panic: failed to reclaim memory cpuid = 0 time = 1762183324 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056c9f470 kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056c9f5d0 vpanic() at vpanic+0x257/frame 0xfffffe0056c9f790 panic() at panic+0xb5/frame 0xfffffe0056c9f860 vm_pageout_oom() at vm_pageout_oom+0xce4/frame 0xfffffe0056c9f8f0 vm_pageout_worker() at vm_pageout_worker+0xf9b/frame 0xfffffe0056c9fea0 vm_pageout() at vm_pageout+0x2ce/frame 0xfffffe0056c9fef0 fork_exit() at fork_exit+0xcc/frame 0xfffffe0056c9ff30 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0056c9ff30 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- KDB: enter: panic [ thread pid 8 tid 100077 ] Stopped at kdb_enter+0x6e: movq $0,0x2589dc7(%rip) db> db> set $lines = 0 db> set $maxwidth = 0 db> show registers cs 0x20 ds 0x3b es 0x3b fs 0x13 gs 0x1b ss 0 rax 0x12 rcx 0xfffffe0002bf1850 rdx 0 rbx 0xffffffff82825b60 .str.27 rsp 0xfffffe0056c9f5b0 rbp 0xfffffe0056c9f5d0 rsi 0 rdi 0xffffffff8165ade9 printf+0x149 r8 0 r9 0xffffffff r10 0 r11 0x6 r12 0xfffffe0054014780 r13 0xfffffffffffffffe r14 0xffffffff82825b60 .str.27 r15 0 rip 0xffffffff816441ce kdb_enter+0x6e rflags 0x46 kdb_enter+0x6e: movq $0,0x2589dc7(%rip) db> show proc Process 8 (pagedaemon) at 0xfffffe005400a558: state: NORMAL uid: 0 gid: 0 supp gids: 0 parent: pid 0 at 0xffffffff83b58040 ABI: null flag: 0x10000284 flag2: 0 reaper: 0xffffffff83b58040 reapsubtree: 8 sigparent: 20 vmspace: 0xffffffff83b59020 (map 0xffffffff83b59020) (map.pmap 0xffffffff83b590c0) (pmap 0xffffffff83b59130) threads: 3 100077 Run CPU 0 [dom0] 100080 Run CPU 1 [laundry: dom0] 100081 D umarcls 0xffffffff8282a241 [uma] db> ps pid ppid pgrp uid state wmesg wchan cmd 1271 1257 765 0 N syz-executor 1270 1268 1157 0 S+ piperd 0xfffffe006e5808a0 sh 1269 1268 1157 0 D+ pfault 0xffffffff83003480 ps 1268 1267 1157 0 S+ wait 0xfffffe005400d570 sh 1267 1157 1157 0 S+ piperd 0xfffffe006e580b80 sh 1260 763 763 0 D (threaded) syz-executor 100096 D vm map 0xfffffe00540dd060 syz-executor 100804 S lockf 0xfffffe0007673680 syz-executor 100806 D vmwait 0xffffffff83003480 syz-executor 1257 765 765 0 DL (threaded) syz-executor 100107 D vmwait 0xffffffff83003480 syz-executor 100801 S select 0xfffffe00585bf6c0 syz-executor 100803 D vmwait 0xffffffff83003480 syz-executor 100807 S uwait 0xfffffe0077bd5a80 syz-executor 1252 766 766 0 DL (threaded) syz-executor 100544 D vmmaps 0xfffffe00540af9b8 syz-executor 100799 S fifoor 0xfffffe0053f5f9a8 syz-executor 100800 S lockf 0xfffffe0007674500 syz-executor 100802 S uwait 0xfffffe0077bdf200 syz-executor 100805 D vmwait 0xffffffff83003480 syz-executor 1246 1 765 0 S uwait 0xfffffe0058292e80 syz-executor 1244 1 763 0 S uwait 0xfffffe0077860280 syz-executor 1242 764 764 0 D (threaded) syz-executor 100525 D vm map 0xfffffe005416d980 syz-executor 100790 S select 0xfffffe00585bf740 syz-executor 100794 D vmwait 0xffffffff83003480 syz-executor 1215 1 763 0 S uwait 0xfffffe0077bdf280 syz-executor 1213 0 0 0 DL mdwait 0xfffffe006e5e2000 [md0] 1205 1 766 0 SV uwait 0xfffffe0058516400 syz-executor 1171 1 764 0 S uwait 0xfffffe0058294f00 syz-executor 1164 1162 1157 0 S+ nanslp 0xffffffff83baf001 sleep 1162 1157 1157 0 S+ wait 0xfffffe0054005018 sh 1157 1 1157 0 Ss+ wait 0xfffffe00541d3008 sh 1156 1 765 0 S uwait 0xfffffe0077bd6400 syz-executor 1155 1 766 0 S uwait 0xfffffe0077bd6c80 syz-executor 1153 1 765 0 S uwait 0xfffffe0077bd6300 syz-executor 1152 1 764 0 S uwait 0xfffffe0077be0200 syz-executor 1151 1 766 0 S uwait 0xfffffe0058517380 syz-executor 1146 1 766 0 S uwait 0xfffffe0077860580 syz-executor 1144 1 765 0 S uwait 0xfffffe0077bdf000 syz-executor 1142 1 763 0 S uwait 0xfffffe0077860380 syz-executor 1136 1 765 0 S uwait 0xfffffe0077bd6e80 syz-executor 1130 1 766 0 S uwait 0xfffffe0077bdf380 syz-executor 1126 1 1124 0 S uwait 0xfffffe0077be0000 syz-executor 1125 1 764 0 S uwait 0xfffffe0077bd6b80 syz-executor 1122 1 764 0 S uwait 0xfffffe0077bd6a80 syz-executor 1115 1 765 0 S uwait 0xfffffe0077bdf980 syz-executor 1114 1 766 0 S uwait 0xfffffe0077bdf880 syz-executor 1111 0 0 0 DL mdwait 0xfffffe007811c000 [md6] 1103 0 0 0 DL (threaded) [so_splice] 100468 D - 0xfffffe00585bfa00 [thr_0] 100632 D - 0xfffffe00585bfa40 [thr_1] 1096 1 764 0 S uwait 0xfffffe0077861b00 syz-executor 1089 1 765 0 S uwait 0xfffffe0077bdfb80 syz-executor 1080 0 0 0 DL mdwait 0xfffffe0077e9b000 [md5] 1079 1 764 0 S uwait 0xfffffe0058516380 syz-executor 1075 1 766 0 S uwait 0xfffffe0058517880 syz-executor 1073 1 764 0 S uwait 0xfffffe007785ff00 syz-executor 1071 1 765 0 S uwait 0xfffffe0077bdfc80 syz-executor 1067 1 764 0 S uwait 0xfffffe0077860880 syz-executor 1062 0 0 0 DL mdwait 0xfffffe0077c74000 [md4] 1061 1053 1061 0 Ss select 0xfffffe0007787640 dhclient 1057 1 1057 0 Ss select 0xfffffe00077883c0 dhclient 1053 1045 423 65 S select 0xfffffe0007787bc0 dhclient 1045 423 423 0 S wait 0xfffffe0054105000 sh 1043 1 765 0 S uwait 0xfffffe0058295900 syz-executor 1033 1 1033 65 Ss select 0xfffffe00585bff40 dhclient 1027 1 763 0 S uwait 0xfffffe0077860d80 syz-executor 1025 1 766 0 S uwait 0xfffffe0077862180 syz-executor 1024 1 765 0 S uwait 0xfffffe0077861900 syz-executor 1023 1 764 0 S uwait 0xfffffe0077860480 syz-executor 1020 1 765 0 S uwait 0xfffffe0058516680 syz-executor 1012 0 0 0 DL mdwait 0xfffffe0077b4a000 [md3] 1008 1 766 0 S uwait 0xfffffe0058295600 syz-executor 1007 1 765 0 S uwait 0xfffffe0058295400 syz-executor 1005 1 763 0 S uwait 0xfffffe0058516a80 syz-executor 1003 1 766 0 S umtxn 0xfffffe0058516000 syz-executor 998 1 764 0 S uwait 0xfffffe0058293480 syz-executor 997 1 763 0 S uwait 0xfffffe0058295200 syz-executor 991 1 765 0 S uwait 0xfffffe0058294400 syz-executor 990 1 766 0 SV uwait 0xfffffe0058516780 syz-executor 989 0 0 0 DL mdwait 0xfffffe00779d1000 [md2] 983 1 766 0 S uwait 0xfffffe0058294200 syz-executor 981 1 763 0 S uwait 0xfffffe0058293000 syz-executor 980 1 766 0 S uwait 0xfffffe0058295300 syz-executor 978 1 765 0 S uwait 0xfffffe0077861180 syz-executor 977 1 764 0 S uwait 0xfffffe0058516100 syz-executor 972 1 765 0 S uwait 0xfffffe0007a84d00 syz-executor 971 1 764 0 S uwait 0xfffffe0058293300 syz-executor 969 1 766 0 S uwait 0xfffffe0077861600 syz-executor 965 1 765 0 S uwait 0xfffffe0077861f00 syz-executor 963 1 766 0 S uwait 0xfffffe0058293200 syz-executor 959 1 764 0 S uwait 0xfffffe0058295a80 syz-executor 956 1 763 0 S uwait 0xfffffe0077861c00 syz-executor 952 1 765 0 S uwait 0xfffffe0077860e80 syz-executor 946 1 764 0 S uwait 0xfffffe0077861400 syz-executor 945 1 763 0 S uwait 0xfffffe0077861000 syz-executor 941 0 0 0 DL mdwait 0xfffffe00077d1000 [md1] 935 1 766 0 S uwait 0xfffffe0058516d80 syz-executor 934 1 763 0 S uwait 0xfffffe0077862280 syz-executor 932 1 765 0 S uwait 0xfffffe0077860a80 syz-executor 927 1 763 0 S uwait 0xfffffe0058516880 syz-executor 926 1 766 0 S uwait 0xfffffe0058292000 syz-executor 924 1 763 0 S uwait 0xfffffe0007a84500 syz-executor 913 1 765 0 S uwait 0xfffffe0058517980 syz-executor 911 1 766 0 S uwait 0xfffffe0058516580 syz-executor 907 1 764 0 S uwait 0xfffffe0077861e00 syz-executor 900 1 764 0 S uwait 0xfffffe0077861a00 syz-executor 899 1 763 0 S uwait 0xfffffe0058292b80 syz-executor 898 1 766 0 S uwait 0xfffffe0058293500 syz-executor 894 1 766 0 S uwait 0xfffffe0007a84e80 syz-executor 891 1 765 0 S uwait 0xfffffe0058293600 syz-executor 884 1 766 0 S uwait 0xfffffe0058516e80 syz-executor 879 1 763 0 S uwait 0xfffffe0077861d00 syz-executor 875 1 763 0 S uwait 0xfffffe0077862080 syz-executor 874 1 765 0 S uwait 0xfffffe0058517d80 syz-executor 861 1 765 0 S uwait 0xfffffe0058294d00 syz-executor 856 1 764 0 S uwait 0xfffffe0058294c00 syz-executor 855 1 763 0 S uwait 0xfffffe0007a84e00 syz-executor 854 1 765 0 S uwait 0xfffffe0058292900 syz-executor 850 1 766 0 S uwait 0xfffffe0007a84c00 syz-executor 838 1 763 0 S uwait 0xfffffe0077861700 syz-executor 837 1 766 0 S uwait 0xfffffe0058517a80 syz-executor 836 1 765 0 S uwait 0xfffffe0007a84a00 syz-executor 832 1 764 0 S uwait 0xfffffe0058292080 syz-executor 829 1 766 0 S uwait 0xfffffe0007a84600 syz-executor 827 1 765 0 S uwait 0xfffffe0058292a00 syz-executor 825 1 764 0 S uwait 0xfffffe0058292500 syz-executor 824 0 0 0 DL - 0xffffffff83ccf200 [soaiod4] 823 0 0 0 DL - 0xffffffff83ccf200 [soaiod3] 822 0 0 0 DL - 0xffffffff83ccf200 [soaiod2] 821 0 0 0 DL - 0xffffffff83ccf200 [soaiod1] 816 1 816 0 Ss select 0xfffffe0007787a40 dhclient 812 1 812 0 Ss select 0xfffffe00077879c0 dhclient 800 0 0 0 DL aiordy 0xfffffe00540e8010 [aiod4] 799 0 0 0 DL aiordy 0xfffffe00540e8568 [aiod3] 798 0 0 0 DL aiordy 0xfffffe00540e8ac0 [aiod2] 797 0 0 0 DL aiordy 0xfffffe00540e9570 [aiod1] 766 762 766 0 S wait 0xfffffe005400cac0 syz-executor 765 762 765 0 S wait 0xfffffe00540cbac0 syz-executor 764 762 764 0 S wait 0xfffffe00540cc018 syz-executor 763 762 763 0 S wait 0xfffffe005400c010 syz-executor 762 760 760 0 S select 0xfffffe0007787e40 syz-executor 760 758 760 0 Ss sigsusp 0xfffffe00540ca0b8 csh 758 1 758 0 Ss select 0xfffffe0007787dc0 sshd 494 1 494 0 Ss select 0xfffffe0007787f40 syslogd 423 1 423 0 Ss wait 0xfffffe005400aab0 devd 422 1 422 65 Ss select 0xfffffe0007788340 dhclient 337 1 337 0 Ss select 0xfffffe00077880c0 dhclient 334 1 334 0 Ss select 0xfffffe00585bfec0 dhclient 16 0 0 0 DL syncer 0xffffffff83cdcc20 [syncer] 15 0 0 0 DL vlruwt 0xfffffe0054002558 [vnlru] 14 0 0 0 DL (threaded) [bufdaemon] 100079 D psleep 0xffffffff83cdb160 [bufdaemon] 100082 D - 0xffffffff83001ec0 [bufspacedaemon-0] 100095 D sdflush 0xfffffe00585f40e8 [/ worker] 9 0 0 0 DL psleep 0xffffffff83d1c040 [vmdaemon] 8 0 0 0 RL (threaded) [pagedaemon] 100077 Run CPU 0 [dom0] 100080 Run CPU 1 [laundry: dom0] 100081 D umarcls 0xffffffff8282a241 [uma] 7 0 0 0 DL - 0xffffffff839275b0 [rand_harvestq] 6 0 0 0 DL pftm 0xffffffff845d5f60 [pf purge] 5 0 0 0 DL waiting 0xffffffff844a4700 [sctp_iterator] 4 0 0 0 DL (threaded) [cam] 100045 D - 0xffffffff838f1340 [doneq0] 100046 D - 0xffffffff838f12c0 [async] 100075 D - 0xffffffff838f1140 [scanner] 3 0 0 0 DL (threaded) [crypto] 100042 D crypto_ 0xffffffff83cfd9e0 [crypto] 100043 D crypto_ 0xfffffe0053ea4030 [crypto returns 0] 100044 D crypto_ 0xfffffe0053ea4080 [crypto returns 1] 13 0 0 0 DL (threaded) [geom] 100037 D - 0xffffffff83b57600 [g_event] 100038 D - 0xffffffff83b57620 [g_up] 100039 D - 0xffffffff83b57640 [g_down] 2 0 0 0 WL (threaded) [clock] 100031 I [clock (0)] 100032 I [clock (1)] 12 0 0 0 WL (threaded) [intr] 100013 I [swi6: task queue] 100014 I [swi6: Giant taskq] 100016 I [swi5: fast taskq] 100033 I [swi1: netisr 0] 100034 I [swi1: hpts] 100035 I [swi1: hpts] 100047 I [irq24: virtio_pci0] 100048 I [irq25: virtio_pci0] 100049 I [irq26: virtio_pci0] 100050 I [irq27: virtio_pci0] 100051 I [irq28: virtio_pci1] 100052 I [irq29: virtio_pci1] 100053 I [irq30: virtio_pci1] 100054 I [irq31: virtio_pci1] 100055 I [irq32: virtio_pci1] 100060 I [irq10: virtio_pci2] 100062 I [irq1: atkbd0] 100063 I [irq12: psm0] 100064 I [swi0: uart uart++] 100068 I [swi1: pf send] 11 0 0 0 RL (threaded) [idle] 100003 CanRun [idle: cpu0] 100004 CanRun [idle: cpu1] 1 0 1 0 SLs wait 0xfffffe0007809010 [init] 10 0 0 0 DL audit_w 0xffffffff83cfe480 [audit] 0 0 0 0 DLs (threaded) [kernel] 100000 D parked 0xffffffff84c52ff0 [swapper] 100005 D - 0xfffffe00083fba00 [softirq_0] 100006 D - 0xfffffe00083fb800 [softirq_1] 100007 D - 0xfffffe00083fb600 [if_io_tqg_0] 100008 D - 0xfffffe00083fb400 [if_io_tqg_1] 100009 D - 0xfffffe00083fb200 [if_config_tqg_0] 100010 D - 0xfffffe00083fb000 [kqueue_ctx taskq] 100011 D - 0xfffffe00083fad00 [jail_remove taskq] 100012 D - 0xfffffe00083fab00 [bus taskq] 100015 D - 0xfffffe00083fa500 [thread taskq] 100017 D - 0xfffffe00083fa100 [aiod_kick taskq] 100018 D - 0xfffffe00083f9e00 [deferred_unmount ta] 100019 D - 0xfffffe00083f9c00 [inm_free taskq] 100020 D - 0xfffffe00083f9a00 [in6m_free taskq] 100021 D - 0xfffffe00083f9800 [linuxkpi_irq_wq] 100022 D - 0xfffffe00083f9600 [linuxkpi_short_wq_0] 100023 D - 0xfffffe00083f9600 [linuxkpi_short_wq_1] 100024 D - 0xfffffe00083f9600 [linuxkpi_short_wq_2] 100025 D - 0xfffffe00083f9600 [linuxkpi_short_wq_3] 100026 D - 0xfffffe00083f9100 [linuxkpi_long_wq_0] 100027 D - 0xfffffe00083f9100 [linuxkpi_long_wq_1] 100028 D - 0xfffffe00083f9100 [linuxkpi_long_wq_2] 100029 D - 0xfffffe00083f9100 [linuxkpi_long_wq_3] 100036 D - 0xfffffe00083f8400 [firmware taskq] 100040 D - 0xfffffe0053f59100 [crypto_0] 100041 D - 0xfffffe0053f59100 [crypto_1] 100056 D - 0xfffffe00083fc200 [vtnet0 rxq 0] 100057 D - 0xfffffe005817e500 [vtnet0 txq 0] 100058 D - 0xfffffe005817e400 [vtnet0 rxq 1] 100059 D - 0xfffffe005817e300 [vtnet0 txq 1] 100061 D vtbslp 0xfffffe0057e48200 [virtio_balloon] 100065 D - 0xffffffff8282a241 [deadlkres] 100069 D - 0xfffffe005851d000 [acpi_task_0] 100070 D - 0xfffffe005851d000 [acpi_task_1] 100071 D - 0xfffffe005851d000 [acpi_task_2] 100073 D - 0xfffffe00083fc100 [mca taskq] 100074 D - 0xfffffe0053f58a00 [CAM taskq] 100076 D - 0xfffffe0053f59500 [ipsec_offload] 100237 D - 0xfffffe00598f7900 [netlink_socket (PID] 100285 D - 0xfffffe00598f8500 [netlink_socket (PID] 100355 D - 0xfffffe006df9a800 [netlink_socket (PID] 100453 D - 0xfffffe006df99400 [netlink_socket (PID] 100531 D - 0xfffffe00598f8400 [netlink_socket (PID] 100580 D - 0xfffffe0077dd1100 [netlink_socket (PID] db> show all locks Process 1260 (syz-executor) thread 0xfffffe0078400000 (100806) exclusive sx vm map (user) (vm map (user)) r = 0 (0xfffffe00541edbc8) locked @ /syzkaller/managers/i386/kernel/sys/vm/vm_map.c:4373 exclusive sx vm map (user) (vm map (user)) r = 0 (0xfffffe00540dd060) locked @ /syzkaller/managers/i386/kernel/sys/vm/vm_map.c:4369 shared sx killpg racer (killpg racer) r = 0 (0xfffffe00540a46e8) locked @ /syzkaller/managers/i386/kernel/sys/kern/kern_fork.c:961 Process 1257 (syz-executor) thread 0xfffffe00540ed780 (100107) exclusive sx vm map (user) (vm map (user)) r = 0 (0xfffffe00541e3e10) locked @ /syzkaller/managers/i386/kernel/sys/vm/vm_map.c:2813 Process 1257 (syz-executor) thread 0xfffffe00541b5780 (100803) shared sx killpg racer (killpg racer) r = 0 (0xfffffe00540d75f8) locked @ /syzkaller/managers/i386/kernel/sys/kern/kern_fork.c:961 Process 1252 (syz-executor) thread 0xfffffe0078400780 (100805) shared sx vm map (user) (vm map (user)) r = 0 (0xfffffe00540af980) locked @ /syzkaller/managers/i386/kernel/sys/vm/vm_map.c:4998 Process 1242 (syz-executor) thread 0xfffffe00541cb780 (100794) exclusive sx vm map (user) (vm map (user)) r = 0 (0xfffffe00541ee060) locked @ /syzkaller/managers/i386/kernel/sys/vm/vm_map.c:4373 exclusive sx vm map (user) (vm map (user)) r = 0 (0xfffffe005416d980) locked @ /syzkaller/managers/i386/kernel/sys/vm/vm_map.c:4369 shared sx killpg racer (killpg racer) r = 0 (0xfffffe00540d7670) locked @ /syzkaller/managers/i386/kernel/sys/kern/kern_fork.c:961 Process 8 (pagedaemon) thread 0xfffffe0054008000 (100080) exclusive sleep mutex vm laundry pagequeue (vm pagequeue) r = 0 (0xffffffff83d01c00) locked @ /syzkaller/managers/i386/kernel/sys/vm/vm_page.c:3722 exclusive rw vmobject (vmobject) r = 0 (0xfffffe00541567c0) locked @ /syzkaller/managers/i386/kernel/sys/vm/swap_pager.c:1670 db> serialport: VM disconnected.