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4c04f25dd4
Fix following NULL pointer dereference in mt7615_register_ext_phy routine [ 27.648860] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000060 [ 27.657697] Mem abort info: [ 27.660495] ESR = 0x96000046 [ 27.663549] EC = 0x25: DABT (current EL), IL = 32 bits [ 27.668857] SET = 0, FnV = 0 [ 27.671910] EA = 0, S1PTW = 0 [ 27.675040] Data abort info: [ 27.677918] ISV = 0, ISS = 0x00000046 [ 27.681751] CM = 0, WnR = 1 [ 27.684717] user pgtable: 4k pages, 39-bit VAs, pgdp=000000007d8cc000 [ 27.691156] [0000000000000060] pgd=000000007d281003, pud=000000007d281003, pmd=0000000000000000 [ 27.699857] Internal error: Oops: 96000046 [#1] SMP [ 27.774939] CPU: 1 PID: 701 Comm: ash Not tainted 5.4.41 #0 [ 27.780500] Hardware name: Bananapi BPI-R64 (DT) [ 27.785108] pstate: 60000005 (nZCv daif -PAN -UAO) [ 27.789897] pc : mt7615_register_ext_phy+0x60/0x2c8 [mt7615_common] [ 27.796156] lr : mt7615_init_debugfs+0x99c/0x18e0 [mt7615_common] [ 27.802237] sp : ffffffc0115dbcb0 [ 27.805541] x29: ffffffc0115dbcb0 x28: ffffff803e309600 [ 27.810843] x27: 0000000000000000 x26: 0000000000000000 [ 27.816144] x25: ffffff803d936928 x24: ffffff803d936950 [ 27.821447] x23: 0000000000000000 x22: 0000000fffffffe0 [ 27.826749] x21: 0000000000000002 x20: ffffff8001e82620 [ 27.832050] x19: 0000000000000000 x18: 0000000000000000 [ 27.837352] x17: 0000000000000000 x16: 0000000000000000 [ 27.842653] x15: 0000000000000000 x14: 0000000000000000 [ 27.847955] x13: 0000000000000000 x12: 0000000000000000 [ 27.853256] x11: 0000000000000000 x10: 0000000000000040 [ 27.858558] x9 : ffffffc0112b3eb0 x8 : ffffffc0112b3ea8 [ 27.863859] x7 : ffffff803e400048 x6 : 0000000000000000 [ 27.869161] x5 : ffffff803e400000 x4 : 0000000000000000 [ 27.874462] x3 : 0000000000000001 x2 : 0000000000007615 [ 27.879764] x1 : 0000000000000068 x0 : ffffffc0088ccc58 [ 27.885066] Call trace: [ 27.887505] mt7615_register_ext_phy+0x60/0x2c8 [mt7615_common] [ 27.893416] mt7615_init_debugfs+0x99c/0x18e0 [mt7615_common] [ 27.899156] simple_attr_write+0xf0/0x178 [ 27.903158] debugfs_attr_write+0x4c/0x70 [ 27.907159] full_proxy_write+0x60/0x90 [ 27.910987] __vfs_write+0x18/0x40 [ 27.914379] vfs_write+0xb0/0x1b8 [ 27.917685] ksys_write+0x4c/0xc8 [ 27.920989] __arm64_sys_write+0x18/0x20 Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.