https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=191895
Bug ID: 191895
Summary: [ext2fs] [panic] ext2_dirbad: /mnt: bad dir ino 32787
at offset 6136: mangled entry
Product: Base System
Version: 11.0-CURRENT
Hardware: i386
OS: Any
Status: Needs Triage
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: p...@freebsd.org
Simple test of pristine file system causes panic:
bad directory entry: rec_len is smaller than minimal
offset=2040, inode=0, rec_len=8, name_len=0
panic: ext2_dirbad: /mnt: bad dir ino 32787 at offset 6136: mangled entry
cpuid = 0
KDB: stack backtrace:
db_trace_self_wrapper(c119dc1c,c1000a79,c91d7000,edbc24c8,c0957e01,...) at
db_trace_self_wrapper+0x2d/frame 0xedbc2498
kdb_backtrace(c135df3b,0,cb2dbd2f,edbc2554,edbc2600,...) at
kdb_backtrace+0x30/frame 0xedbc2500
vpanic(edbc2554,edbc2584,cb2cedc0,cb2dbd2f,c9f5e7c0,...) at vpanic+0x11d/frame
0xedbc253c
panic(cb2dbd2f,c9f5e7c0,8013,17f8,cb2dbd21,...) at panic+0x12/frame 0xedbc2548
ext2_dirbad(c8e72700,17f8,cb2dbd21,e8b3c000,edbc2664,...) at
ext2_dirbad+0x70/frame 0xedbc2584
ext2_search_dirblock(c8e72700,e8b3c000,edbc2664,c8e09000,c,...) at
ext2_search_dirblock+0x104/frame 0xedbc2600
ext2_htree_lookup(c8e72700,c8e09000,c,edbc2838,edbc2830,...) at
ext2_htree_lookup+0x2db/frame 0xedbc26e8
ext2_lookup_ino(caf1fb40,edbc2bb8,edbc2bcc,0,0,...) at
ext2_lookup_ino+0x24b/frame 0xedbc2864
ext2_lookup(edbc28e0,c1366687,c1448a30,caf1fb40,edbc28ac,...) at
ext2_lookup+0x3f/frame 0xedbc2888
VOP_CACHEDLOOKUP_APV(cb2dd8b8,edbc28e0,edbc2bcc,0,0,...) at
VOP_CACHEDLOOKUP_APV+0x12f/frame 0xedbc28b8
vfs_cache_lookup(edbc2970,c1366626,c11ce15d,c11aa383,c1448a30,...) at
vfs_cache_lookup+0xf4/frame 0xedbc2908
VOP_LOOKUP_APV(cb2dd8b8,edbc2970,edbc2bcc,205,8,...) at
VOP_LOOKUP_APV+0x12f/frame 0xedbc2938
lookup(edbc2b70,c11aa383,10c,cd,c0b70d91,...) at lookup+0x514/frame 0xedbc2998
namei(edbc2b70,c1fa0700,da,edbc2a74,c0b04ba0,...) at namei+0x4fd/frame
0xedbc2a30
vn_open_cred(edbc2b70,edbc2bfc,1b0,0,c8eed880,c8eabee0) at
vn_open_cred+0xb2/frame 0xedbc2b00
vn_open(edbc2b70,edbc2bfc,1b0,c8eabee0,bfbfe798,...) at vn_open+0x3d/frame
0xedbc2b28
kern_openat(c91d7000,ffffff9c,bfbfe798,0,601,1b0) at kern_openat+0x310/frame
0xedbc2c1c
sys_open(c91d7000,edbc2cc8,c1030f7f,e4734c90,0,...) at sys_open+0x39/frame
0xedbc2c40
syscall(edbc2d08) at syscall+0x31b/frame 0xedbc2cfc
Details @ http://people.freebsd.org/~pho/stress/log/ext2fs-2.txt
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