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Date: Thu, 29 May 2008 23:25:53 +0100 From: Sitsofe Wheeler <sitsofe@...oo.com> To: linux-kernel@...r.kernel.org Cc: kernel-testers@...r.kernel.org Subject: [X86] Watchdog lockdep warning with next-20080529 <posted & mailed> While using linux-next-20080529 the following warning was printed: [ 1108.103357] ------------[ cut here ]------------ [ 1108.103370] WARNING: at kernel/lockdep.c:2680 check_flags+0x8a/0x12d() [ 1108.103377] Modules linked in: [ 1108.103384] Pid: 5, comm: watchdog/0 Not tainted 2.6.26-rc4-next-20080529skw #134 [ 1108.103392] [<c0122f80>] warn_on_slowpath+0x41/0x6a [ 1108.103402] [<c013cc30>] ? trace_hardirqs_off+0xb/0xd [ 1108.103411] [<c013ea60>] ? trace_hardirqs_on+0xb/0xd [ 1108.103419] [<c013ea19>] ? trace_hardirqs_on_caller+0xe8/0x124 [ 1108.103428] [<c013ea60>] ? trace_hardirqs_on+0xb/0xd [ 1108.103436] [<c011d428>] ? hrtick_set+0xce/0xd6 [ 1108.103445] [<c013c87e>] check_flags+0x8a/0x12d [ 1108.103452] [<c013f9a0>] lock_acquire+0x3b/0x89 [ 1108.103459] [<c0361ada>] _read_lock+0x1c/0x49 [ 1108.103467] [<c01538b2>] ? watchdog+0x97/0x1a9 [ 1108.103475] [<c015381b>] ? watchdog+0x0/0x1a9 [ 1108.103483] [<c01538b2>] watchdog+0x97/0x1a9 [ 1108.103489] [<c015381b>] ? watchdog+0x0/0x1a9 [ 1108.103497] [<c0133044>] kthread+0x3b/0x63 [ 1108.103504] [<c0133009>] ? kthread+0x0/0x63 [ 1108.103512] [<c01038ab>] kernel_thread_helper+0x7/0x10 [ 1108.103520] ======================= [ 1108.103525] ---[ end trace bf12fd91b8f59e65 ]--- [ 1108.103529] possible reason: unannotated irqs-on. [ 1108.103534] irq event stamp: 18 [ 1108.103538] hardirqs last enabled at (17): [<c013ea60>] trace_hardirqs_on+0xb/0xd [ 1108.103548] hardirqs last disabled at (18): [<c013cc30>] trace_hardirqs_off+0xb/0xd [ 1108.103558] softirqs last enabled at (0): [<c01216ab>] copy_process+0x2dd/0xf9a [ 1108.103568] softirqs last disabled at (0): [<00000000>] 0x0 -- Sitsofe | http://sucs.org/~sits/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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