From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adrian McMenamin Date: Sat, 07 Feb 2009 00:41:20 +0000 Subject: oops I get on booting Message-Id: <1233967281.6893.3.camel@localhost.localdomain> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org I am getting this error every so often on boot -as it is not every time it seems to be a race condition of some sort. With the latest git the frequency of the problem seems to have increased, but it has been there for a while. Anybody have any suggestions as to what it might be? Naturally I'd suspect my own code, though nothing I've written is in the stack: [ 42.893155] Unable to handle kernel NULL pointer dereference at virtual address 0000000c [ 42.909100] pc = 8c0874ea [ 42.911093] *pde = 00000000 [ 42.914126] Oops: 0000 [#1] [ 42.916782] Modules linked in: evdev [ 42.920373] [ 42.921995] Pid : 781, Comm: rc [ 42.925416] CPU : 0 Not tainted (2.6.29-rc3-00700-g67baead-dirty #456) [ 42.925446] [ 42.934591] PC is at pipe_read+0xca/0x3e0 [ 42.938717] PR is at pipe_read+0x54/0x3e0 [ 42.942839] PC : 8c0874ea SP : 8c897e60 SR : 40008000 TEA : c00155c8 [ 42.949666] R0 : 55555555 R1 : 00000000 R2 : 00000000 R3 : 8c84822c [ 42.956493] R4 : 8c848200 R5 : 8c84822c R6 : 00000001 R7 : 55555555 [ 42.963321] R8 : 8c7cc000 R9 : 8c897ebc R10 : 8c897efc R11 : fffffdee [ 42.970144] R12 : 8c84822c R13 : 8c07e160 R14 : 8c848200 [ 42.975536] MACH: 00000000 MACL: fffffff8 GBR : 296e4440 PR : 8c087474 [ 42.982351] [ 42.982365] Call trace: [ 42.986524] [<8c07e4bc>] do_sync_read+0x9c/0x100 [ 42.991187] [<8c07e160>] wait_on_retry_sync_kiocb+0x0/0xc0 [ 42.996950] [<8c031c20>] autoremove_wake_function+0x0/0x40 [ 43.002509] [<8c247768>] preempt_schedule+0x28/0x60 [ 43.007534] [<8c2470e0>] __sched_text_start+0x0/0x560 [ 43.012743] [<8c07ed7e>] vfs_read+0x7e/0x160 [ 43.017233] [<8c07f2fa>] sys_read+0x3a/0x80 [ 43.021546] [<8c008236>] syscall_call+0xc/0x10 [ 43.026035] [<8c07f2c0>] sys_read+0x0/0x80 [ 43.030327] [ 43.031763] Process: rc (pid: 781, stack limit = 8c896001) [ 43.037511] Stack: (0x8c897e60 to 0x8c898000) [ 43.041995] 7e60: 8c84822c 8c7cc06c 8c897f40 55555555 8c54ee80 00000000 00000000 00000080 [ 43.050438] 7e80: 55555555 00000000 00000008 8c3b33a0 8c07e4bc 8c897f40 8c07e160 8c54ee80 [ 43.059061] 7ea0: fffffdee 8c897efc 8c897ebc 00000000 00000000 00000000 8c897f7c 8c898004 [ 43.067504] 7ec0: 8c9d7be0 00000000 00000001 ffffffff 8c54ee80 00000000 00000000 00000000 [ 43.076127] 7ee0: 00000000 8cc1b0c0 00000000 00000000 8c9d7ba0 8cc1b0c0 8c031c20 8c897efc [ 43.084571] 7f00: 8c897efc 00000000 00000000 8cc1b290 8cc1b28c 8cc1b214 8cc1b13c 00000080 [ 43.093193] 7f20: 8c247768 8c897f40 0000064c 00000000 00000000 00000000 8c2470e0 10000000 [ 43.101637] 7f40: 7b839c94 00000080 8c07ed7e 7b839c64 0000064c fffffff7 8c897f7c 7b839c94 [ 43.110259] 7f60: 00000080 8c54ee80 8c07f2fa 00000080 7b839c94 8c54ee80 8c897f48 00000000 [ 43.118703] 7f80: 00000000 00000000 8c008236 00000000 00000000 00000071 0000007f 8c07f2c0 [ 43.127325] 7fa0: 00000000 00000440 7b839d1c 00000003 00000003 7b839c94 00000080 00000118 [ 43.135769] 7fc0: 00000000 00000080 7b839c94 00000003 00000000 0000064c 7b839c64 7b839c64 [ 43.144391] 7fe0: 29675174 00457bf2 00008001 296e4440 00000000 000003c0 0000004c 00000160 [ 43.161164] ---[ end trace d39f684adbf6ae60 ]---