[uClinux-dev] BUG: scheduling while atomic

[Arnon Meydav]

Hi,
I am running snapgear-3.4.0 with a preemptive 2.6 kernel, on a
montejade-like board (IXP425 CPU).
I get the following error message when I run some apps that access the
ethernet device, e.g. ifconfig:
 
BUG: scheduling while atomic: ifconfig/0x00000001/802
[<c0022dc8>] (dump_stack+0x0/0x14) from [<c01dd1c0>]
(schedule+0x60/0x6b8)
[<c01dd160>] (schedule+0x0/0x6b8) from [<c01de5fc>]
(schedule_timeout+0x8c/0xbc)
[<c01de570>] (schedule_timeout+0x0/0xbc) from [<bf01c820>]
(ixOsalMutexLock+0x190/0x1b4 [ixp400])
 r8 = C0E07E0C  r7 = C021D740  r6 = FFFFA7C2  r5 = C0E06000
 r4 = BF0344B8
[<bf01c690>] (ixOsalMutexLock+0x0/0x1b4 [ixp400]) from [<bf00e140>]
(ixEthAccMibIIStatsGetClear+0x1)
 r7 = 00E07E0C  r6 = 05200000  r5 = BF0344C0  r4 = 00000000
[<bf00e018>] (ixEthAccMibIIStatsGetClear+0x0/0x164 [ixp400]) from
[<bf09da28>] (0xbf09da28)
[<bf09d9d0>] (0xbf09d9d0) from [<c0170e18>] (dev_seq_show+0x4c/0x134)
 r6 = C1BAFB60  r5 = C1BAFB60  r4 = C08E4000
[<c0170dcc>] (dev_seq_show+0x0/0x134) from [<c0098328>]
(seq_read+0x26c/0x3a4)
 r5 = 0000007B  r4 = C08E4000
[<c00980bc>] (seq_read+0x0/0x3a4) from [<c0074244>]
(vfs_read+0xc4/0x17c)
[<c0074180>] (vfs_read+0x0/0x17c) from [<c00745d8>] (sys_read+0x4c/0x74)
 r8 = 00000100  r7 = 00000000  r6 = C0E07F78  r5 = C02EF580
 r4 = C02EF5A0
[<c007458c>] (sys_read+0x0/0x74) from [<c001dde0>]
(ret_fast_syscall+0x0/0x2c)
 r8 = C001DF84  r7 = 00000003  r6 = BE9CFB28  r5 = 00000000
 r4 = 0001A008
 
Is this a know issue? Is it OK or a real bug that needs sorting out?
(I don't have any experience with the preemptive patch - we've been
using kernel 2.4 till now)
 
 
Thanks, 
 - Arnon


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