From: bugzilla-daemon@bugzilla.kernel.org
To: linuxppc-dev@lists.ozlabs.org
Subject: [Bug 215169] New: UBSAN: shift-out-of-bounds in arch/powerpc/mm/kasan/book3s_32.c:22:23
Date: Mon, 29 Nov 2021 20:06:48 +0000 [thread overview]
Message-ID: <bug-215169-206035@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=215169
Bug ID: 215169
Summary: UBSAN: shift-out-of-bounds in
arch/powerpc/mm/kasan/book3s_32.c:22:23
Product: Platform Specific/Hardware
Version: 2.5
Kernel Version: 5.15.5
Hardware: PPC-32
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: PPC-32
Assignee: platform_ppc-32@kernel-bugs.osdl.org
Reporter: erhard_f@mailbox.org
Regression: No
Created attachment 299777
--> https://bugzilla.kernel.org/attachment.cgi?id=299777&action=edit
dmesg (5.15.5, INLINE KASAN, PowerMac G4 DP)
Noticed another small glitch during 5.15.x testing. Happens when inline KASAN
is selected:
Total memory = 2048MB; using 4096kB for hash table
Activating Kernel Userspace Access Protection
Linux version 5.15.5-gentoo-PowerMacG4 (root@T1000) (gcc (Gentoo 11.2.0 p1)
11.2.0, GNU ld (Gentoo 2.37_p1 p0) 2.37) #9 SMP Mon Nov 29 20:46:44 CET 2021
================================================================================
UBSAN: shift-out-of-bounds in arch/powerpc/mm/kasan/book3s_32.c:22:23
shift exponent -1 is negative
CPU: 0 PID: 0 Comm: swapper Not tainted 5.15.5-gentoo-PowerMacG4 #9
Call Trace:
[c214be60] [c0ba0048] dump_stack_lvl+0x80/0xb0 (unreliable)
[c214be80] [c0b99288] ubsan_epilogue+0x10/0x5c
[c214be90] [c0b98fe0] __ubsan_handle_shift_out_of_bounds+0x94/0x138
[c214bf00] [c1c0f010] kasan_init_region+0xd8/0x26c
[c214bf30] [c1c0ed84] kasan_init+0xc0/0x198
[c214bf70] [c1c08024] setup_arch+0x18/0x54c
[c214bfc0] [c1c037f0] start_kernel+0x90/0x33c
[c214bff0] [00003610] 0x3610
================================================================================
setbat: no BAT available for mapping 0x1c000000
KASAN init done
[...]
The other UBSAN complaint in the netconsole.log is bug #214867.
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next reply other threads:[~2021-11-29 20:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-29 20:06 bugzilla-daemon [this message]
2021-11-29 20:09 ` [Bug 215169] UBSAN: shift-out-of-bounds in arch/powerpc/mm/kasan/book3s_32.c:22:23 bugzilla-daemon
2022-02-04 14:57 ` bugzilla-daemon
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