uvm_fault(0xfffffd807effe000, 0xa, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807effe000, 0xa, 0, 1) -> e in_delmulti(fffffffffffffffe) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800021ed39b0, count: 0 ddb{1}> trace in_delmulti(fffffffffffffffe) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b0fc00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 ifioctl(fffffd8065409e28,80206979,ffff800021ed3bf0,ffff800021f5c2a8) at ifioctl+0x3ea sys/net/if.c:1821 soo_ioctl(fffffd80653f7ab0,80206979,ffff800021ed3bf0,ffff800021f5c2a8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800021f5c2a8,ffff800021ed3d08,ffff800021ed3d50) at sys_ioctl+0x4a5 syscall(ffff800021ed3dd0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021ed3dd0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5619fe3dc40, count: -10 ddb{1}> show registers rdi 0xffff800020ece000 rsi 0x1e98a acpi_pdirpa+0xa7f2 rbp 0xffff800021ed3960 rbx 0x8 rdx 0xffff800020ece000 rcx 0x1e989 acpi_pdirpa+0xa7f1 rax 0xffffffff823bf7bd in_delmulti+0x8d r8 0xffff800000b0fc00 r9 0xffffffff81e56833 rt_ifa_purge+0x153 r10 0x5 r11 0x13c5c5a732d8dcdc r12 0 r13 0x8da1216f __kernel_virt_to_phys+0xda1216f r14 0xfffffffffffffffe r15 0x1 rip 0xffffffff823bf7bd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021ed3900 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=4247 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021f5c520,0xffff800021f5ca20 process=0xffff800021f487e8 user=0xffff800021ece000, vmspace=0xfffffd807effe000 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 93471 404760 18109 0 7 0 syz-executor.1 93471 169932 18109 0 2 0x4000000 syz-executor.1 18161 151536 5703 0 3 0x80 nanosleep syz-executor.0 *18161 4247 5703 0 7 0x4000000 syz-executor.0 83607 499850 0 0 3 0x14280 nfsidl nfsio 90547 130561 0 0 3 0x14280 nfsidl nfsio 22359 509306 0 0 3 0x14280 nfsidl nfsio 43428 473430 0 0 3 0x14280 nfsidl nfsio 65713 367475 0 0 3 0x14280 nfsidl nfsio 93145 212088 0 0 3 0x14280 nfsidl nfsio 28896 3838 0 0 3 0x14280 nfsidl nfsio 71165 428687 0 0 3 0x14280 nfsidl nfsio 21677 95084 0 0 3 0x14280 nfsidl nfsio 88237 215738 0 0 3 0x14280 nfsidl nfsio 72253 315638 0 0 3 0x14280 nfsidl nfsio 99164 10682 0 0 3 0x14280 nfsidl nfsio 82164 457961 0 0 3 0x14280 nfsidl nfsio 15241 364397 0 0 3 0x14280 nfsidl nfsio 7581 140972 0 0 3 0x14280 nfsidl nfsio 35089 192317 0 0 3 0x14280 nfsidl nfsio 10801 217057 0 0 3 0x14280 nfsidl nfsio 41194 185208 0 0 3 0x14280 nfsidl nfsio 98171 382181 0 0 3 0x14280 nfsidl nfsio 34658 358544 0 0 3 0x14280 nfsidl nfsio 18109 401990 65468 0 3 0x82 nanosleep syz-executor.1 5703 176577 65468 0 3 0x82 nanosleep syz-executor.0 65468 405210 11060 0 3 0x82 thrsleep syz-fuzzer 65468 516496 11060 0 3 0x4000082 nanosleep syz-fuzzer 65468 210391 11060 0 3 0x4000082 thrsleep syz-fuzzer 65468 95511 11060 0 3 0x4000082 thrsleep syz-fuzzer 65468 194555 11060 0 3 0x4000082 kqread syz-fuzzer 65468 104635 11060 0 3 0x4000082 thrsleep syz-fuzzer 65468 339937 11060 0 3 0x4000082 thrsleep syz-fuzzer 65468 509068 11060 0 3 0x4000082 thrsleep syz-fuzzer 11060 199320 73325 0 3 0x10008a pause ksh 73325 7335 95271 0 3 0x92 select sshd 52086 316982 1 0 3 0x100083 ttyin getty 95271 321338 1 0 3 0x80 select sshd 62727 315042 80638 74 3 0x100092 bpf pflogd 80638 437229 1 0 3 0x80 netio pflogd 40269 42476 7573 73 3 0x100090 kqread syslogd 7573 124181 1 0 3 0x100082 netio syslogd 25382 218283 1 77 3 0x100090 poll dhclient 46552 295066 1 0 3 0x80 poll dhclient 62755 22074 0 0 3 0x14200 bored smr 96429 186926 0 0 3 0x14200 pgzero zerothread 26456 262005 0 0 3 0x14200 aiodoned aiodoned 95458 306508 0 0 3 0x14200 syncer update 73988 334563 0 0 3 0x14200 cleaner cleaner 82812 423185 0 0 3 0x14200 reaper reaper 20061 467858 0 0 3 0x14200 pgdaemon pagedaemon 88048 423378 0 0 3 0x14200 bored crynlk 32799 72122 0 0 3 0x14200 bored crypto 46912 28040 0 0 3 0x40014200 acpi0 acpi0 98732 237086 0 0 3 0x40014200 idle1 23886 285060 0 0 3 0x14200 bored softnet 87991 153594 0 0 3 0x14200 bored systqmp 5024 322315 0 0 3 0x14200 bored systq 94500 279535 0 0 3 0x40014200 bored softclock 65315 108787 0 0 3 0x40014200 idle0 1 483059 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 18161 (syz-executor.0) thread 0xffff800021f5c2a8 (4247) exclusive rwlock netlock r = 0 (0xffffffff827713e0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 if_detach+0x70 sys/net/if.c:1010 #2 tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 #3 ifioctl+0x3ea sys/net/if.c:1821 #4 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #5 sys_ioctl+0x4a5 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #7 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82933348) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 #2 mi_switch+0x392 sys/kern/sched_bsd.c:435 #3 sleep_finish+0x113 sys/kern/kern_synch.c:418 #4 cond_wait+0x76 sys/kern/kern_synch.c:907 #5 smr_barrier_impl+0xf9 sys/kern/kern_smr.c:271 #6 tun_clone_destroy+0x136 sys/net/if_tun.c:311 #7 ifioctl+0x3ea sys/net/if.c:1821 #8 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #9 sys_ioctl+0x4a5 #10 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #11 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9504 6417K 6740K 78643K 10902 0 pcb 13 8K 8K 78643K 59 0 rtable 119 6K 9K 78643K 393 0 ifaddr 66 13K 15K 78643K 117 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 49 0 ioctlops 0 0K 4K 78643K 1759 0 iov 0 0K 16K 78643K 19 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1319 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 41 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 281 0 sigio 0 0K 0K 78643K 2 0 proc 62 63K 95K 78643K 469 0 subproc 32 2K 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 19 0 in_multi 47 2K 2K 78643K 78 0 ether_multi 1 0K 0K 78643K 5 0 mrt 0 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 226 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 162 26K 27K 78643K 1830 0 UVM aobj 13 2K 2K 78643K 13 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 40 0 NDP 10 0K 0K 78643K 20 0 temp 121 3871K 3935K 78643K 6306 0 kqueue 3 4K 12K 78643K 13 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 10 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 26 0 24 1 0 1 1 0 8 0 rtentry 112 62 0 18 2 0 2 2 0 8 0 unpcb 120 255 0 242 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 299 0 299 1 1 0 1 0 8 0 tcpcb 592 449 0 435 5 1 4 5 0 8 2 inpcb 296 615 0 599 2 0 2 2 0 8 0 nd6 48 12 0 5 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pffrag 232 3 0 3 2 1 1 1 0 482 1 pffrnode 88 3 0 3 2 1 1 1 0 8 1 pffrent 40 53 0 53 2 1 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 pfrktable 1344 49 0 45 1 0 1 1 0 8 0 pftag 88 2 0 2 1 0 1 1 0 8 1 pfstitem 24 28 0 8 1 0 1 1 0 8 0 pfstkey 112 28 0 8 1 0 1 1 0 8 0 pfstate 328 28 0 8 3 0 3 3 0 8 0 pfrule 1360 29 0 22 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 200 0 11 13 0 13 13 0 8 0 art_table 32 201 0 11 2 0 2 2 0 8 0 art_node 16 61 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semapl 112 39 0 29 1 0 1 1 0 8 0 shmpl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1731 0 330 88 0 88 88 0 8 0 ffsino 272 1731 0 330 95 1 94 94 0 8 0 nchpl 144 2294 0 685 60 0 60 60 0 8 0 uvmvnodes 72 1850 0 0 34 0 34 34 0 8 0 vnodes 208 1850 0 0 98 0 98 98 0 8 0 namei 1024 6140 0 6140 2 1 1 1 0 8 1 percpumem 16 35 0 3 1 0 1 1 0 8 0 pfiaddrpl 120 14 0 12 1 0 1 1 0 8 0 scxspl 200 6570 0 6570 8 7 1 7 0 8 1 plimitpl 152 25 0 17 1 0 1 1 0 8 0 sigapl 424 516 0 464 6 0 6 6 0 8 0 futexpl 56 3522 0 3522 1 0 1 1 0 8 1 knotepl 112 74 0 54 1 0 1 1 0 8 0 kqueuepl 152 26 0 24 1 0 1 1 0 8 0 pipepl 304 106 0 95 2 0 2 2 0 8 1 fdescpl 496 481 0 464 3 0 3 3 0 8 0 filepl 152 2775 0 2660 6 1 5 5 0 8 0 lockfpl 104 96 0 94 1 0 1 1 0 8 0 lockfspl 48 33 0 31 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 222 0 213 1 0 1 1 0 8 0 zombiepl 144 464 0 464 2 1 1 1 0 8 1 processpl 1008 516 0 464 8 1 7 7 0 8 0 procpl 632 1034 0 973 7 1 6 6 0 8 0 srpgc 72 3 0 3 1 0 1 1 0 8 1 sockpl 400 896 0 865 5 1 4 4 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 162 0 0 20 0 20 20 0 8 0 mtagpl 96 20 0 0 1 0 1 1 0 8 0 mbufpl 256 285 0 0 17 0 17 17 0 8 0 bufpl 280 3627 0 127 250 0 250 250 0 8 0 anonpl 16 64975 0 46647 93 3 90 90 0 124 15 amapchunkpl 152 2616 0 2319 18 1 17 17 0 158 4 amappl16 192 2235 0 1383 57 2 55 55 0 8 12 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 3 0 2 1 0 1 1 0 8 0 amappl13 168 158 0 153 1 0 1 1 0 8 0 amappl12 160 146 0 138 1 0 1 1 0 8 0 amappl11 152 59 0 43 1 0 1 1 0 8 0 amappl10 144 25 0 20 1 0 1 1 0 8 0 amappl9 136 367 0 366 1 0 1 1 0 8 0 amappl8 128 347 0 308 2 0 2 2 0 8 0 amappl7 120 115 0 102 1 0 1 1 0 8 0 amappl6 112 30 0 24 1 0 1 1 0 8 0 amappl5 104 495 0 477 1 0 1 1 0 8 0 amappl4 96 618 0 588 1 0 1 1 0 8 0 amappl3 88 125 0 115 1 0 1 1 0 8 0 amappl2 80 2899 0 2822 2 0 2 2 0 8 0 amappl1 72 22764 0 22302 22 12 10 17 0 8 0 amappl 80 1313 0 1229 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 12 0 0 1 0 1 1 0 8 0 uaddrrnd 24 481 0 464 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 481 0 464 1 0 1 1 0 8 0 vmmpekpl 168 7551 0 7511 2 0 2 2 0 8 0 vmmpepl 168 67330 0 65159 122 15 107 114 0 357 12 vmsppl 368 480 0 464 2 0 2 2 0 8 0 pdppl 4096 969 0 928 7 1 6 6 0 8 0 pvpl 32 205201 0 183367 217 3 214 214 0 265 37 pmappl 232 480 0 464 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 262 0 8 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82785ff0) 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_pc() at __sanitizer_cov_trace_pc+0x16 sys/dev/kcov.c:112 intr_handler(ffff800021edfbe0,ffff800000256c80) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge20_untramp() at Xintr_ioapic_edge20_untramp+0x19f witness_warn(2,0,ffffffff82483d2f) at witness_warn+0x330 sys/kern/subr_witness.c:1407 userret(ffff800021f5ca10) at userret+0x360 sys/kern/kern_sig.c:1898 syscall(ffff800021edfe90) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800021edfe90) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff3870, count: -10 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(fffffffffffffffe) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b0fc00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 ifioctl(fffffd8065409e28,80206979,ffff800021ed3bf0,ffff800021f5c2a8) at ifioctl+0x3ea sys/net/if.c:1821 soo_ioctl(fffffd80653f7ab0,80206979,ffff800021ed3bf0,ffff800021f5c2a8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800021f5c2a8,ffff800021ed3d08,ffff800021ed3d50) at sys_ioctl+0x4a5 syscall(ffff800021ed3dd0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021ed3dd0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5619fe3dc40, count: -10