On Sun, Feb 8, 2015 at 3:37 PM, Matwey V. Kornilov <matwey@xxxxxxxxxx> wrote: > spear13xx_pcie_driver.driver is allocated in text.init section > and then the pointer to it is passed futher. This patch is to avoid > crashes like the following, when freed memory is used: > > #0 __device_attach (drv=0xc0ed5608 <spear13xx_pcie_driver+20>, data=0xdb622610) at ../drivers/base/dd.c:409 > #1 0xc07a4798 in bus_for_each_drv (bus=<optimized out>, start=<optimized out>, data=0xda0, fn=0xc07a6740 <__device_attach>) > at ../drivers/base/bus.c:463 > #2 0xc07a6324 in device_attach (dev=0xdb622610) at ../drivers/base/dd.c:447 > #3 0xc07a5814 in bus_probe_device (dev=0xdb622610) at ../drivers/base/bus.c:558 > #4 0xc07a38d8 in device_add (dev=<optimized out>) at ../drivers/base/core.c:1058 > #5 0xc08b6a5c in of_device_add (ofdev=<optimized out>) at ../drivers/of/device.c:66 > #6 0xc08b742c in of_platform_device_create_pdata (np=<optimized out>, bus_id=0x0 <__vectors_start>, platform_data=0x0 <__vectors_start>, > parent=<optimized out>) at ../drivers/of/platform.c:241 > #7 0xc08b7568 in of_platform_bus_create (bus=0xdfa46780, matches=0x0 <__vectors_start>, lookup=0x0 <__vectors_start>, parent=0xdb183410, > strict=true) at ../drivers/of/platform.c:414 > #8 0xc08b79bc in of_platform_populate (root=0xc0ed5608 <spear13xx_pcie_driver+20>, matches=0xdb622610, lookup=0xda0, > parent=0xc07a6740 <__device_attach>) at ../drivers/of/platform.c:501 > #9 0xbf000030 in am335x_child_probe (pdev=0xdb183400) at ../drivers/usb/musb/musb_am335x.c:12 > #10 0xc07a83f0 in platform_drv_probe (_dev=0xdb183410) at ../drivers/base/platform.c:512 > #11 0xc07a64e8 in really_probe (drv=<optimized out>, dev=<optimized out>) at ../drivers/base/dd.c:302 > #12 driver_probe_device (drv=0xbf000234, dev=0xdb183410) at ../drivers/base/dd.c:399 > #13 0xc07a6820 in __driver_attach (dev=0xdb183410, data=0xbf000234) at ../drivers/base/dd.c:477 > #14 0xc07a46e8 in bus_for_each_dev (bus=<optimized out>, start=<optimized out>, data=0xda0, fn=0xc07a83a4 <platform_drv_probe>) > at ../drivers/base/bus.c:313 > #15 0xc07a5ebc in driver_attach (drv=<optimized out>) at ../drivers/base/dd.c:496 > #16 0xc07a5af0 in bus_add_driver (drv=0xbf000234) at ../drivers/base/bus.c:694 > #17 0xc07a6fec in driver_register (drv=0xbf000234) at ../drivers/base/driver.c:167 > #18 0xc0209c34 in do_one_initcall (fn=0xbf002000) at ../init/main.c:801 > #19 0xc02e0494 in do_init_module (mod=<optimized out>) at ../kernel/module.c:3142 > #20 load_module (info=0xdb6b1f54, uargs=<optimized out>, flags=<optimized out>) at ../kernel/module.c:3461 > #21 0xc02e0a44 in SYSC_finit_module (flags=<optimized out>, uargs=<optimized out>, fd=<optimized out>) at ../kernel/module.c:3537 > #22 SyS_finit_module (fd=7, uargs=-1225602132, flags=0) at ../kernel/module.c:3518 > #23 0xc021a680 in ?? () > > Fixes: 6675ef212da (PCI: spear: Fix Section mismatch compilation warning for probe()) wouldn't this again result in the problem reported above ? -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
