6b...@6bone.informatik.uni-leipzig.de writes:
>newfs -m 1 -O 2 -o space -q user -q group /dev/dk1
>/dev/rdk1: 267036672.0MB (546891104184 sectors) block size 32768, fragment
>size 4096
> using 303430 cylinder groups of 880.06MB, 28162 blks, 7168 inodes.
>super-block backups (for fsck_ffs -b #) at:
>192, 1802560, 3604928, 5407296, 7209664, 9012032, 10814400, 12616768, 14419136,
>..............................................................................
>fsck -f /dev/dk1
>** /dev/rdk1
>** File system is already clean
>fsck: /dev/rdk1: Segmentation fault
>(A core file is created. However, there is no error message. Dmesg also
>provides no information.)
The segfault can be reproduced:
(gdb) where
#0 0x00007c0fe318268c in memset () from /lib/libc.so.12
#1 0x00000000e581131b in __memset_ichk (len=8545173504, src=0,
dst=<optimized out>)
at /home/netbsd10/destdir.amd64/usr/include/ssp/string.h:84
#2 setup (dev=dev@entry=0x7c0fe3d5d000 "./testimage",
origdev=origdev@entry=0x7c0fe3d5d000 "./testimage")
at /home/netbsd10/src/sbin/fsck_ffs/setup.c:504
#3 0x00000000e580815e in checkfilesys (
filesys=filesys@entry=0x7c0fe3d5d000 "./testimage",
origfs=origfs@entry=0x7c0fe3d5d000 "./testimage", child=0)
at /home/netbsd10/src/sbin/fsck_ffs/main.c:397
#4 0x00000000e5818500 in main (argc=<optimized out>, argv=0x7f7fffe8a6a0)
at /home/netbsd10/src/sbin/fsck_ffs/main.c:336
/*
* allocate and initialize the necessary maps
*/
bmapsize = roundup(howmany(maxfsblock, NBBY), sizeof(int16_t));
blockmap = aligned_alloc(DEV_BSIZE, (unsigned)bmapsize);
if (blockmap == NULL) {
pwarn("cannot alloc %u bytes for blockmap\n",
(unsigned)bmapsize);
goto badsblabel;
}
memset(blockmap, 0, bmapsize);
with:
(gdb) print bmapsize
$1 = 8545173504
but:
(gdb) print (unsigned)bmapsize
$3 = 4250206208
This helps:
Index: sbin/fsck_ffs/setup.c
===================================================================
RCS file: /cvsroot/src/sbin/fsck_ffs/setup.c,v
retrieving revision 1.104.2.2
diff -p -u -r1.104.2.2 setup.c
--- sbin/fsck_ffs/setup.c 13 May 2023 11:54:17 -0000 1.104.2.2
+++ sbin/fsck_ffs/setup.c 17 Jun 2025 05:37:30 -0000
@@ -87,7 +87,7 @@ setup(const char *dev, const char *origd
{
uint32_t cg;
long size, asked, i, j;
- long bmapsize;
+ size_t bmapsize;
struct disk_geom geo;
struct dkwedge_info dkw;
off_t sizepb;
@@ -495,10 +495,10 @@ setup(const char *dev, const char *origd
* allocate and initialize the necessary maps
*/
bmapsize = roundup(howmany(maxfsblock, NBBY), sizeof(int16_t));
- blockmap = aligned_alloc(DEV_BSIZE, (unsigned)bmapsize);
+ blockmap = aligned_alloc(DEV_BSIZE, bmapsize);
if (blockmap == NULL) {
- pwarn("cannot alloc %u bytes for blockmap\n",
- (unsigned)bmapsize);
+ pwarn("cannot alloc %zu bytes for blockmap\n",
+ bmapsize);
goto badsblabel;
}
memset(blockmap, 0, bmapsize);
N.B. fsck takes about 9GB RAM for the empty filesystem of that size.
Greetings,
