[kbuild-all] Re: drivers/mtd/tests/subpagetest.c:426:1: error: could not split insn

Hi, On Tue, Dec 15, 2020 at 11:05:28PM +0800, kernel test robot wrote: > Hi Willy, > > FYI, the error/warning still remains. > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 148842c98a24e508aecb929718818fbf4c2a6ff3 > commit: 3744741adab6d9195551ce30e65e726c7a408421 random32: add noise from network and scheduling activity (...) not sure why I'm assigned this, but the root cause is a compiler bug: > drivers/mtd/tests/subpagetest.c: In function 'mtd_subpagetest_init': >>> drivers/mtd/tests/subpagetest.c:426:1: error: could not split insn > 426 | } > | ^ > (insn:TI 453 2652 455 (set (reg/v:SI 3 a3 [orig:304 a ] [304]) > (xor:SI (reg:SI 1 a1 [orig:717 net_rand_noise ] [717]) > (const:SI (plus:SI (symbol_ref:SI ("*.LANCHOR0") [flags 0x182]) > (const_int 12 [0xc]))))) "include/linux/prandom.h":66:4 152 {cskyv2_xorsi3} > (expr_list:REG_DEAD (reg:SI 1 a1 [orig:717 net_rand_noise ] [717]) > (nil))) > during RTL pass: final > drivers/mtd/tests/subpagetest.c:426:1: internal compiler error: in final_scan_insn_1, at final.c:3074 ^^^^^^^^^^^^^^^^^^^^^^^ > 0x510da0 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) > /tmp/build-crosstools-xh-9.3.0-2.34/gcc/gcc-9.3.0/gcc/rtl-error.c:108 > 0x503d22 final_scan_insn_1 > /tmp/build-crosstools-xh-9.3.0-2.34/gcc/gcc-9.3.0/gcc/final.c:3074 > 0x73f8bf final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*) > /tmp/build-crosstools-xh-9.3.0-2.34/gcc/gcc-9.3.0/gcc/final.c:3153 > 0x73fbac final_1 > /tmp/build-crosstools-xh-9.3.0-2.34/gcc/gcc-9.3.0/gcc/final.c:2021 > 0x740618 rest_of_handle_final > /tmp/build-crosstools-xh-9.3.0-2.34/gcc/gcc-9.3.0/gcc/final.c:4659 > 0x740618 execute > /tmp/build-crosstools-xh-9.3.0-2.34/gcc/gcc-9.3.0/gcc/final.c:4737 > Please submit a full bug report, > with preprocessed source if appropriate. > Please include the complete backtrace with any bug report. > See <https://gcc.gnu.org/bugs/> for instructions. ^^^^^^^^^^^^^^^^^^^^^^^^^ That's totally out of my scope. I suspect it might have broken a bisect operation.

Regards, Willy _______________________________________________ kbuild-all mailing list -- kbuild-all(a)lists.01.org To unsubscribe send an email to kbuild-all-leave(a)lists.01.org