On Sun, 8 Feb 2009, Rafael J. Wysocki wrote: > This message has been generated automatically as a part of a report > of recent regressions. > > The following bug entry is on the current list of known regressions > from 2.6.28. Please verify if it still should be listed and let me know > (either way). > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12667 > Subject : Badness at kernel/time/timekeeping.c:98 in pmud (timekeeping_suspended) > Submitter : Paul Collins <paul@xxxxxxxxxxxxxxxxxxx> > Date : 2009-01-21 7:15 (19 days old) > First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1c5745aa380efb6417b5681104b007c8612fb496 First bad commit ? The commit adds a WARN_ON to getnstimeofday() when it is called while timekeeping is suspended. So instead of pointing to that commit can we please figure out WTF this happens? Looking at the call stack this is pretty obvious: [ee4fdc80] [c0053b10] do_gettimeofday+0x1c/0x58 [ee4fdcb0] [c0348868] evdev_event+0x28/0x158 [ee4fdce0] [c0340ce4] input_pass_event+0xac/0xb0 [ee4fdd00] [c0343a44] input_event+0x80/0x98 [ee4fdd20] [c02f6d24] via_pmu_event+0x88/0x8c [ee4fdd30] [c02f4f60] via_pmu_interrupt+0x6e0/0xb2c [ee4fdd90] [c02f5664] pmu_wait_complete+0x50/0x84 [ee4fddb0] [c02f6764] powerbook_sleep+0x9f0/0xb24 [ee4fde40] [c00607f8] suspend_devices_and_enter+0x10c/0x180 [ee4fde60] [c0060a1c] enter_state+0x11c/0x160 [ee4fde80] [c02f4404] pmu_ioctl+0x15c/0x24c [ee4fde90] [c00bab04] vfs_ioctl+0x8c/0x90 [ee4fdea0] [c00babb8] do_vfs_ioctl+0x8c/0x70c [ee4fdf10] [c00bb2d4] sys_ioctl+0x9c/0xa4 [ee4fdf40] [c0012eb8] ret_from_syscall+0x0/0x38 powerbook_sleep() calls into the event interface which calls gettimeofday() _AFTER_ timekeeping was suspended already so the WARN_ON triggers. Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
