x16ad sys/net/if.c:2139 soo_ioctl(fffffd80666f60b0,8020699f,ffff800023fbcd70,ffff800020ea39e8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020ea39e8,ffff800023fbce88,ffff800023fbced0) at sys_ioctl+0x4a5 syscall(ffff800023fbcf50) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023fbcf50) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2429542e140, count: -10