uvm_fault(0xffffffff827b2b20, 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(0xffffffff827b2b20, 0xfffffd000000001c, 0, 1) -> e m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 end trace frame: 0xffff8000225bf590, count: 0 ddb{1}> trace m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 ml_purge(ffff8000225bf5a8) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline] ml_purge(ffff8000225bf5a8) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628 ifq_purge(ffff800000af5278) at ifq_purge+0x9a sys/net/ifq.c:529 if_down(ffff800000af5000) at if_down+0x9c if_linkstate sys/net/if.c:1668 [inline] if_down(ffff800000af5000) at if_down+0x9c sys/net/if.c:1619 if_setrdomain(ffff800000af5000,18) at if_setrdomain+0x17c sys/net/if.c:1871 ifioctl(fffffd806f686640,8020699f,ffff8000225bf7e0,ffff800020edb790) at ifioctl+0x16ad sys/net/if.c:2139 soo_ioctl(fffffd80677eec90,8020699f,ffff8000225bf7e0,ffff800020edb790) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020edb790,ffff8000225bf8f8,ffff8000225bf940) at sys_ioctl+0x4a5 syscall(ffff8000225bf9c0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000225bf9c0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd4396ba730, count: -10 ddb{1}> show registers rdi 0x7 rsi 0x44581 acpi_pdirpa+0x303e9 rbp 0xffff8000225bf550 rbx 0x1 rdx 0x44580 acpi_pdirpa+0x303e8 rcx 0xffff800000676d80 rax 0x7 r8 0xffffffff8224e77c ifioctl+0x135c r9 0x5 r10 0xe4f2d143ea43be06 r11 0xe01f7c73268352bd r12 0xfffffd8064221000 r13 0x3 r14 0xfffffd0000000000 r15 0xfffffd0000000000 rip 0xffffffff81d91c98 m_free+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000225bf510 ss 0x10 m_free+0x58: movswq 0x1c(%r14),%rsi ddb{1}> show proc PROC (syz-executor.1) pid=415322 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020edb2b0,0xffffffff828b4578 process=0xffff800021f66410 user=0xffff8000225ba000, vmspace=0xfffffd8067e96010 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 69663 434264 17340 0 2 0 syz-executor.1 *69663 415322 17340 0 7 0x4000000 syz-executor.1 3230 449956 60771 0 3 0x82 nanosleep syz-executor.0 31500 267296 0 0 3 0x14280 nfsidl nfsio 88109 103244 0 0 3 0x14280 nfsidl nfsio 21406 152590 0 0 3 0x14280 nfsidl nfsio 59319 180964 0 0 3 0x14280 nfsidl nfsio 84297 277043 0 0 3 0x14280 nfsidl nfsio 46586 164648 0 0 3 0x14280 nfsidl nfsio 71728 462722 0 0 3 0x14280 nfsidl nfsio 20497 172716 0 0 3 0x14280 nfsidl nfsio 45552 111690 0 0 3 0x14280 nfsidl nfsio 17752 32336 0 0 3 0x14280 nfsidl nfsio 74036 516997 0 0 3 0x14280 nfsidl nfsio 55771 419197 0 0 3 0x14280 nfsidl nfsio 40378 464074 0 0 3 0x14280 nfsidl nfsio 20448 255389 0 0 3 0x14280 nfsidl nfsio 86966 230794 0 0 3 0x14280 nfsidl nfsio 66410 317034 0 0 3 0x14280 nfsidl nfsio 58653 221217 0 0 3 0x14280 nfsidl nfsio 84469 452513 0 0 3 0x14280 nfsidl nfsio 87778 522951 0 0 3 0x14280 nfsidl nfsio 70888 164167 0 0 3 0x14280 nfsidl nfsio 33634 163263 0 0 3 0x14200 bored sosplice 17340 434142 60771 0 3 0x82 nanosleep syz-executor.1 60771 88188 81785 0 3 0x82 thrsleep syz-fuzzer 60771 115501 81785 0 3 0x4000082 thrsleep syz-fuzzer 60771 387440 81785 0 3 0x4000082 thrsleep syz-fuzzer 60771 4192 81785 0 3 0x4000082 thrsleep syz-fuzzer 60771 517842 81785 0 3 0x4000082 thrsleep syz-fuzzer 60771 26305 81785 0 3 0x4000082 kqread syz-fuzzer 60771 496120 81785 0 3 0x4000082 thrsleep syz-fuzzer 60771 263929 81785 0 3 0x4000082 thrsleep syz-fuzzer 60771 225349 81785 0 3 0x4000082 thrsleep syz-fuzzer 60771 181692 81785 0 3 0x4000082 thrsleep syz-fuzzer 81785 138357 29014 0 3 0x10008a pause ksh 29014 287571 55893 0 3 0x92 select sshd 60773 465542 1 0 3 0x100083 ttyin getty 55893 245288 1 0 3 0x80 select sshd 45507 177320 93816 74 3 0x100092 bpf pflogd 93816 492715 1 0 3 0x80 netio pflogd 49383 124585 80870 73 3 0x100090 kqread syslogd 80870 16486 1 0 3 0x100082 netio syslogd 78866 190461 1 77 7 0x100090 dhclient 92019 176888 1 0 3 0x80 poll dhclient 45346 340597 0 0 3 0x14200 bored smr 42473 308512 0 0 3 0x14200 pgzero zerothread 97109 34692 0 0 3 0x14200 aiodoned aiodoned 97240 395999 0 0 3 0x14200 syncer update 64610 48404 0 0 3 0x14200 cleaner cleaner 42853 114808 0 0 3 0x14200 reaper reaper 47690 37769 0 0 3 0x14200 pgdaemon pagedaemon 20343 167998 0 0 3 0x14200 bored crynlk 25355 264244 0 0 3 0x14200 bored crypto 12823 282373 0 0 3 0x40014200 acpi0 acpi0 84409 516572 0 0 3 0x40014200 idle1 65794 19908 0 0 3 0x14200 bored softnet 96692 34689 0 0 3 0x14200 bored systqmp 29078 513752 0 0 3 0x14200 bored systq 15974 393793 0 0 3 0x40014200 bored softclock 34646 66819 0 0 3 0x40014200 idle0 1 405259 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 69663 (syz-executor.1) thread 0xffff800020edb790 (415322) exclusive rwlock netlock r = 0 (0xffffffff827a4e48) #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 (0xffffffff828dfd48) #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 9556 6438K 7310K 78643K 14210 0 pcb 14 8K 8K 78643K 177 0 rtable 118 9K 11K 78643K 954 0 ifaddr 108 20K 21K 78643K 334 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 107 0 ioctlops 0 0K 4K 78643K 1649 0 iov 0 0K 16K 78643K 138 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 2197 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 203 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 949 0 sigio 0 0K 0K 78643K 9 0 proc 62 63K 95K 78643K 565 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 73 0 in_multi 96 4K 4K 78643K 251 0 ether_multi 1 0K 0K 78643K 23 0 mrt 0 0K 0K 78643K 8 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 293 0 pfkey data 0 0K 0K 78643K 1 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 151 121K 121K 78643K 4190 0 UVM aobj 32 2K 2K 78643K 33 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 94 0 NDP 17 0K 0K 78643K 71 0 temp 154 3873K 3937K 78643K 29169 0 kqueue 3 4K 10K 78643K 44 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 19 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 91 0 89 1 0 1 1 0 8 0 rtentry 112 131 0 94 2 0 2 2 0 8 0 unpcb 120 787 0 777 1 0 1 1 0 8 0 syncache 264 12 0 12 5 4 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 151 0 151 2 1 1 1 0 8 1 tcpcb 544 333 0 329 2 1 1 2 0 8 0 inpcb 296 1814 0 1795 5 2 3 3 0 8 1 rttmr 72 2 0 2 2 2 0 1 0 8 0 nd6 48 32 0 30 1 0 1 1 0 8 0 pkpcb 40 7 0 7 2 2 0 1 0 8 0 ppxss 1128 5 0 5 4 3 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 11 0 9 3 2 1 1 0 482 0 pffrnode 88 11 0 9 3 2 1 1 0 8 0 pffrent 40 354 0 319 3 2 1 1 0 8 0 pfosfp 40 847 0 423 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 138 0 129 6 4 2 2 0 8 1 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 32 0 30 1 0 1 1 0 8 0 pfstkey 112 34 0 32 1 0 1 1 0 8 0 pfstate 328 32 0 30 3 2 1 3 0 8 0 pfrule 1360 56 0 45 3 1 2 2 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 677 0 510 19 6 13 15 0 8 1 art_table 32 678 0 510 2 0 2 2 0 8 0 art_node 16 128 0 95 1 0 1 1 0 8 0 sysvmsgpl 40 54 0 22 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 194 0 184 1 0 1 1 0 8 0 shmpl 112 30 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2647 0 1244 89 0 89 89 0 8 0 ffsino 272 2647 0 1244 96 1 95 95 0 8 0 nchpl 144 4140 0 2544 60 0 60 60 0 8 0 uvmvnodes 72 3539 0 0 65 0 65 65 0 8 0 vnodes 208 3539 0 0 187 0 187 187 0 8 0 namei 1024 12222 0 12222 4 3 1 1 0 8 1 percpumem 16 64 0 32 1 0 1 1 0 8 0 vcpupl 1984 9 0 0 2 0 2 2 0 8 0 vmpool 560 18 0 9 1 0 1 1 0 8 0 pfiaddrpl 120 48 0 40 1 0 1 1 0 8 0 scxspl 192 12158 0 12158 15 14 1 7 0 8 1 plimitpl 152 111 0 103 1 0 1 1 0 8 0 sigapl 424 1179 0 1127 6 0 6 6 0 8 0 futexpl 56 16190 0 16190 4 3 1 1 0 8 1 knotepl 112 134 0 115 1 0 1 1 0 8 0 kqueuepl 144 149 0 147 1 0 1 1 0 8 0 pipepl 304 202 0 192 6 5 1 2 0 8 0 fdescpl 496 1143 0 1127 3 0 3 3 0 8 0 filepl 152 7691 0 7589 8 3 5 6 0 8 1 lockfpl 104 245 0 244 1 0 1 1 0 8 0 lockfspl 48 73 0 72 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 30 0 19 1 0 1 1 0 8 0 ucredpl 96 704 0 695 1 0 1 1 0 8 0 zombiepl 144 1127 0 1126 1 0 1 1 0 8 0 processpl 992 1179 0 1126 7 0 7 7 0 8 0 procpl 624 3300 0 3237 9 3 6 6 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 18 0 18 5 4 1 1 0 8 1 sockpl 400 2702 0 2682 11 7 4 5 0 8 2 mcl64k 65536 20 0 0 3 0 3 3 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 168 0 0 20 0 20 20 0 8 0 mtagpl 96 272 0 0 7 0 7 7 0 8 0 mbufpl 256 969 0 0 58 0 58 58 0 8 0 bufpl 280 5025 0 137 350 0 350 350 0 8 0 anonpl 16 118168 0 100997 95 15 80 85 0 124 9 amapchunkpl 152 7252 0 7094 32 24 8 20 0 158 0 amappl16 192 5436 0 4486 68 13 55 60 0 8 7 amappl15 184 9 0 8 1 0 1 1 0 8 0 amappl14 176 22 0 19 1 0 1 1 0 8 0 amappl13 168 58 0 54 1 0 1 1 0 8 0 amappl12 160 23 0 18 1 0 1 1 0 8 0 amappl11 152 525 0 507 1 0 1 1 0 8 0 amappl10 144 395 0 388 1 0 1 1 0 8 0 amappl9 136 440 0 438 1 0 1 1 0 8 0 amappl8 128 452 0 416 2 0 2 2 0 8 0 amappl7 120 502 0 489 1 0 1 1 0 8 0 amappl6 112 481 0 477 1 0 1 1 0 8 0 amappl5 104 1041 0 1025 1 0 1 1 0 8 0 amappl4 96 515 0 486 1 0 1 1 0 8 0 amappl3 88 132 0 127 1 0 1 1 0 8 0 amappl2 80 8082 0 8010 2 0 2 2 0 8 0 amappl1 72 34799 0 34356 23 13 10 18 0 8 0 amappl 80 3582 0 3528 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 32 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1161 0 1136 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1161 0 1136 1 0 1 1 0 8 0 vmmpekpl 168 12079 0 12023 3 0 3 3 0 8 0 vmmpepl 168 147493 0 145360 168 64 104 129 0 357 5 vmsppl 368 1160 0 1136 3 0 3 3 0 8 0 pdppl 4096 2329 0 2281 7 0 7 7 0 8 0 pvpl 32 358572 0 338169 226 36 190 204 0 265 21 pmappl 232 1160 0 1136 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 334 0 24 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82797ff0) 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 __sanitizer_cov_trace_cmp4(e7cbb,e7cbc) at __sanitizer_cov_trace_cmp4+0x44 kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_cmp4(e7cbb,e7cbc) at __sanitizer_cov_trace_cmp4+0x44 trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(e7cbb,e7cbc) at __sanitizer_cov_trace_cmp4+0x44 sys/dev/kcov.c:135 __mp_lock(ffffffff828dfb40) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828dfb40) at __mp_lock+0x139 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828dfb40,2) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020e18320,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e18320,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e18320,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff828d41ec,118,ffffffff824628cc,ccccc78) at tsleep+0x1cc sys/kern/kern_synch.c:155 doppoll(ffff800020ddc4e8,7f7fffff9210,3,ffff800020e184b8,0,ffff800020e18570) at doppoll+0x57e sys/kern/sys_generic.c:968 sys_poll(ffff800020ddc4e8,ffff800020e18520,ffff800020e18570) at sys_poll+0xa6 syscall(ffff800020e185f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e185f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff91f0, count: -14 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(ffff8000225bf5a8) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline] ml_purge(ffff8000225bf5a8) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628 ifq_purge(ffff800000af5278) at ifq_purge+0x9a sys/net/ifq.c:529 if_down(ffff800000af5000) at if_down+0x9c if_linkstate sys/net/if.c:1668 [inline] if_down(ffff800000af5000) at if_down+0x9c sys/net/if.c:1619 if_setrdomain(ffff800000af5000,18) at if_setrdomain+0x17c sys/net/if.c:1871 ifioctl(fffffd806f686640,8020699f,ffff8000225bf7e0,ffff800020edb790) at ifioctl+0x16ad sys/net/if.c:2139 soo_ioctl(fffffd80677eec90,8020699f,ffff8000225bf7e0,ffff800020edb790) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020edb790,ffff8000225bf8f8,ffff8000225bf940) at sys_ioctl+0x4a5 syscall(ffff8000225bf9c0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000225bf9c0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd4396ba730, count: -10