Messages in this thread | | | Date | Tue, 10 Mar 2015 21:31:01 +0300 | From | Stas Sergeev <> | Subject | Re: [PATCH] n_tty: use kmalloc() instead of vmalloc() to avoid crash on armada-xp |
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10.03.2015 20:38, Russell King - ARM Linux пишет: > On Tue, Mar 10, 2015 at 08:27:34PM +0300, Stas Sergeev wrote: >> Please also find the same crash here: >> http://lists.linaro.org/pipermail/kernel-build-reports/2014-June/003872.html > Hmm, looks like from the exynos5420-arndale-octa failure in that, we > don't dump the page table entries. We should do. Sorry about my > previous mail. > > If you can reproduce this, please do so with this patch so that we > can get the page table entries associated with the problem. Thanks. > > arch/arm/mm/fault.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c > index a982dc3190df..6333d9c17875 100644 > --- a/arch/arm/mm/fault.c > +++ b/arch/arm/mm/fault.c > @@ -552,6 +552,7 @@ do_DataAbort(unsigned long addr, unsigned int fsr, struct pt_regs *regs) > > pr_alert("Unhandled fault: %s (0x%03x) at 0x%08lx\n", > inf->name, fsr, addr); > + show_pte(current->mm, addr); > > info.si_signo = inf->sig; > info.si_errno = 0; > > [ 5.383283] Unhandled fault: external abort on non-linefetch (0x808) at 0xf00d3018 [ 5.390871] pgd = c0004000 [ 5.393583] [f00d3018] *pgd=2d404811, *pte=efc1e65f, *ppte=efc1e45f [ 5.399901] Internal error: : 808 [#1] SMP ARM [ 5.404354] Modules linked in: [ 5.407427] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.0.0-rc2-00137-gb672c98-dirty #59 [ 5.415536] Hardware name: Marvell Armada 370/XP (Device Tree) [ 5.421383] task: ed41e800 ti: ed43e000 task.ti: ed43e000 [ 5.426798] PC is at _set_bit+0x28/0x50 [ 5.430643] LR is at n_tty_set_termios+0x328/0x358 [ 5.435446] pc : [<c01bc8f8>] lr : [<c0207374>] psr: 40000113 [ 5.435446] sp : ed43fd00 ip : 00000000 fp : 00000000 [ 5.446950] r10: 00000002 r9 : 00000000 r8 : ec975c00 [ 5.452186] r7 : 00000000 r6 : f00d3018 r5 : f00d3000 r4 : ecd86200 [ 5.458728] r3 : 00002000 r2 : 00002000 r1 : f00d3018 r0 : 00000000 [ 5.465271] Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 5.472597] Control: 10c5387d Table: 0000406a DAC: 00000015 [ 5.478355] Process swapper/0 (pid: 1, stack limit = 0xed43e220) [ 5.484376] Stack: (0xed43fd00 to 0xed440000) [ 5.488745] fd00: f00d3000 00000000 ecd86200 f00d5240 ec975c00 c0207448 c02073a4 ecd86200 [ 5.496943] fd20: ecd8635c ec990dc0 00000000 c020b37c ecd86200 ec990dc0 ecd86200 c020bb40 [ 5.505142] fd40: ed6dd400 ecd86200 00000000 ec975c00 00000000 c0205a28 ed022000 00000002 [ 5.513341] fd60: 00000449 ecc89100 00000001 00500001 ed024590 c0205ff8 c00b81e4 ec975c00 [ 5.521540] fd80: ed409c00 00000000 c06f0678 c04ee370 ed024590 ecc89100 c06f37cc 00000000 [ 5.529739] fda0: ed022000 c06f37cc 00000000 c00b89dc ed43fe7c 00000000 ed43fe38 ecc89100 [ 5.537938] fdc0: ed024590 ecc89108 c00b891c ed43fe7c 00000000 c00b2f40 00000000 ed43fec0 [ 5.546137] fde0: ed43ff44 00000002 00000000 ed43fe7c 00000000 c00c0d88 ed679019 00766564 [ 5.554336] fe00: 00000003 c00bea44 00000000 ecc89100 00000026 00000000 00000000 00000002 [ 5.562535] fe20: 00000000 c004fa98 00000000 ed403f50 00000000 00000000 ed024590 ed0246d0 [ 5.570734] fe40: 00000041 ecc89100 ed43fec0 ed43ff44 ed43fe7c 00000000 00000041 00000000 [ 5.578932] fe60: 00000000 c00c1850 ed43fe8c 00000000 00000000 00000000 817b7a1a ed403f50 [ 5.587131] fe80: ed022110 0000001a 00000013 00000000 00000007 ed43ff44 00000001 ed679000 [ 5.595330] fea0: ffffff9c c0655588 c068f470 000000ab 00000000 c00c2780 00000041 00000000 [ 5.603529] fec0: ed403f50 ed022110 0f4756ea 00000007 ed679019 00000000 00000000 ed0027f8 [ 5.611727] fee0: ed024590 00000101 00000004 0000001e 00000000 00000000 00000000 00000002 [ 5.619925] ff00: ed679000 00000fec 00000fec 00000001 00000002 00000002 ed679000 ffffff9c [ 5.628124] ff20: c06d0740 00000000 ed679000 ffffff9c c06d0740 c00b4050 00000000 00000000 [ 5.636322] ff40: c05a7630 00000002 00000000 00000026 00000100 00000001 000000ab c06868a4 [ 5.644521] ff60: 00000007 c0686884 c06d0740 c0655588 000000ab c0655d68 00000007 00000007 [ 5.652720] ff80: c0655588 beefdead 00000000 c04c6850 00000000 00000000 00000000 00000000 [ 5.660918] ffa0: 00000000 c04c6858 00000000 c000e540 00000000 00000000 00000000 00000000 [ 5.669117] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 5.677315] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 beefdead beefdead [ 5.685519] [<c01bc8f8>] (_set_bit) from [<c0207374>] (n_tty_set_termios+0x328/0x358) [ 5.693371] [<c0207374>] (n_tty_set_termios) from [<c0207448>] (n_tty_open+0xa4/0xcc) [ 5.701223] [<c0207448>] (n_tty_open) from [<c020b37c>] (tty_ldisc_open+0x40/0x78) [ 5.708812] [<c020b37c>] (tty_ldisc_open) from [<c020bb40>] (tty_ldisc_setup+0x18/0x58) [ 5.716838] [<c020bb40>] (tty_ldisc_setup) from [<c0205a28>] (tty_init_dev+0x8c/0x17c) [ 5.724775] [<c0205a28>] (tty_init_dev) from [<c0205ff8>] (tty_open+0x4e0/0x5f4) [ 5.732191] [<c0205ff8>] (tty_open) from [<c00b89dc>] (chrdev_open+0xc0/0x17c) [ 5.739436] [<c00b89dc>] (chrdev_open) from [<c00b2f40>] (do_dentry_open.isra.12+0xec/0x30c) [ 5.747899] [<c00b2f40>] (do_dentry_open.isra.12) from [<c00c0d88>] (do_last.isra.37+0x128/0xb70) [ 5.756796] [<c00c0d88>] (do_last.isra.37) from [<c00c1850>] (path_openat+0x80/0x578) [ 5.764647] [<c00c1850>] (path_openat) from [<c00c2780>] (do_filp_open+0x2c/0x80) [ 5.772152] [<c00c2780>] (do_filp_open) from [<c00b4050>] (do_sys_open+0x124/0x1d0) [ 5.779833] [<c00b4050>] (do_sys_open) from [<c0655d68>] (kernel_init_freeable+0x134/0x1d4) [ 5.788209] [<c0655d68>] (kernel_init_freeable) from [<c04c6858>] (kernel_init+0x8/0xe4) [ 5.796325] [<c04c6858>] (kernel_init) from [<c000e540>] (ret_from_fork+0x14/0x34) [ 5.803915] Code: f591f000 e1a03312 e1912f9f e1822003 (e1810f92) [ 5.810023] ---[ end trace c74d97aefdd5e727 ]--- [ 5.814696] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
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