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List:       openbsd-bugs
Subject:    ffs_blkfree: freeing free block
From:       Jerome Ibanes <jibanes () gmail ! com>
Date:       2021-01-09 1:12:27
Message-ID: CAB+41mFS6U6E5=S909wHjBq4PRLJpEhri5jAHofkJ+-zOXCqfA () mail ! gmail ! com
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OpenBSD 6.8/i386 GENERIC
real mem  = 536363008 (511MB)
avail mem = 510287872 (486MB)
cpu0 at mainbus0: (uniprocessor)
cpu0: Geode(TM) Integrated Processor by AMD PCS ("AuthenticAMD" 586-class)
500 MHz, 05-0a-02
cpu0: FPU,DE,PSE,TSC,MSR,CX8,SEP,PGE,CMOV,CFLUSH,MMX,MMXX,3DNOW2,3DNOW

sea-net-002# df -kh .
Filesystem     Size    Used   Avail Capacity  Mounted on
/dev/wd0a     1024M   1023M  -51.0M   105%    /
sea-net-002# ls -lah
total 1584936
drwxr-xr-x  2 _suricata  _suricata   512B Jan  1 16:20 .
drwxr-xr-x  4 root       wheel       1.0K Jan  8 16:58 ..
-rw-rw-r--  1 root       _suricata   655M Jan  8 16:58 eve.json
-rw-rw-r--  1 root       _suricata     0B Jan  1 16:20 fast.log
-rw-rw-r--  1 root       _suricata   118M Jan  8 16:58 stats.log
sea-net-002# cat /dev/null > eve.json
[... lost connectivity to the host... ]

The rest is from the serial console:

dev = 0x0, block = 85520, fs = /
panic: ffs_blkfree: freeing free block
Stopped at      db_enter+0x4:   popl    %ebp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*421812  80411      0    0x100003          0    0  ksh
db_enter() at db_enter+0x4
panic(d0bf0a66) at panic+0xd3
ffs_blkfree(f5793c68,47810,0) at ffs_blkfree+0x828
ffs_indirtrunc(f5793c68,ffff87f4,ffffffff,1357a0,0,ffffffff) at
ffs_indirtrunc+
0x34a
ffs_indirtrunc(f5793c68,fffff7f3,ffffffff,141ee0,0,ffffffff) at
ffs_indirtrunc+
0x30a
ffs_truncate(f5793c68,0,0,0) at ffs_truncate+0xbb2
ufs_setattr(f5adc458) at ufs_setattr+0x2ab
VOP_SETATTR(d1fe7300,f5adc4a0,d2277240,f5f16dc8) at VOP_SETATTR+0x47
vn_open(f5adc550,602,1a4) at vn_open+0x26a
doopenat(f5f16dc8,ffffff9c,49f50e68,601,1b6,f5adc6b8) at doopenat+0x16e
sys_open(f5f16dc8,f5adc6c0,f5adc6b8) at sys_open+0x1b
syscall(f5adc700) at syscall+0x28e
Xsyscall_untramp() at Xsyscall_untramp+0xa9
end of kernel
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports.  Insufficient info makes it difficult to find and fix bugs.

Hope this helps, thanks for looking.
J.
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