On 07/04/2024 09:12, Kefeng Wang wrote: > If bad map or access, directly set si_code to SEGV_MAPRR or SEGV_ACCERR, > also set fault to 0 and goto error handling, which make us to drop the > arch's special vm fault reason. > > Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> > --- > arch/arm64/mm/fault.c | 41 ++++++++++++++++++----------------------- > 1 file changed, 18 insertions(+), 23 deletions(-) Hi Kefeng, While running LTP test suite, I observed that few test cases are unable to kill exe when run against next-master(next-20240409) kernel with Arm64 on JUNO in our CI. I can send the full logs if required, but it doesn't say much. A bisect identified cf0049a15207a5a78798105eff789c2025bcf652 as the first bad commit. Bisected it on the tag "next-20240409" at repo "https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git";. This works fine on Linux version v6.9-rc3 Here are some of the failing test cases in LTP quickhit: ----------------------------- chdir01 link04 select03 unlink07 Failure log: ----------- 06:06:49.288908 Test timeouted, sending SIGKILL! 06:06:54.293806 Test timeouted, sending SIGKILL! 06:06:59.296872 Test timeouted, sending SIGKILL! 06:07:04.292044 Test timeouted, sending SIGKILL! 06:07:09.290185 Test timeouted, sending SIGKILL! 06:07:14.295134 Test timeouted, sending SIGKILL! 06:07:19.293279 Test timeouted, sending SIGKILL! 06:07:24.292405 Test timeouted, sending SIGKILL! 06:07:24.292790 Cannot kill test processes! 06:07:24.296564 Congratulation, likely test hit a kernel bug. 06:07:24.301315 Exiting uncleanly... Bisect log: ---------- git bisect start # good: [fec50db7033ea478773b159e0e2efb135270e3b7] Linux 6.9-rc3 git bisect good fec50db7033ea478773b159e0e2efb135270e3b7 # bad: [a053fd3ca5d1b927a8655f239c84b0d790218fda] Add linux-next specific files for 20240409 git bisect bad a053fd3ca5d1b927a8655f239c84b0d790218fda # bad: [4eb0063b031ea720cd8971e3e3d2426d27c5d7a6] Merge branch 'mtd/next' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git git bisect bad 4eb0063b031ea720cd8971e3e3d2426d27c5d7a6 # bad: [24dde11bfadd5f38c6cca3cea6f16971bd10dc86] Merge branch 'for-next' of git://github.com/Xilinx/linux-xlnx.git git bisect bad 24dde11bfadd5f38c6cca3cea6f16971bd10dc86 # bad: [bef23348d7e75c502399ba1a24627aa447b816dc] Merge branch 'mm-everything' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm git bisect bad bef23348d7e75c502399ba1a24627aa447b816dc # good: [3317f7faabc24b500c26d02615ac75ca2786e272] mm: swap: free_swap_and_cache_nr() as batched free_swap_and_cache() git bisect good 3317f7faabc24b500c26d02615ac75ca2786e272 # good: [541970e62546ff5c96622669f2796d43b1a406e3] Merge branch 'gpio/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux.git git bisect good 541970e62546ff5c96622669f2796d43b1a406e3 # bad: [1df265717e0f9d96079073189f6e6c52a48e493c] __mod_memcg_lruvec_state-enhance-diagnostics-fix git bisect bad 1df265717e0f9d96079073189f6e6c52a48e493c # bad: [19ab4054346474c2b456f9bff6a98e41e5e46224] hugetlb: Simplify hugetlb_wp() arguments git bisect bad 19ab4054346474c2b456f9bff6a98e41e5e46224 # good: [75ef450aa9828ca20817c46c5b99f131156f6eee] x86: mm: accelerate pagefault when badaccess git bisect good 75ef450aa9828ca20817c46c5b99f131156f6eee # bad: [c6b5a19e679bb713efd57d82f9080f780e0bb60a] mm/treewide: rename CONFIG_HAVE_FAST_GUP to CONFIG_HAVE_GUP_FAST git bisect bad c6b5a19e679bb713efd57d82f9080f780e0bb60a # bad: [01446d1e9e627945664f2a1daa53e8720946d0cd] mm: remove struct page from get_shadow_from_swap_cache git bisect bad 01446d1e9e627945664f2a1daa53e8720946d0cd # bad: [8f9d6a30dd992c44debea3161083a6c2cd3ad87f] arm: mm: drop VM_FAULT_BADMAP/VM_FAULT_BADACCESS git bisect bad 8f9d6a30dd992c44debea3161083a6c2cd3ad87f # bad: [cf0049a15207a5a78798105eff789c2025bcf652] arm64: mm: drop VM_FAULT_BADMAP/VM_FAULT_BADACCESS git bisect bad cf0049a15207a5a78798105eff789c2025bcf652 # first bad commit: [cf0049a15207a5a78798105eff789c2025bcf652] arm64: mm: drop VM_FAULT_BADMAP/VM_FAULT_BADACCESSgit bisect log Thanks, Aishwarya
