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SubjectRe: WARNING (1) at .../arch/i386/mm/highmem.c:49 [Was: 2.6.20-rc1-mm1]
On Sat, 16 Dec 2006 00:25:43 +0059
Jiri Slaby <jirislaby@gmail.com> wrote:

> Andrew Morton wrote:
> > Temporarily at
> >
> > http://userweb.kernel.org/~akpm/2.6.20-rc1-mm1/
> >
> > Will appear later at
> >
> > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.20-rc1/2.6.20-rc1-mm1/
>
> Ok, after fixing sata_promise, I got this 7 times:
> [ 30.957539] WARNING (1) at /home/l/latest/xxx/arch/i386/mm/highmem.c:49
> kmap_atomic()
> [ 30.957642] [<c0103f1b>] show_trace_log_lvl+0x1a/0x30
> [ 30.957748] [<c01045d5>] show_trace+0x12/0x14
> [ 30.957846] [<c010465c>] dump_stack+0x16/0x18
> [ 30.957944] [<c011a20b>] kmap_atomic+0x1f8/0x20d
> [ 30.958041] [<c01b1921>] ntfs_end_buffer_async_read+0x191/0x2ed
> [ 30.958142] [<c0182f3a>] end_bio_bh_io_sync+0x26/0x3f
> [ 30.958241] [<c01849d4>] bio_endio+0x37/0x62
> [ 30.958338] [<c01cc500>] __end_that_request_first+0x224/0x445
> [ 30.958441] [<c01cc729>] end_that_request_chunk+0x8/0xa
> [ 30.958541] [<c025fe3a>] scsi_end_request+0x1f/0xc6
> [ 30.958640] [<c02600c8>] scsi_io_completion+0x1a1/0x336
> [ 30.958738] [<c026578d>] sd_rw_intr+0x23/0x1ab
> [ 30.958835] [<c025c38d>] scsi_finish_command+0x42/0x47
> [ 30.958935] [<c02607f8>] scsi_softirq_done+0x64/0xca
> [ 30.959032] [<c01ce2c9>] blk_done_softirq+0x54/0x62
> [ 30.959132] [<c0126a25>] __do_softirq+0x75/0xde
> [ 30.959229] [<c0126ac9>] do_softirq+0x3b/0x3d
> [ 30.959326] [<c0126d5e>] irq_exit+0x3b/0x3e
> [ 30.959423] [<c0105746>] do_IRQ+0x45/0x7f
> [ 30.959540] [<c010397f>] common_interrupt+0x23/0x28
> [ 30.959713] [<c010138b>] cpu_idle+0x7c/0xba
> [ 30.959809] [<c01006dc>] rest_init+0x23/0x37
> [ 30.959951] [<c050a7df>] start_kernel+0x337/0x3e8

bah, that's a false positive. I'll teach kmap_atomic-debugging.patch about
KM_BIO_SRC_IRQ and KM_BIO_DST_IRQ, thanks.

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