I enabled a few kernel debug tests. CONFIG_ATOMIC64_SELFTEST=y
triggers a bug:
Brought up 1 CPUs
------------[ cut here ]------------
kernel BUG at lib/atomic64_test.c:45!
YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00001000000001001000111000001111 Not tainted
r00-03 000000ff08048e0f 000000004065a5c0 000000004011b024 000000004068c8f8
r04-07 000000004063d5c0 0000000000000000 00000000405a300c 00000000405ff9a0
r08-11 000000004068f3c0 00000000405252b0 0000000000000001 0000000000000000
r12-15 000000004068f3c0 000000004065a5c0 ffffffffc0000000 0000000000000081
r16-19 000000004064b5c0 000000007f0732a0 0000000000000000 0000000000000001
r20-23 aaa31337c001d00d 0000000000000001 0000000040596ec0 0000000000000080
r24-27 0000000000000020 0000000000000020 00000000405ff9a0 000000004063d5c0
r28-31 0000000040596ec0 000000007f08c200 000000007f08c270 000000000800000f
sr00-03 0000000000000000 0000000000000000 0000000000000000 0000000000000000
sr04-07 0000000000000000 0000000000000000 0000000000000000 0000000000000000
IASQ: 0000000000000000 0000000000000000 IAOQ: 0000000040674fc4 0000000040674fc8
IIR: 03ffe01f ISR: 0000000010240000 IOR: 0000000165996ec0
CPU: 0 CR30: 000000007f08c000 CR31: 886904b488140042
ORIG_R28: 0000000040118c1c
IAOQ[0]: test_atomic64+0x28c/0x290
IAOQ[1]: pci_sort_bf_cmp+0x0/0x48
RP(r2): do_one_initcall+0x4c/0x1e0
INIT(v0);
r += onestwos;
=> BUG_ON(atomic64_add_return(onestwos, &v) != r);
BUG_ON(v.counter != r);
Dave
--
J. David Anglin dave.anglin@xxxxxxxxxxxxxx
National Research Council of Canada (613) 990-0752 (FAX: 952-6602)
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