Hi,
Le 06/07/2026 à 21:27, Erhard Furtner a écrit :
Greetings!
I don't get this on my x86_64 machines, but on ppc32 (PowerMac G4 DP)
and on ppc64 (Talos II, POWER9) running Gentoo Linux. This dmesg snippet
is from the G4:
Total memory = 2048MB; using 4096kB for hash table
Activating Kernel Userspace Access Protection
Activating Kernel Userspace Execution Prevention
Linux version 7.2.0-rc2-PMacG4 (root@T1000) (gcc (Gentoo 15.3.0 p8)
15.3.0, GNU ld (Gentoo 2.46.0 p1) 2.46.0) #1 SMP PREEMPT Mon Jul 6
20:22:47 CEST 2026
[...]
test_bitmap: loaded.
test_bitmap: [lib/test_bitmap.c:397] bitmaps contents differ: expected
"1,3-4,9", got "1,3-4,9,65-71,73-79,81-87,89-95,97-99"
test_bitmap: parselist('0-2047:128/256'): 912
test_bitmap: scnprintf("%*pbl", '0-32767'): 5977
test_bitmap: test_bitmap_read_perf: 1191082
test_bitmap: test_bitmap_write_perf: 1270153
test_bitmap: failed 1 out of 208655 tests
On QEMU (pmac32_defconfig) I get:
test_bitmap: loaded.
test_bitmap: parselist('0-2047:128/256'): 2200
test_bitmap: scnprintf("%*pbl", '0-32767'): 26440
test_bitmap: test_bitmap_read_perf: 1819760
test_bitmap: test_bitmap_write_perf: 18189840
test_bitmap: all 208655 tests passed
On QEMU with your confirm I get:
[ 1.162486] test_bitmap: loaded.
[ 1.177069] test_bitmap: [lib/test_bitmap.c:397] bitmaps contents
differ: expected "1,3-4,9", got "1,3-4,9,65-71,73-79,81-87,89-95,97-99"
[ 1.180599] test_bitmap: parselist('0-2047:128/256'): 2920
[ 1.190105] test_bitmap: scnprintf("%*pbl", '0-32767'): 65560
[ 1.427378] test_bitmap: test_bitmap_read_perf: 9546321
[ 1.438769] test_bitmap: test_bitmap_write_perf: 9344481
[ 1.457679] test_bitmap: failed 1 out of 208655 tests
So there is something with your config
Full dmesg available at request. Kernel .config attached.
Regards,
Erhard
