The following kernel warning is noticed on all arch and all devices while running selftests: core: unshare_test on Linux next-20240823 and next-20240826.

First seen on next-20240823. Good: next-20240822 BAD: next-20240823 and next-20240826

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

Crash log: -------- # selftests: core: unshare_test <4>[ 61.084149] ------------[ cut here ]------------ <4>[ 61.085175] WARNING: CPU: 0 PID: 477 at mm/util.c:671 __kvmalloc_node_noprof (mm/util.c:671 (discriminator 1)) <4>[ 61.088958] Modules linked in: crct10dif_ce sm3_ce sm3 sha3_ce sha512_ce sha512_arm64 drm fuse backlight dm_mod ip_tables x_tables <4>[ 61.093141] CPU: 0 UID: 0 PID: 477 Comm: unshare_test Not tainted 6.11.0-rc5-next-20240826 #1 <4>[ 61.094558] Hardware name: linux,dummy-virt (DT) <4>[ 61.096763] pstate: 23400009 (nzCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) <4>[ 61.097841] pc : __kvmalloc_node_noprof (mm/util.c:671 (discriminator 1)) <4>[ 61.099701] lr : __kvmalloc_node_noprof (mm/util.c:661) <4>[ 61.100448] sp : ffff800080abbce0 <4>[ 61.100819] x29: ffff800080abbcf0 x28: fff0000004549280 x27: 0000000000000000 <4>[ 61.101744] x26: 0000000000000000 x25: 0000000000000000 x24: fff0000003615e40 <4>[ 61.102512] x23: fff0000003615ec0 x22: bfafa45863b285c8 x21: 0000000200002000 <4>[ 61.103232] x20: 00000000ffffffff x19: 0000000000400cc0 x18: 0000000000000000 <4>[ 61.104053] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 <4>[ 61.104927] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 <4>[ 61.105752] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 <4>[ 61.106606] x8 : 0000000000000001 x7 : 0000000000000001 x6 : 0000000000000005 <4>[ 61.107377] x5 : 0000000000000000 x4 : fff0000004549280 x3 : 0000000000000000 <4>[ 61.108207] x2 : 0000000000000000 x1 : 000000007fffffff x0 : 0000000000000000 <4>[ 61.109262] Call trace: <4>[ 61.109619] __kvmalloc_node_noprof (mm/util.c:671 (discriminator 1)) <4>[ 61.110248] alloc_fdtable (fs/file.c:133) <4>[ 61.110751] expand_files (include/linux/atomic/atomic-arch-fallback.h:457 include/linux/atomic/atomic-instrumented.h:33 fs/file.c:177 fs/file.c:238) <4>[ 61.111171] ksys_dup3 (fs/file.c:1337) <4>[ 61.111596] __arm64_sys_dup3 (fs/file.c:1355) <4>[ 61.112006] invoke_syscall (arch/arm64/include/asm/current.h:19 arch/arm64/kernel/syscall.c:54) <4>[ 61.112480] el0_svc_common.constprop.0 (include/linux/thread_info.h:127 (discriminator 2) arch/arm64/kernel/syscall.c:140 (discriminator 2)) <4>[ 61.112955] do_el0_svc (arch/arm64/kernel/syscall.c:152) <4>[ 61.113384] el0_svc (arch/arm64/include/asm/irqflags.h:55 arch/arm64/include/asm/irqflags.h:76 arch/arm64/kernel/entry-common.c:165 arch/arm64/kernel/entry-common.c:178 arch/arm64/kernel/entry-common.c:713) <4>[ 61.113742] el0t_64_sync_handler (arch/arm64/kernel/entry-common.c:731) <4>[ 61.115181] el0t_64_sync (arch/arm64/kernel/entry.S:598) <4>[ 61.115709] ---[ end trace 0000000000000000 ]---

Crash Log links, -------- - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240826/tes...

Crash failed comparison: ---------- - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240826/tes...

metadata: ---- git describe: next-20240823 and next-20240826 git repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git sha: c79c85875f1af04040fe4492ed94ce37ad729c4d kernel config: https://storage.tuxsuite.com/public/linaro/lkft/builds/2l2pZRzhgRkPgXIKLJCI7... artifact location: https://storage.tuxsuite.com/public/linaro/lkft/builds/2l2pZRzhgRkPgXIKLJCI7... build url: https://storage.tuxsuite.com/public/linaro/lkft/builds/2l2pZRzhgRkPgXIKLJCI7... toolchain: clang-18 and gcc-13

Steps to reproduce: --------- - https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/tests/2l2paZVYTlo... - https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/tests/2l2paZVYTlo...

Please let me know if you need more information.

-- Linaro LKFT https://lkft.linaro.org