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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-01-19 12:28:53 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-01-19 12:28:53 -0800 |
| commit | a03df4ec37291de74987e4fbfbbcaebb5a8f9a2e (patch) | |
| tree | 1bc151a43726aa3b42867e5cabf52f50083a432c /arch | |
| parent | 46f0cba31ccc28cfb3e65d0ab49a9a7e58c0ef9f (diff) | |
| parent | 41e1992665a2701fa025a8b76970c43b4148446f (diff) | |
Merge tag 's390-6.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 build fix from Heiko Carstens:
- Workaround invalid gcc-11 out of bounds read warning caused by s390's
S390_lowcore definition. This happens only with gcc 11.1.0 and
11.2.0.
The code which causes this warning will be gone with the next merge
window. Therefore just replace the memcpy() with a for loop to get
rid of the warning.
* tag 's390-6.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: workaround invalid gcc-11 out of bounds read warning
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kernel/setup.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 2b6091349daa..696c9e007a36 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -508,6 +508,7 @@ static void __init setup_lowcore_dat_on(void) { struct lowcore *abs_lc; unsigned long flags; + int i; __ctl_clear_bit(0, 28); S390_lowcore.external_new_psw.mask |= PSW_MASK_DAT; @@ -523,8 +524,8 @@ static void __init setup_lowcore_dat_on(void) abs_lc = get_abs_lowcore(&flags); abs_lc->restart_flags = RESTART_FLAG_CTLREGS; abs_lc->program_new_psw = S390_lowcore.program_new_psw; - memcpy(abs_lc->cregs_save_area, S390_lowcore.cregs_save_area, - sizeof(abs_lc->cregs_save_area)); + for (i = 0; i < 16; i++) + abs_lc->cregs_save_area[i] = S390_lowcore.cregs_save_area[i]; put_abs_lowcore(abs_lc, flags); } |