LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
* 2.6.24-git: kmap_atomic() WARN_ON()
@ 2008-02-06 23:58 Thomas Gleixner
  2008-02-13 22:39 ` Rafael J. Wysocki
  2008-02-25 19:59 ` Björn Steinbrink
  0 siblings, 2 replies; 19+ messages in thread
From: Thomas Gleixner @ 2008-02-06 23:58 UTC (permalink / raw)
  To: Jeff Garzik; +Cc: LKML

current mainline triggers:

WARNING: at /home/tglx/work/kernel/x86/linux-2.6/arch/x86/mm/highmem_32.c:52 kmap_atomic_prot+0xe5/0x19b()
Modules linked in: ahci(+) sata_sil libata sd_mod scsi_mod raid1 ext3 jbd ehci_hcd ohci_hcd uhci_hcd
Pid: 0, comm: swapper Not tainted 2.6.24 #173
 [<c0126b60>] warn_on_slowpath+0x41/0x51
 [<c011c5eb>] ? __enqueue_entity+0x9c/0xa4
 [<c011c717>] ? enqueue_entity+0x124/0x13b
 [<c011cedb>] ? enqueue_task_fair+0x41/0x4c
 [<c032ce88>] ? _spin_lock_irqsave+0x14/0x2e
 [<c012e885>] ? lock_timer_base+0x1f/0x3e
 [<c011ad6d>] kmap_atomic_prot+0xe5/0x19b
 [<c011ae37>] kmap_atomic+0x14/0x16
 [<f88ea218>] ata_scsi_rbuf_get+0x1e/0x2c [libata]
 [<f88ea821>] atapi_qc_complete+0x23f/0x289 [libata]
 [<f88e3d00>] __ata_qc_complete+0x8e/0x93 [libata]
 [<f88e3fc7>] ata_qc_complete+0x115/0x128 [libata]
 [<f88e8d47>] ata_qc_complete_multiple+0x86/0xa0 [libata]
 [<f8841a5d>] ahci_interrupt+0x370/0x40d [ahci]
 [<c01512c6>] handle_IRQ_event+0x21/0x48
 [<c01521ca>] handle_edge_irq+0xc9/0x10a
 [<c0152101>] ? handle_edge_irq+0x0/0x10a
 [<c0107518>] do_IRQ+0x8b/0xb7
 [<c01055db>] common_interrupt+0x23/0x28
 [<c032007b>] ? init_chipset_cmd64x+0xb/0x93
 [<c010316e>] ? mwait_idle_with_hints+0x39/0x3d
 [<c0103172>] ? mwait_idle+0x0/0xf
 [<c010317f>] mwait_idle+0xd/0xf
 [<c0103761>] cpu_idle+0xb0/0xe4
 [<c031b509>] rest_init+0x5d/0x5f

This is not a new problem. It was pointed out some time ago already,
but now the WARN_ON() finally made it into mainline :)

The fix is not obvious, as this code seems to be called from various
call sites.

Thanks,
	tglx

^ permalink raw reply	[flat|nested] 19+ messages in thread

end of thread, other threads:[~2008-02-27  0:15 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2008-02-06 23:58 2.6.24-git: kmap_atomic() WARN_ON() Thomas Gleixner
2008-02-13 22:39 ` Rafael J. Wysocki
2008-02-14  1:13   ` Thomas Gleixner
2008-02-25 19:59 ` Björn Steinbrink
2008-02-25 20:08   ` Jeff Garzik
2008-02-25 20:35     ` Björn Steinbrink
2008-02-25 20:40     ` Andrew Morton
2008-02-25 22:01       ` Thomas Gleixner
2008-02-25 22:17         ` Andrew Morton
2008-02-25 23:19         ` Jeff Garzik
2008-02-26  8:39           ` Ingo Molnar
2008-02-26 16:32             ` Jeff Garzik
2008-02-26 18:19               ` Andrew Morton
2008-02-26 20:49                 ` Ingo Molnar
2008-02-26 21:37                   ` Andrew Morton
2008-02-26 22:59                     ` Jeff Garzik
2008-02-27  0:02                       ` Alan Cox
2008-02-26 23:49                   ` Nick Piggin
2008-02-26  8:50           ` Thomas Gleixner

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).