From: bugzilla-daemon@bugzilla.kernel.org
To: linuxppc-dev@lists.ozlabs.org
Subject: [Bug 206525] New: BUG: KASAN: stack-out-of-bounds in test_bit+0x30/0x44 (kernel 5.6-rc1)
Date: Thu, 13 Feb 2020 20:07:46 +0000 [thread overview]
Message-ID: <bug-206525-206035@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=206525
Bug ID: 206525
Summary: BUG: KASAN: stack-out-of-bounds in test_bit+0x30/0x44
(kernel 5.6-rc1)
Product: Platform Specific/Hardware
Version: 2.5
Kernel Version: 5.6.0-rc1
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 287357
--> https://bugzilla.kernel.org/attachment.cgi?id=287357&action=edit
dmesg (5.6.0-rc1 + v2 Fix DSI and ISI... patch, PowerMac G4 DP)
[...]
Feb 13 20:18:53 T600 kernel:
==================================================================
Feb 13 20:18:53 T600 kernel: BUG: KASAN: stack-out-of-bounds in
test_bit+0x30/0x44
Feb 13 20:18:53 T600 kernel: Read of size 4 at addr ee8bddac by task systemd/1
Feb 13 20:18:53 T600 kernel:
Feb 13 20:18:53 T600 kernel: CPU: 0 PID: 1 Comm: systemd Tainted: G W
5.6.0-rc1-PowerMacG4+ #20
Feb 13 20:18:53 T600 kernel: Call Trace:
Feb 13 20:18:53 T600 kernel: [ee8bdc38] [c078cf18] dump_stack+0xbc/0x118
(unreliable)
Feb 13 20:18:53 T600 kernel: [ee8bdc68] [c0249f94]
print_address_description.isra.0+0x3c/0x420
Feb 13 20:18:53 T600 kernel: [ee8bdcf8] [c024a554] __kasan_report+0x138/0x180
Feb 13 20:18:53 T600 kernel: [ee8bdd38] [c0249718] kasan_report+0x7c/0x104
Feb 13 20:18:53 T600 kernel: [ee8bdd58] [c06526b4] test_bit+0x30/0x44
Feb 13 20:18:53 T600 kernel: [ee8bdd78] [c0657c6c] netlink_bind+0x24c/0x33c
Feb 13 20:18:53 T600 kernel: [ee8bde18] [c05c0c3c] __sys_bind+0xd4/0x120
Feb 13 20:18:53 T600 kernel: [ee8bdf38] [c001a278] ret_from_syscall+0x0/0x34
Feb 13 20:18:53 T600 kernel: --- interrupt: c01 at 0x4f3ea8
LR = 0x8f5b80
Feb 13 20:18:53 T600 kernel:
Feb 13 20:18:53 T600 kernel: The buggy address belongs to the page:
Feb 13 20:18:53 T600 kernel: page:ef460a94 refcount:0 mapcount:0
mapping:00000000 index:0x0
Feb 13 20:18:53 T600 kernel: flags: 0x0()
Feb 13 20:18:53 T600 kernel: raw: 00000000 ef460a98 ef460a98 00000000 00000000
00000000 ffffffff 00000000
Feb 13 20:18:53 T600 kernel: raw: 00000000
Feb 13 20:18:53 T600 kernel: page dumped because: kasan: bad access detected
Feb 13 20:18:53 T600 kernel:
Feb 13 20:18:53 T600 kernel: addr ee8bddac is located in stack of task
systemd/1 at offset 36 in frame:
Feb 13 20:18:53 T600 kernel: netlink_bind+0x0/0x33c
Feb 13 20:18:53 T600 kernel:
Feb 13 20:18:53 T600 kernel: this frame has 1 object:
Feb 13 20:18:53 T600 kernel: [32, 36) 'groups'
Feb 13 20:18:53 T600 kernel:
Feb 13 20:18:53 T600 kernel: Memory state around the buggy address:
Feb 13 20:18:53 T600 kernel: ee8bdc80: 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00
Feb 13 20:18:53 T600 kernel: ee8bdd00: 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00
Feb 13 20:18:53 T600 kernel: >ee8bdd80: 00 f1 f1 f1 f1 04 f3 f3 f3 00 00 00 00
00 00 00
Feb 13 20:18:53 T600 kernel: ^
Feb 13 20:18:53 T600 kernel: ee8bde00: 00 00 00 00 00 f1 f1 f1 f1 04 f2 04 f2
00 00 00
Feb 13 20:18:53 T600 kernel: ee8bde80: 00 00 00 00 00 00 00 00 00 00 00 00 00
f3 f3 f3
Feb 13 20:18:53 T600 kernel:
==================================================================
Happens on my G4 DP with kernel 5.6.0-rc1 and KASAN enabled (outline) during
boot. kernel is patched with Christophe's '[v2] powerpc/32s: Fix DSI and ISI
exceptions for CONFIG_VMAP_STACK' (https://patchwork.ozlabs.org/patch/1237387/)
but CONFIG_VMAP_STACK was not used here.
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next reply other threads:[~2020-02-13 20:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-13 20:07 bugzilla-daemon [this message]
2020-02-13 20:12 ` [Bug 206525] BUG: KASAN: stack-out-of-bounds in test_bit+0x30/0x44 (kernel 5.6-rc1) bugzilla-daemon
2020-02-14 10:04 ` bugzilla-daemon
2020-02-15 17:52 ` bugzilla-daemon
2020-02-16 8:26 ` bugzilla-daemon
2020-02-17 10:53 ` bugzilla-daemon
2020-02-17 11:52 ` bugzilla-daemon
2020-02-20 12:19 ` bugzilla-daemon
2020-02-26 21:44 ` bugzilla-daemon
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