On Saturday 18 March 2006 01:55, Rob Landley wrote: > On Friday 17 March 2006 7:24 pm, Blaisorblade wrote: > > On Saturday 18 March 2006 01:12, Rob Landley wrote: > > > I can reproduce the following in 2.6.16-rc5, User Mode Linux: > > > > > > kernel BUG at drivers/block/loop.c:621! > > > Kernel panic - not syncing: BUG! > > > > > > EIP: 0073:[<ffffe410>] CPU: 0 Not tainted ESP: 007b:b7de1f9c EFLAGS: > > > 00200246 Not tainted > > > EAX: 00000000 EBX: 000018be ECX: 00000013 EDX: 000018be > > > ESI: 000018bb EDI: 00000011 EBP: b7de1fb8 DS: 007b ES: 007b > > > 09b87bb4: [<0806c762>] show_regs+0x102/0x110 > > > 09b87bd0: [<0805b6fc>] panic_exit+0x2c/0x50 > > > 09b87be0: [<0807ff7d>] notifier_call_chain+0x2d/0x50 > > > 09b87c00: [<08071095>] panic+0x75/0x120 > > > 09b87c20: [<0812e181>] loop_thread+0x151/0x160 > > > 09b87c4c: [<08065297>] run_kernel_thread+0x37/0x60 > > > 09b87cfc: [<0805bbd1>] new_thread_handler+0x9 1/0xc0 > > > > The below is strange - GCC is putting disks in the .text section or > > kallsyms has some bug. > > > > > 09b87d20: [<ffffe420>] disks+0xf7e7ec84/0x4 > > Isn't ffffe??? the FASTCALL page?
Sorry, didn't mention that according to ctags, disks is defined only as a struct member or as a static variable... clearly neither is valid on a call stack. The call trace decoder filters out hex values outside _stext - _etext, but maybe it also considers valid the FASTCALL page... leading to this interesting bogus output :-) > Haven't tried. I value my laptop. :) > My host is running unbuntu 2.6.12, and my mount test requires a clean > environment with nothing else mounted when it first runs. (It basically > needs to run as PID 1. Among other things, it synthesizes variants of its > own fstab...) > I don't think it's a uml bug, but I cc'd the UML list because that's where > I can easily reproduce it. Ok - didn't notice the LKML cc, sorry (it's really late). > Rob -- Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894) http://www.user-mode-linux.org/~blaisorblade ___________________________________ Yahoo! Messenger with Voice: chiama da PC a telefono a tariffe esclusive http://it.messenger.yahoo.com ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
