Bug was catched by fsfuzzer. Probably that bug cannot be found in real life with real usecase, but anyway it is a bug.
panic: ext2fs_dirbadentry Stopped at Debugger+0x5: leave RUN AT LEAST 'trace' AND 'ps' AND INCLUDE OUTPUT WHEN REPORTING THIS PANIC! DO NOT EVEN BOTHER REPORTING THIS WITHOUT INCLUDING THAT INFORMATION! ddb> Debugger() at Debugger+0x5 panic() at panic+0xe4 ext2fs_lookup() at ext2fs_lookup+0x68f VOP_LOOKUP() at VOP_LOOKUP+0x2c vfs_lookup() at vfs_lookup+0x271 namei() at namei+0x21c vn_open() at vn_open+0x91 doopenat() at doopenat+0x125 syscall() at syscall+0x162 --- syscall (number 5) --- end of kernel end trace frame: 0xffffffff, count: -9 acpi_pdirpa+0x4253fa: Full logs are below: OpenBSD 5.4-beta (GENERIC) #0: Mon Jul 15 23:06:59 MSK 2013 es...@xxxx.xxx:/usr/src/sys/arch/amd64/compile/GENERIC real mem = 4168839168 (3975MB) avail mem = 4050149376 (3862MB) mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe0010 (80 entries) bios0: vendor LENOVO version "7VET80WW (3.10 )" date 10/02/2009 bios0: LENOVO 406257G acpi0 at bios0: rev 2 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP SSDT ECDT APIC MCFG HPET SLIC BOOT SSDT SSDT SSDT SSDT acpi0: wakeup devices LID_(S3) SLPB(S3) UART(S3) IGBE(S4) EXP0(S4) EXP1(S4) EXP2(S4) EXP3(S4) EXP4(S4) PCI1(S4) USB0(S3) USB3(S3) USB5(S3) EHC0(S3) EHC1(S3) HDEF(S4) acpitimer0 at acpi0: 3579545 Hz, 24 bits acpiec0 at acpi0 acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Core(TM)2 Duo CPU T9600 @ 2.80GHz, 798.13 MHz cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,XSAVE,NXE,LONG,LAHF,PERF cpu0: 6MB 64b/line 16-way L2 cache cpu0: smt 0, core 0, package 0 cpu0: apic clock running at 266MHz cpu at mainbus0: not configured ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 20, 24 pins ioapic0: misconfigured as apic 2, remapped to apid 1 acpimcfg0 at acpi0 addr 0xe0000000, bus 0-63 acpihpet0 at acpi0: 14318179 Hz acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus -1 (AGP_) acpiprt2 at acpi0: bus 2 (EXP0) acpiprt3 at acpi0: bus 3 (EXP1) acpiprt4 at acpi0: bus 4 (EXP2) acpiprt5 at acpi0: bus 5 (EXP3) acpiprt6 at acpi0: bus 13 (EXP4) acpiprt7 at acpi0: bus 21 (PCI1) acpicpu0 at acpi0: C3, C2, C1, PSS acpipwrres0 at acpi0: PUBS acpitz0 at acpi0: critical temperature is 127 degC acpitz1 at acpi0: critical temperature is 100 degC acpibtn0 at acpi0: LID_ acpibtn1 at acpi0: SLPB acpibat0 at acpi0: BAT0 model "42T4620" serial 929 type LION oem "Panasonic" acpibat1 at acpi0: BAT1 not present acpiac0 at acpi0: AC unit online acpithinkpad0 at acpi0 acpidock0 at acpi0: GDCK not docked (0) cpu0: Enhanced SpeedStep 798 MHz: speeds: 2801, 2800, 2133, 1600, 800 MHz pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel GM45 Host" rev 0x07 vga1 at pci0 dev 2 function 0 "Intel GM45 Video" rev 0x07 intagp0 at vga1 agp0 at intagp0: aperture at 0xd0000000, size 0x10000000 inteldrm0 at vga1 drm0 at inteldrm0 inteldrm0: 1920x1200 wsdisplay0 at vga1 mux 1: console (std, vt100 emulation) wsdisplay0: screen 1-5 added (std, vt100 emulation) "Intel GM45 Video" rev 0x07 at pci0 dev 2 function 1 not configured "Intel GM45 HECI" rev 0x07 at pci0 dev 3 function 0 not configured em0 at pci0 dev 25 function 0 "Intel ICH9 IGP M" rev 0x03: msi, address 00:22:68:18:b1:0f uhci0 at pci0 dev 26 function 0 "Intel 82801I USB" rev 0x03: apic 1 int 20 uhci1 at pci0 dev 26 function 1 "Intel 82801I USB" rev 0x03: apic 1 int 21 uhci2 at pci0 dev 26 function 2 "Intel 82801I USB" rev 0x03: apic 1 int 22 ehci0 at pci0 dev 26 function 7 "Intel 82801I USB" rev 0x03: apic 1 int 23 usb0 at ehci0: USB revision 2.0 uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 azalia0 at pci0 dev 27 function 0 "Intel 82801I HD Audio" rev 0x03: msi azalia0: codecs: Conexant CX20561, 0x0000/0x0000, using Conexant CX20561 audio0 at azalia0 ppb0 at pci0 dev 28 function 0 "Intel 82801I PCIE" rev 0x03: msi pci1 at ppb0 bus 2 ppb1 at pci0 dev 28 function 1 "Intel 82801I PCIE" rev 0x03: msi pci2 at ppb1 bus 3 iwn0 at pci2 dev 0 function 0 "Intel WiFi Link 5100" rev 0x00: msi, MIMO 1T2R, MoW, address 00:26:c6:41:b8:2e ppb2 at pci0 dev 28 function 2 "Intel 82801I PCIE" rev 0x03: msi pci3 at ppb2 bus 4 "Intel Turbo Memory" rev 0x11 at pci3 dev 0 function 0 not configured ppb3 at pci0 dev 28 function 3 "Intel 82801I PCIE" rev 0x03: msi pci4 at ppb3 bus 5 ppb4 at pci0 dev 28 function 4 "Intel 82801I PCIE" rev 0x03: msi pci5 at ppb4 bus 13 uhci3 at pci0 dev 29 function 0 "Intel 82801I USB" rev 0x03: apic 1 int 16 uhci4 at pci0 dev 29 function 1 "Intel 82801I USB" rev 0x03: apic 1 int 17 uhci5 at pci0 dev 29 function 2 "Intel 82801I USB" rev 0x03: apic 1 int 18 ehci1 at pci0 dev 29 function 7 "Intel 82801I USB" rev 0x03: apic 1 int 19 usb1 at ehci1: USB revision 2.0 uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1 ppb5 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0x93 pci6 at ppb5 bus 21 cbb0 at pci6 dev 0 function 0 "Ricoh 5C476 CardBus" rev 0xba: apic 1 int 16 sdhc0 at pci6 dev 0 function 2 "Ricoh 5C822 SD/MMC" rev 0x21: apic 1 int 18 sdmmc0 at sdhc0 "Ricoh 5C843 MMC" rev 0x11 at pci6 dev 0 function 3 not configured "Ricoh 5C592 Memory Stick" rev 0x11 at pci6 dev 0 function 4 not configured "Ricoh 5C852 xD" rev 0x11 at pci6 dev 0 function 5 not configured cardslot0 at cbb0 slot 0 flags 0 cardbus0 at cardslot0: bus 22 device 0 cacheline 0x10, lattimer 0xb0 pcmcia0 at cardslot0 pcib0 at pci0 dev 31 function 0 "Intel 82801IBM LPC" rev 0x03 ahci0 at pci0 dev 31 function 2 "Intel 82801I AHCI" rev 0x03: msi, AHCI 1.2 scsibus0 at ahci0: 32 targets sd0 at scsibus0 targ 0 lun 0: <ATA, ST9500420AS, 0003> SCSI3 0/direct fixed naa.5000c5001c185963 sd0: 476940MB, 512 bytes/sector, 976773168 sectors cd0 at scsibus0 targ 1 lun 0: <Optiarc, DVD RW AD-7910S, 1.D2> ATAPI 5/cdrom removable ichiic0 at pci0 dev 31 function 3 "Intel 82801I SMBus" rev 0x03: apic 1 int 23 iic0 at ichiic0 usb2 at uhci0: USB revision 1.0 uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb3 at uhci1: USB revision 1.0 uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb4 at uhci2: USB revision 1.0 uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb5 at uhci3: USB revision 1.0 uhub5 at usb5 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb6 at uhci4: USB revision 1.0 uhub6 at usb6 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb7 at uhci5: USB revision 1.0 uhub7 at usb7 "Intel UHCI root hub" rev 1.00/1.00 addr 1 isa0 at pcib0 isadma0 at isa0 pckbc0 at isa0 port 0x60/5 pckbd0 at pckbc0 (kbd slot) pckbc0: using irq 1 for kbd slot wskbd0 at pckbd0: console keyboard, using wsdisplay0 pms0 at pckbc0 (aux slot) pckbc0: using irq 12 for aux slot wsmouse0 at pms0 mux 0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 aps0 at isa0 port 0x1600/31 mtrr: Pentium Pro MTRR support ugen0 at uhub3 port 2 "Lenovo Computer Corp ThinkPad Bluetooth with Enhanced Data Rate II" rev 2.00/3.99 addr 2 ugen1 at uhub7 port 2 "Lenovo Integrated Smart Card Reader" rev 2.00/1.00 addr 2 vscsi0 at root scsibus1 at vscsi0: 256 targets softraid0 at root scsibus2 at softraid0: 256 targets root on sd0a (42a595d9d805c358.a) swap on sd0b dump on sd0b WARNING: / was not properly unmounted ugen0 detached ugen1 detached ugen0 at uhub3 port 2 "Lenovo Computer Corp ThinkPad Bluetooth with Enhanced Data Rate II" rev 2.00/3.99 addr 2 ugen1 at uhub7 port 2 "Lenovo Integrated Smart Card Reader" rev 2.00/1.00 addr 2 pid 1641 (mangle): user write of 4096@0x6fbc2c2c000 at 255832 failed: 14 Ext2 fs: unsupported revision number: 95 /dev/vnd0c: file system not clean; please fsck(8) uid 0 on /mnt/test: out of inodes uid 0 on /mnt/test: out of inodes uid 0 on /mnt/test: out of inodes uid 0 on /mnt/test: out of inodes uid 0 on /mnt/test: out of inodes bad directory entry: inode out of bounds offset=12, inode=3080194, rec_len=1012, name_len=2 panic: ext2fs_dirbadentry Stopped at Debugger+0x5: leave RUN AT LEAST 'trace' AND 'ps' AND INCLUDE OUTPUT WHEN REPORTING THIS PANIC! DO NOT EVEN BOTHER REPORTING THIS WITHOUT INCLUDING THAT INFORMATION! ddb> Debugger() at Debugger+0x5 panic() at panic+0xe4 ext2fs_lookup() at ext2fs_lookup+0x68f VOP_LOOKUP() at VOP_LOOKUP+0x2c vfs_lookup() at vfs_lookup+0x271 namei() at namei+0x21c vn_open() at vn_open+0x91 doopenat() at doopenat+0x125 syscall() at syscall+0x162 --- syscall (number 5) --- end of kernel end trace frame: 0xffffffff, count: -9 acpi_pdirpa+0x4253fa: ddb> PID PPID PGRP UID S FLAGS WAIT COMMAND *11952 27679 27679 0 7 0 ls 27679 8995 27679 0 3 0x88 pause sh 12495 4635 16885 1000 3 0x4100080 kqread soffice.bin 29264 4635 16885 1000 3 0x4100080 netcon soffice.bin 15871 4635 16885 1000 3 0x4100080 thrsleep soffice.bin 13049 23194 13049 1000 3 0x80 ttyin ksh 23194 1 23194 1000 3 0x80 kqread tmux 7048 3799 7048 1000 3 0x80 kqread tmux 32134 4635 16885 1000 3 0x80 poll soffice.bin 32538 30093 16885 1000 3 0x4100080 wait oosplash 3799 30093 3799 1000 3 0x80 select xterm 8962 30093 16885 1000 3 0x4100080 thrsleep oosplash 30367 1 15957 1000 3 0x80 poll autocutsel 15105 1 4994 1000 3 0x80 poll autocutsel 3305 30093 16885 1000 3 0x80 poll xclock 4635 30093 16885 1000 3 0x80 thrsleep oosplash 26894 30093 16885 1000 3 0x80 select xbattbar 27871 1 4396 1000 3 0x80 select xbindkeys 1927 30093 16885 1000 3 0x80 select xidle 30093 16885 16885 1000 3 0x80 select cwm 25981 1 25981 1000 3 0x80 select ssh-agent 16885 20779 16885 1000 3 0x88 pause sh 10089 1 10089 77 3 0x80 poll dhclient 11631 1 11631 0 3 0x80 poll dhclient 20779 16733 20779 0 3 0x80 wait xdm 2394 30205 30205 0 3 0x80 netio Xorg 13093 1 13093 0 3 0x80 ttyin getty 19219 1 19219 0 3 0x80 ttyin getty 19159 1 19159 0 3 0x80 ttyin getty 29985 1 29985 0 3 0x80 ttyin getty 8995 1 8995 1000 3 0x88 pause ksh 30205 16733 30205 35 3 0x80 select Xorg 16733 1 16733 0 3 0x88 pause xdm 23460 1 23460 0 3 0x80 select cron 18470 1 18470 0 3 0x80 htplev hotplugd 3142 1 3142 0 2 0x480 apmd 14323 1 26371 0 3 0x4100080 nanosleep pcscd 4792 1 26371 0 3 0x4100080 nanosleep pcscd 28982 1 26371 0 3 0x80 select pcscd 23778 1 361 1000 3 0x4100080 thrsleep mpd 6715 1 361 1000 3 0x4100080 thrsleep mpd 8558 1 1647 566 3 0x80 kqread tor 21466 1 21466 548 3 0x80 poll polipo 278 1 5535 1000 3 0x4100080 thrsleep btpd 19804 1 5535 1000 3 0x80 kqread btpd 19834 1 361 1000 3 0x4100080 thrsleep mpd 14013 1 361 1000 3 0x4100080 thrsleep mpd 17279 1 361 1000 3 0x4100080 poll mpd 361 1 361 1000 3 0x80 poll mpd 24297 1 24297 99 3 0x80 poll sndiod 29656 1 29656 0 3 0x80 select lpd 6884 1 6884 0 3 0x80 select sshd 6834 470 470 100 3 0x80 kqread ldapd 470 1 470 0 3 0x80 kqread ldapd 30569 5298 23936 83 3 0x80 poll ntpd 5298 23936 23936 83 3 0x80 poll ntpd 23936 1 23936 0 3 0x80 poll ntpd 22421 21144 21144 74 3 0x80 bpf pflogd 21144 1 21144 0 3 0x80 netio pflogd 24719 1804 1804 73 2 0x80 syslogd 1804 1 1804 0 3 0x80 netio syslogd 24028 1 24028 0 3 0x80 mfsidl mount_mfs 15 0 0 0 3 0x100200 aiodoned aiodoned 14 0 0 0 3 0x100200 syncer update 13 0 0 0 3 0x100200 cleaner cleaner 12 0 0 0 3 0x100200 reaper reaper 11 0 0 0 3 0x100200 pgdaemon pagedaemon 10 0 0 0 3 0x100200 bored crypto 9 0 0 0 3 0x100200 pftm pfpurge 8 0 0 0 3 0x100200 mmctsk sdmmc0 7 0 0 0 3 0x100200 usbtsk usbtask 6 0 0 0 3 0x100200 usbatsk usbatsk 5 0 0 0 3 0x100200 bored intelrel 4 0 0 0 3 0x40100200 acpi0 acpi0 3 0 0 0 3 0x100200 bored syswq 2 0 0 0 3 0x40100200 idle0 1 0 1 0 3 0x80 wait init 0 -1 0 0 3 0x200 scheduler swapper 7595 7048 7048 1000 5 0x2000 tmux ddb> ds 0xe84c acpi_pdirpa+0xa2ec es 0xd fs 0xf8c0 acpi_pdirpa+0xb360 gs 0xb40d acpi_pdirpa+0x6ead rdi 0x1 rsi 0 rbp 0xffff800032daf8b0 rbx 0xffffffff8177b40d mfs_vfsops+0x102d rdx 0 rcx 0x292 rax 0x1 r8 0xffff800032daf7d0 r9 0xffff80002573b000 r10 0xffffffff r11 0x1 r12 0x100 r13 0xffff800032daf8c0 r14 0xc r15 0xffff800032dafdb8 rip 0xffffffff813a3d25 Debugger+0x5 cs 0x8 rflags 0x202 rsp 0xffff800032daf8b0 ss 0x10 Debugger+0x5: leave ddb> No such command ddb> ehci0: reset timeout ehci1: reset timeout rebooting... -- sergeyb@