3a5aec246f
Adding clocks from a kernel module can cause a NULL pointer dereference if the parent of a clock is added after the clock is added. This happens because __clk_init() iterates over the list of orphans and reparents the orphans to the clock being registered before creating the debugfs entry for the clock. Create the debugfs entry first before reparenting the orphans. Unable to handle kernel NULL pointer dereference at virtual address 00000028 pgd = ef3e4000 [00000028] *pgd=bf810831 Internal error: Oops: 17 [#1] PREEMPT SMP ARM Modules linked in: mmcc_8960(+) CPU: 0 PID: 52 Comm: modprobe Not tainted 3.12.0-rc2-00023-g1021a28-dirty #659 task: ef319200 ti: ef3a6000 task.ti: ef3a6000 PC is at lock_rename+0x24/0xc4 LR is at debugfs_rename+0x34/0x208 pc : [<c0317238>] lr : [<c047dfe4>] psr: 00000013 sp : ef3a7b88 ip : ef3a7ba8 fp : ef3a7ba4 r10: ef3d51cc r9 : ef3bc680 r8 : ef3d5210 r7 : ef3bc640 r6 : |
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| .. | ||
| hisilicon | ||
| keystone | ||
| mmp | ||
| mvebu | ||
| mxs | ||
| rockchip | ||
| samsung | ||
| shmobile | ||
| socfpga | ||
| spear | ||
| sunxi | ||
| tegra | ||
| ux500 | ||
| versatile | ||
| x86 | ||
| zynq | ||
| Kconfig | ||
| Makefile | ||
| clk-axi-clkgen.c | ||
| clk-bcm2835.c | ||
| clk-composite.c | ||
| clk-devres.c | ||
| clk-divider.c | ||
| clk-efm32gg.c | ||
| clk-fixed-factor.c | ||
| clk-fixed-rate.c | ||
| clk-gate.c | ||
| clk-highbank.c | ||
| clk-ls1x.c | ||
| clk-max77686.c | ||
| clk-mux.c | ||
| clk-nomadik.c | ||
| clk-nspire.c | ||
| clk-ppc-corenet.c | ||
| clk-prima2.c | ||
| clk-s2mps11.c | ||
| clk-si5351.c | ||
| clk-si5351.h | ||
| clk-twl6040.c | ||
| clk-u300.c | ||
| clk-vt8500.c | ||
| clk-wm831x.c | ||
| clk-xgene.c | ||
| clk.c | ||
| clkdev.c | ||