it seems that something failed while a module (lpg610) was initializing, and cleanup was called. At some point during cleanup, an access to invalid memory was attempted, cusing the oops. what is lpg610, i searched using lxr got no results. Is this a standard module?
On Tue, Dec 1, 2009 at 09:57, Lev Olshvang <lols...@012.net.il> wrote: > Hi list, > > I am trying to figure out Oops reason, but I do not understand where it > happens > > > The system is ARM, linux kernel 2.6.31, No loadable modules > > I have 3 questions to following dump : > > 1. - PID 1 must be an init process, why it calls himself a swapper ? > (Perhaps it is a kernel thread kswapd) > > 2. - who is trying to load the failed module - kernel or userspace ( > I see that module failed initialization and oopsed in cleanup) > The console shows that kernel made most initializations before oops > 3. - why no printk from this module is not shown ( I added dozen printks to > module init) > > > > Here is console messages > CPU: Testing write buffer coherency: ok > > Serial: AMBA PL011 UART driver > dev:f1: ttyAMA0 at MMIO 0xc6000000 (irq = 0) is a AMBA/PL011 > console [ttyAMA0] enabled > bio: create slab <bio-0> at 0 > MMC card not detected > NET: Registered protocol family 2 > IP route cache hash table entries: 1024 (order: 0, 4096 bytes) > TCP established hash table entries: 1024 (order: 1, 8192 bytes) > TCP bind hash table entries: 1024 (order: 3, 40960 bytes) > TCP: Hash tables configured (established 1024 bind 1024) > TCP reno registered > NET: Registered protocol family 1 > Unable to handle kernel paging request at virtual address 36677670 > pgd = c0004000 > [36677670] *pgd=00000000 > Internal error: Oops: 0 [#1] > CPU: 0 Not tainted (2.6.31 #8) > PC is at 0x36677670 > LR is at device_get_nodename+0x70/0xdc > pc : [<36677670>] lr : [<c01540e4>] psr: 20000013 > sp : c1c33e30 ip : c1c33e50 fp : c1c33e4c > r10: c022d744 r9 : 00000001 r8 : 00000000 > r7 : c03c5554 r6 : c1ca5880 r5 : c1c33e54 r4 : c1ca5880 > r3 : 36677670 r2 : 00000004 r1 : c1c33e54 r0 : c1ca5880 > Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel > Control: 0005317f Table: 31004000 DAC: 00000017 > Process swapper (pid: 1, stack limit = 0xc1c32270) > Stack: (0xc1c33e30 to 0xc1c34000) > 3e20: c1ca5880 c1c47000 c1c19bc0 > c03c5554 > ..... > 3fa0: c001f2e8 c0028a9c 00000040 c03bca48 00000000 00000000 c001befc > c001c088 > 3fc0: 00000000 00000000 00000000 00000000 c1c33ff4 c1c33fe0 c0008448 > c001f2c0 > 3fe0: 00000000 00000000 00000000 c1c33ff8 c0034df4 c00083c0 b3cc73ac > 318cb34c > Backtrace: > [<c0154074>] (device_get_nodename+0x0/0xdc) from [<c0154260>] > (dev_uevent+0x110/0x144) > r7:c03c5554 r6:c1c19bc0 r5:c1c47000 r4:c1ca5880 > [<c0154150>] (dev_uevent+0x0/0x144) from [<c01166fc>] > (kobject_uevent_env+0x1e4/0x478) > r5:c1c47000 r4:c1ca5888 > [<c0116518>] (kobject_uevent_env+0x0/0x478) from [<c01169a4>] > (kobject_uevent+0x14/0x18) > [<c0116990>] (kobject_uevent+0x0/0x18) from [<c01548b8>] > (device_del+0x138/0x17c) > [<c0154780>] (device_del+0x0/0x17c) from [<c0154910>] > (device_unregister+0x14/0x20) > r7:00000000 r6:0fe00000 r5:c0257698 r4:c1ca5880 > [<c01548fc>] (device_unregister+0x0/0x20) from [<c0154954>] > (device_destroy+0x38/0x44) > r5:c0257698 r4:c1ca5880 > [<c015491c>] (device_destroy+0x0/0x44) from [<c0028a28>] > (lpg610_cleanup_module+0xd8/0x13c) > r4:c03cc490 > [<c0028950>] (lpg610_cleanup_module+0x0/0x13c) from [<c0028bf0>] > (lpg610_init_module+0x164/0x330) > [<c0028a8c>] (lpg610_init_module+0x0/0x330) from [<c001f2e8>] > (do_one_initcall+0x38/0x1c4) > > > Thnaks for reading, > Lev > > _______________________________________________ > Linux-il mailing list > Linux-il@cs.huji.ac.il > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il > -- Ogden Nash - "The trouble with a kitten is that when it grows up, it's always a cat." - http://www.brainyquote.com/quotes/authors/o/ogden_nash.html _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
