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Date: Thu, 14 Mar 2013 02:36:05 +0400 From: Sergey Yanovich <ynvich@...il.com> To: linux-kernel@...r.kernel.org Subject: gcc/binutils bug suspected -- recommended actions? 3.8.2 ARM kernel panics on boot. BUG() log: ------------[ cut here ]------------ Kernel BUG at c0226bf4 [verbose debug info unavailable] Internal error: Oops - BUG: 0 [#1] PREEMPT ARM Modules linked in: CPU: 0 Not tainted (3.8.2+ #2) PC is at pxa2xx_flash_probe+0x150/0x1a8 LR is at __arm_ioremap_pfn_caller+0x244/0x280 pc : [<c0226bf4>] lr : [<c000fed0>] psr: 40000013 sp : c782ddf0 ip : 00000000 fp : c782de14 r10: c04b4010 r9 : 00000000 r8 : 00000065 r7 : c04d4c28 r6 : c04d4fd0 r5 : c04d4f88 r4 : c79fec20 r3 : 00000000 r2 : 00000001 r1 : fffe8000 r0 : ce000000 Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel Control: 0000397f Table: a0004000 DAC: 00000017 Process swapper (pid: 1, stack limit = 0xc782c1c0) Stack: (0xc782ddf0 to 0xc782e000) dde0: c00d92a8 c00d906c c04d4c38 c04d4c6c de00: c04e24a4 c01fdd0c c782de24 c782de18 c01fed10 c0226ab0 c782de44 c782de28 de20: c01fdbc0 c01fed00 00000000 c04d4c38 c04d4c6c c04e24a4 c782de64 c782de48 de40: c01fdd7c c01fdb24 00000000 00000000 c782de68 c04e24a4 c782de8c c782de68 de60: c01fc218 c01fdd18 c78223cc c784fd50 c04e24a4 c7b05cc0 c04e13e8 00000000 de80: c782de9c c782de90 c01fd72c c01fc1c8 c782decc c782dea0 c01fd2f0 c01fd718 dea0: c0454004 c04c4bc4 c782decc c04e24a4 c04bdfa0 c04c4bc4 c04eb700 00000065 dec0: c782def4 c782ded0 c01fe0b4 c01fd228 00000006 c04bdfa0 c04c4bc4 c04eb700 dee0: 00000065 c04b4010 c782df04 c782def8 c01fef58 c01fe01c c782df14 c782df08 df00: c04b4024 c01fef18 c782df54 c782df18 c00085f4 c04b401c 00000006 00000006 df20: 00000065 c04a185c c782df54 00000006 c04bdfa0 c04c4bc4 c04eb700 00000065 df40: 00000000 c04bdfac c782df94 c782df58 c04a38e4 c0008564 00000006 00000006 df60: c04a31a8 2d861c1d e3030f2f 2c3f5f87 00000000 c0344258 00000000 00000000 df80: 00000000 00000000 c782dfac c782df98 c0344268 c04a37fc 00000000 00000000 dfa0: 00000000 c782dfb0 c00091b0 c0344264 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 cf930707 172e4f0d Backtrace: [<c0226aa4>] (pxa2xx_flash_probe+0x0/0x1a8) from [<c01fed10>] (platform_drv_probe+0x1c/0x20) r7:c01fdd0c r6:c04e24a4 r5:c04d4c6c r4:c04d4c38 [<c01fecf4>] (platform_drv_probe+0x0/0x20) from [<c01fdbc0>] (driver_probe_device+0xa8/0x1f4) [<c01fdb18>] (driver_probe_device+0x0/0x1f4) from [<c01fdd7c>] (__driver_attach+0x70/0x94) r6:c04e24a4 r5:c04d4c6c r4:c04d4c38 r3:00000000 [<c01fdd0c>] (__driver_attach+0x0/0x94) from [<c01fc218>] (bus_for_each_dev+0x5c/0x98) r6:c04e24a4 r5:c782de68 r4:00000000 r3:00000000 [<c01fc1bc>] (bus_for_each_dev+0x0/0x98) from [<c01fd72c>] (driver_attach+0x20/0x28) r7:00000000 r6:c04e13e8 r5:c7b05cc0 r4:c04e24a4 [<c01fd70c>] (driver_attach+0x0/0x28) from [<c01fd2f0>] (bus_add_driver+0xd4/0x22c) [<c01fd21c>] (bus_add_driver+0x0/0x22c) from [<c01fe0b4>] (driver_register+0xa4/0x134) r8:00000065 r7:c04eb700 r6:c04c4bc4 r5:c04bdfa0 r4:c04e24a4 [<c01fe010>] (driver_register+0x0/0x134) from [<c01fef58>] (platform_driver_register+0x4c/0x60) [<c01fef0c>] (platform_driver_register+0x0/0x60) from [<c04b4024>] (pxa2xx_flash_driver_init+0x14/0x1c) [<c04b4010>] (pxa2xx_flash_driver_init+0x0/0x1c) from [<c00085f4>] (do_one_initcall+0x9c/0x174) [<c0008558>] (do_one_initcall+0x0/0x174) from [<c04a38e4>] (kernel_init_freeable+0xf4/0x1b4) [<c04a37f0>] (kernel_init_freeable+0x0/0x1b4) from [<c0344268>] (kernel_init+0x10/0xec) [<c0344258>] (kernel_init+0x0/0xec) from [<c00091b0>] (ret_from_fork+0x14/0x24) r4:00000000 r3:00000000 Code: e3e0000b ea00000e e3e00004 ea00000c (e7f001f2) ---[ end trace d485c4bc3d1e9fb9 ]--- Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b The complier is debian gcc-4.7-arm-linux-gnueabi (4.7.2-5). objdump of the failing function contains a strange instruction at the failure address: ---------------- c0226b5c: eb0479d6 bl c03452bc <printk> c0226b60: e59f30d8 ldr r3, [pc, #216] ; c0226c40 <pxa2xx_flash_probe+0x19c> c0226b64: e5843020 str r3, [r4, #32] c0226b68: e594301c ldr r3, [r4, #28] c0226b6c: e3530004 cmp r3, #4 c0226b70: 8a00001f bhi c0226bf4 <pxa2xx_flash_probe+0x150> c0226b74: e3a02001 mov r2, #1 c0226b78: e1a02312 lsl r2, r2, r3 c0226b7c: e3120016 tst r2, #22 c0226b80: 1a00001c bne c0226bf8 <pxa2xx_flash_probe+0x154> c0226b84: ea00001a b c0226bf4 <pxa2xx_flash_probe+0x150> c0226b88: e5940010 ldr r0, [r4, #16] c0226b8c: ebf7a396 bl c000f9ec <__arm_iounmap> c0226b90: e5940014 ldr r0, [r4, #20] c0226b94: e3500000 cmp r0, #0 c0226b98: 0a000013 beq c0226bec <pxa2xx_flash_probe+0x148> c0226b9c: ebf7a392 bl c000f9ec <__arm_iounmap> c0226ba0: ea000011 b c0226bec <pxa2xx_flash_probe+0x148> c0226ba4: e3a06000 mov r6, #0 c0226ba8: e58060e0 str r6, [r0, #224] ; 0xe0 c0226bac: e5953020 ldr r3, [r5, #32] c0226bb0: e59f108c ldr r1, [pc, #140] ; c0226c44 <pxa2xx_flash_probe+0x1a0> c0226bb4: e1a02006 mov r2, r6 c0226bb8: e58d3000 str r3, [sp] c0226bbc: e595301c ldr r3, [r5, #28] c0226bc0: e5940000 ldr r0, [r4] c0226bc4: ebffc792 bl c0218a14 <mtd_device_parse_register> c0226bc8: e2870010 add r0, r7, #16 c0226bcc: e1a01004 mov r1, r4 c0226bd0: ebff5a75 bl c01fd5ac <dev_set_drvdata> c0226bd4: e1a00006 mov r0, r6 c0226bd8: ea000012 b c0226c28 <pxa2xx_flash_probe+0x184> c0226bdc: e3e00012 mvn r0, #18 c0226be0: ea000010 b c0226c28 <pxa2xx_flash_probe+0x184> c0226be4: e3e0000b mvn r0, #11 c0226be8: ea00000e b c0226c28 <pxa2xx_flash_probe+0x184> c0226bec: e3e00004 mvn r0, #4 c0226bf0: ea00000c b c0226c28 <pxa2xx_flash_probe+0x184> c0226bf4: e7f001f2 .word 0xe7f001f2 --------------------- Where should I look? 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