uvm_fault(0xffffffff827d8a30, 0xfffffd0000000008, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ml_purge+0x38: movq 0x8(%r12),%r12 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff827d8a30, 0xfffffd0000000008, 0, 1) -> e ml_purge(ffff800023107958) at ml_purge+0x38 sys/kern/uipc_mbuf.c:1627 end trace frame: 0xffff8000231079a0, count: 0 ddb{0}> trace ml_purge(ffff800023107958) at ml_purge+0x38 sys/kern/uipc_mbuf.c:1627 ifq_purge(ffff800000af1a78) at ifq_purge+0x9a sys/net/ifq.c:462 tun_dev_close(5d01,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460 spec_close(ffff800023107a80) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e3394e8,7,fffffd807f7bf660,ffff800020e084f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8066925d30,ffff800020e084f8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8066925d30,ffff800020e084f8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8066925d30,ffff800020e084f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8066925d30,ffff800020e084f8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e084f8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e084f8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020e084f8,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020e084f8,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020e084f8) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800023107f00) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800023107f00) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff7500, count: -14 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800023107940 rbx 0 rdx 0x63fb2 acpi_pdirpa+0x4fe1a rcx 0 rax 0 r8 0xffffffff8206ed57 witness_assert+0x207 r9 0x5 r10 0x659bd38607497cde r11 0xe2420913ce209e5e r12 0xfffffd0000000000 r13 0x2000 __ALIGN_SIZE+0x1000 r14 0xffff800023107958 r15 0xfffffd0000000000 rip 0xffffffff815aea88 ml_purge+0x38 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023107910 ss 0x10 ml_purge+0x38: movq 0x8(%r12),%r12 ddb{0}> show proc PROC (syz-executor.1) pid=504797 stat=onproc flags process=a proc=2000 pri=17, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddd868,0xffff800020e08778 process=0xffff800020df0f70 user=0xffff800023102000, vmspace=0xfffffd807efffb80 estcpu=36, cpticks=6, pctcpu=0.9 user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46479 521400 0 0 3 0x14200 bored sosplice 3570 182311 53695 0 2 0x482 syz-executor.0 53695 364739 69229 0 3 0x82 thrsleep syz-fuzzer 53695 329256 69229 0 2 0x4000482 syz-fuzzer 53695 33492 69229 0 3 0x4000082 thrsleep syz-fuzzer 53695 252972 69229 0 3 0x4000082 thrsleep syz-fuzzer 53695 162221 69229 0 2 0x4000482 syz-fuzzer 53695 282073 69229 0 3 0x4000082 thrsleep syz-fuzzer 53695 147892 69229 0 3 0x4000082 thrsleep syz-fuzzer 53695 134735 69229 0 3 0x4000082 thrsleep syz-fuzzer 53695 158419 69229 0 3 0x4000082 thrsleep syz-fuzzer 53695 190906 69229 0 3 0x4000082 thrsleep syz-fuzzer 53695 284685 69229 0 2 0x4000082 syz-fuzzer 69229 57619 3830 0 3 0x10008a pause ksh 3830 116372 28384 0 3 0x92 select sshd 26451 335821 1 0 3 0x100083 ttyin getty 28384 179388 1 0 3 0x80 select sshd 59214 163979 1518 74 3 0x100092 bpf pflogd 1518 161243 1 0 3 0x80 netio pflogd 73666 273177 48911 73 2 0x100090 syslogd 48911 96192 1 0 3 0x100082 netio syslogd 90452 296446 1 77 3 0x100090 poll dhclient 81755 302759 1 0 2 0x480 dhclient 7176 329980 0 0 3 0x14200 bored smr 55792 180048 0 0 2 0x14200 zerothread 52393 200565 0 0 3 0x14200 aiodoned aiodoned 72284 82614 0 0 3 0x14200 syncer update 89468 66385 0 0 3 0x14200 cleaner cleaner 74703 46863 0 0 7 0x14200 reaper 58800 256571 0 0 3 0x14200 pgdaemon pagedaemon 80114 116553 0 0 3 0x14200 bored crynlk 45851 279544 0 0 3 0x14200 bored crypto 37324 374678 0 0 3 0x40014200 acpi0 acpi0 93467 409899 0 0 3 0x40014200 idle1 37283 138156 0 0 3 0x14200 bored softnet 29126 55250 0 0 3 0x14200 bored systqmp 26835 32736 0 0 3 0x14200 bored systq 73061 443334 0 0 3 0x40014200 bored softclock 21805 90966 0 0 3 0x40014200 idle0 1 201440 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9492 6531K 7307K 78643K 11207 0 pcb 13 8K 8K 78643K 65 0 rtable 104 3K 7K 78643K 311 0 ifaddr 53 12K 12K 78643K 92 0 counters 43 33K 34K 78643K 45 0 ioctlops 0 0K 4K 78643K 1502 0 iov 0 0K 12K 78643K 46 0 mount 1 1K 1K 78643K 1 0 vnodes 1225 77K 77K 78643K 1370 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 44 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 214 0 sigio 0 0K 0K 78643K 2 0 proc 61 63K 95K 78643K 445 0 subproc 23 1K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 17 0 in_multi 46 2K 2K 78643K 79 0 ether_multi 1 0K 0K 78643K 8 0 mrt 0 0K 0K 78643K 10 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 221 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 130 39K 39K 78643K 1631 0 UVM aobj 6 2K 2K 78643K 6 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 30 0 NDP 7 0K 0K 78643K 15 0 temp 84 3859K 3969K 78643K 5092 0 kqueue 3 4K 8K 78643K 7 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 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 23 0 21 1 0 1 1 0 8 0 rtentry 112 56 0 13 2 0 2 2 0 8 0 unpcb 120 109 0 99 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 87 0 87 1 1 0 1 0 8 0 tcpcb 544 67 0 63 1 0 1 1 0 8 0 inpcb 296 248 0 241 2 1 1 2 0 8 0 rttmr 72 4 0 4 1 1 0 1 0 8 0 nd6 48 9 0 4 1 0 1 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 40 0 40 2 1 1 1 0 8 1 pfstitem 24 42 0 3 1 0 1 1 0 8 0 pfstkey 112 42 0 3 2 0 2 2 0 8 0 pfstate 328 42 0 2 4 0 4 4 0 8 0 pfrule 1360 28 0 23 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 212 0 40 13 0 13 13 0 8 0 art_table 32 213 0 40 2 0 2 2 0 8 0 art_node 16 55 0 16 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 8 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 42 0 32 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1657 0 251 89 0 89 89 0 8 0 ffsino 272 1657 0 251 97 2 95 95 0 8 0 nchpl 144 2241 0 632 60 0 60 60 0 8 0 uvmvnodes 72 1833 0 0 34 0 34 34 0 8 0 vnodes 208 1833 0 0 97 0 97 97 0 8 0 namei 1024 5964 0 5964 3 2 1 1 0 8 1 percpumem 16 33 0 1 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 2 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 12 0 12 2 1 1 1 0 8 1 scxspl 192 6643 0 6643 9 8 1 7 0 8 1 plimitpl 152 32 0 24 1 0 1 1 0 8 0 sigapl 424 430 0 399 4 0 4 4 0 8 0 futexpl 56 2943 0 2943 2 1 1 1 0 8 1 knotepl 112 66 0 47 1 0 1 1 0 8 0 kqueuepl 144 22 0 20 1 0 1 1 0 8 0 pipelkpl 48 93 0 83 1 0 1 1 0 8 0 pipepl 120 186 0 168 1 0 1 1 0 8 0 fdescpl 496 414 0 399 3 0 3 3 0 8 0 filepl 152 2343 0 2253 7 2 5 5 0 8 1 lockfpl 104 46 0 45 1 0 1 1 0 8 0 lockfspl 48 21 0 20 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 225 0 216 1 0 1 1 0 8 0 zombiepl 144 400 0 398 3 2 1 1 0 8 0 processpl 984 430 0 398 6 1 5 5 0 8 0 procpl 624 856 0 813 4 0 4 4 0 8 0 sosppl 128 4 0 4 2 1 1 1 0 8 1 sockpl 400 380 0 361 5 2 3 3 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 191 0 0 23 0 23 23 0 8 0 mtagpl 96 81 0 0 2 0 2 2 0 8 0 mbufpl 256 587 0 0 37 0 37 37 0 8 0 bufpl 280 3859 0 133 267 0 267 267 0 8 0 anonpl 16 50953 0 35069 67 2 65 66 0 124 0 amapchunkpl 152 2090 0 1960 7 0 7 7 0 158 0 amappl16 192 1716 0 850 45 1 44 45 0 8 0 amappl15 184 88 0 87 2 1 1 1 0 8 0 amappl14 176 29 0 23 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 6 0 5 2 1 1 1 0 8 0 amappl11 152 147 0 131 1 0 1 1 0 8 0 amappl10 144 120 0 111 1 0 1 1 0 8 0 amappl9 136 387 0 386 1 0 1 1 0 8 0 amappl8 128 353 0 318 2 0 2 2 0 8 0 amappl7 120 121 0 108 1 0 1 1 0 8 0 amappl6 112 26 0 21 1 0 1 1 0 8 0 amappl5 104 311 0 295 1 0 1 1 0 8 0 amappl4 96 488 0 460 1 0 1 1 0 8 0 amappl3 88 108 0 102 1 0 1 1 0 8 0 amappl2 80 2468 0 2397 2 0 2 2 0 8 0 amappl1 72 19062 0 18621 23 13 10 18 0 8 0 amappl 80 1102 0 1059 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 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 416 0 399 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 416 0 399 1 0 1 1 0 8 0 vmmpekpl 168 7355 0 7320 2 0 2 2 0 8 0 vmmpepl 168 57203 0 55239 123 28 95 116 0 357 5 vmsppl 368 415 0 398 2 0 2 2 0 8 0 pdppl 4096 839 0 798 7 1 6 6 0 8 0 pvpl 32 173766 0 154855 166 6 160 162 0 265 4 pmappl 232 415 0 398 3 1 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 293 0 10 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ml_purge(ffff800023107958) at ml_purge+0x38 sys/kern/uipc_mbuf.c:1627 ifq_purge(ffff800000af1a78) at ifq_purge+0x9a sys/net/ifq.c:462 tun_dev_close(5d01,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460 spec_close(ffff800023107a80) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e3394e8,7,fffffd807f7bf660,ffff800020e084f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8066925d30,ffff800020e084f8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8066925d30,ffff800020e084f8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8066925d30,ffff800020e084f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8066925d30,ffff800020e084f8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e084f8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e084f8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020e084f8,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020e084f8,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020e084f8) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800023107f00) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800023107f00) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff7500, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d70ff0) 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(8a93e,8a93f) at __sanitizer_cov_trace_cmp4+0x10 sys/dev/kcov.c:134 __mp_lock(ffffffff828ac5d8) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ac5d8) at __mp_lock+0x139 sys/kern/kern_lock.c:147 uvm_pause() at uvm_pause+0x5b sys/uvm/uvm_glue.c:438 uvm_unmap_detach(ffff800020dcfa60,1) at uvm_unmap_detach+0x13a sys/uvm/uvm_map.c:1585 uvm_map_teardown(fffffd807efff000) at uvm_map_teardown+0x25c sys/uvm/uvm_map.c:2757 uvmspace_free(fffffd807efff000) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff800020e22028) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff800020d89380) at reaper+0x189 sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -11