The selftests: core: unshare_test fails everywhere.

I have reported this upstream on 6.13 kernel and still it is open issue across multiple devices.

• https://lore.kernel.org/all/CA+G9fYuHGTKM5P+nEifZwfALPfO9uw7sraCrGo-c3YzR=JjwJg@mail.gmail.com/

Test log:

" [ 62.313835] kselftest: Running tests in core TAP version 13 1..2

timeout set to 45

selftests: core: close_range_test

TAP version 13

1..9

# Starting 9 tests from 1 test cases.

# RUN global.core_close_range ...

# OK global.core_close_range

ok 1 global.core_close_range

# RUN global.close_range_unshare ...

# OK global.close_range_unshare

ok 2 global.close_range_unshare

# RUN global.close_range_unshare_capped ...

# OK global.close_range_unshare_capped

ok 3 global.close_range_unshare_capped

# RUN global.close_range_cloexec ...

# OK global.close_range_cloexec

ok 4 global.close_range_cloexec

# RUN global.close_range_cloexec_unshare ...

# OK global.close_range_cloexec_unshare

ok 5 global.close_range_cloexec_unshare

# RUN global.close_range_cloexec_syzbot ...

# OK global.close_range_cloexec_syzbot

ok 6 global.close_range_cloexec_syzbot

# RUN global.close_range_cloexec_unshare_syzbot ...

# OK global.close_range_cloexec_unshare_syzbot

ok 7 global.close_range_cloexec_unshare_syzbot

# RUN global.close_range_bitmap_corruption ...

# OK global.close_range_bitmap_corruption

ok 8 global.close_range_bitmap_corrup[ 62.515243] ------------[ cut here ]------------

[ 62.515314] WARNING: CPU: 2 PID: 1397 at mm/slub.c:5026 __kvmalloc_node_noprof+0x434/0x488 [ 62.515417] Modules linked in: smsc smsc95xx usbnet phy_exynos5_usbdrd typec ramoops reed_solomon fuse drm backlight ip_tables x_tables [ 62.527437] CPU: 2 UID: 0 PID: 1397 Comm: unshare_test Not tainted 6.15.0-rc6-next-20250515 #1 PREEMPT [ 62.536808] Hardware name: WinLink E850-96 board (DT) [ 62.541843] pstate: 20400005 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 62.548786] pc : __kvmalloc_node_noprof+0x434/0x488 [ 62.553647] lr : __kvmalloc_node_noprof+0x38c/0x488 [ 62.558508] sp : ffff80008432bc80 [ 62.561807] x29: ffff80008432bcb0 x28: ffff000801ca5c80 x27: 0000000000000000 [ 62.568924] x26: 0000000000000000 x25: 00000000004028c0 x24: ffff8000803576f8 [ 62.576041] x23: 0000000000000000 x22: 00000000ffffffff x21: 0000000000400cc0 [ 62.583161] x20: 0000000200001e00 x19: 0000000000000000 x18: 0000000000000000 [ 62.590277] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 [ 62.597394] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 62.604512] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 [ 62.611630] x8 : 0000000000000001 x7 : ffff80008432bbe0 x6 : ffff8000820d6d40 [ 62.618749] x5 : 0000000000000000 x4 : ffff000801ca5c80 x3 : 0000000000000000 [ 62.625866] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 000000007fffffff [ 62.632988] Call trace: [ 62.635418] __kvmalloc_node_noprof+0x434/0x488 (P) [ 62.640282] alloc_fdtable+0x84/0x12c [ 62.643925] expand_files+0x74/0x2ec [ 62.647483] ksys_dup3+0x60/0x120 [ 62.650781] __arm64_sys_dup3+0x20/0x30 [ 62.654600] invoke_syscall+0x48/0x10c [ 62.658331] el0_svc_common.constprop.0+0x40/0xe0 [ 62.663020] do_el0_svc+0x1c/0x28 [ 62.666317] el0_svc+0x34/0x104 [ 62.669444] el0t_64_sync_handler+0x10c/0x138 [ 62.673782] el0t_64_sync+0x198/0x19c [ 62.677431] ---[ end trace 0000000000000000 ]--- tion

# RUN global.fcntl_created ...

# OK global.fcntl_created

ok 9 global.fcntl_created

# PASSED: 9 / 9 tests passed.

# Totals: pass:9 fail:0 xfail:0 xpass:0 skip:0 error:0

ok 1 selftests: core: close_range_test

timeout set to 45

selftests: core: unshare_test

TAP version 13

1..1

# Starting 1 tests from 1 test cases.

# RUN global.unshare_EMFILE ...

# unshare_test.c:60:unshare_EMFILE:Expected dup2(2, nr_open + 64) (-1) >= 0 (0)

# unshare_EMFILE: Test failed

# FAIL global.unshare_EMFILE

not ok 1 global.unshare_EMFILE

# FAILED: 0 / 1 tests passed.

# Totals: pass:0 fail:1 xfail:0 xpass:0 skip:0 error:0

not ok 2 selftests: core: unshare_test # exit=1

"