Hello,
kernel test robot noticed "WARNING:suspicious_RCU_usage" on:
commit: 5053ab0c89ee4ba827db6a4453af277321cb1a2e ("lib/xarray: introduce a new helper xas_get_order")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
[test failed on linux-next/master 8568bb2ccc278f344e6ac44af6ed010a90aa88dc]
in testcase: boot
compiler: clang-17
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+---------------------------------------------------------------------+------------+------------+
| | cc93de5055 | 5053ab0c89 |
+---------------------------------------------------------------------+------------+------------+
| WARNING:suspicious_RCU_usage | 0 | 6 |
| include/linux/xarray.h:#suspicious_rcu_dereference_check()usage | 0 | 6 |
| include/linux/xarray.h:#suspicious_rcu_dereference_protected()usage | 0 | 6 |
+---------------------------------------------------------------------+------------+------------+
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-lkp/[email protected]
[ 242.400377][ T1] WARNING: suspicious RCU usage
[ 242.401381][ T1] 6.9.0-rc2-00150-g5053ab0c89ee #1 Tainted: G W N
[ 242.402989][ T1] -----------------------------
[ 242.404031][ T1] include/linux/xarray.h:1201 suspicious rcu_dereference_check() usage!
[ 242.405805][ T1]
[ 242.405805][ T1] other info that might help us debug this:
[ 242.405805][ T1]
[ 242.407877][ T1]
[ 242.407877][ T1] rcu_scheduler_active = 2, debug_locks = 1
[ 242.409774][ T1] no locks held by swapper/0/1.
[ 242.410827][ T1]
[ 242.410827][ T1] stack backtrace:
[ 242.412091][ T1] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W N 6.9.0-rc2-00150-g5053ab0c89ee #1
[ 242.413055][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 242.413055][ T1] Call Trace:
[ 242.413055][ T1] <TASK>
[ 242.413055][ T1] dump_stack_lvl (lib/dump_stack.c:116)
[ 242.413055][ T1] lockdep_rcu_suspicious (include/linux/context_tracking.h:122)
[ 242.413055][ T1] xas_start (include/linux/xarray.h:?)
[ 242.413055][ T1] xas_store (lib/xarray.c:237 lib/xarray.c:789)
[ 242.413055][ T1] ? do_raw_spin_unlock (arch/x86/include/asm/atomic.h:23)
[ 242.413055][ T1] ? xas_load (lib/xarray.c:237)
[ 242.413055][ T1] check_xas_get_order (lib/test_xarray.c:?)
[ 242.413055][ T1] xarray_checks (lib/test_xarray.c:2070)
[ 242.413055][ T1] do_one_initcall (init/main.c:1238)
[ 242.413055][ T1] ? __cfi_xarray_checks (lib/test_xarray.c:2054)
[ 242.413055][ T1] ? kasan_save_track (arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69)
[ 242.413055][ T1] ? kasan_save_track (mm/kasan/common.c:48 mm/kasan/common.c:68)
[ 242.413055][ T1] ? __kasan_kmalloc (mm/kasan/common.c:391)
[ 242.413055][ T1] ? __kmalloc_noprof (include/linux/kasan.h:211 mm/slub.c:4186 mm/slub.c:4199)
[ 242.413055][ T1] ? do_initcalls (init/main.c:1310)
[ 242.432382][ T1] ? kernel_init_freeable (init/main.c:1552)
[ 242.432382][ T1] ? kernel_init (init/main.c:1439)
[ 242.432382][ T1] ? ret_from_fork (arch/x86/kernel/process.c:153)
[ 242.432382][ T1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
[ 242.432382][ T1] ? parameq (kernel/params.c:81)
[ 242.432382][ T1] ? parameq (include/linux/fortify-string.h:250 kernel/params.c:99)
[ 242.432382][ T1] ? __cfi_ignore_unknown_bootoption (init/main.c:1285)
[ 242.432382][ T1] ? parse_args (kernel/params.c:?)
[ 242.432382][ T1] ? __kasan_kmalloc (mm/kasan/common.c:391)
[ 242.432382][ T1] do_initcall_level (init/main.c:1299)
[ 242.432382][ T1] do_initcalls (init/main.c:1313)
[ 242.432382][ T1] kernel_init_freeable (init/main.c:1552)
[ 242.432382][ T1] ? __cfi_kernel_init (init/main.c:1429)
[ 242.432382][ T1] kernel_init (init/main.c:1439)
[ 242.432382][ T1] ? __cfi_kernel_init (init/main.c:1429)
[ 242.432382][ T1] ret_from_fork (arch/x86/kernel/process.c:153)
[ 242.432382][ T1] ? __cfi_kernel_init (init/main.c:1429)
[ 242.432382][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
[ 242.432382][ T1] </TASK>
[ 242.451896][ T1]
[ 242.452554][ T1] =============================
[ 242.453552][ T1] WARNING: suspicious RCU usage
[ 242.454581][ T1] 6.9.0-rc2-00150-g5053ab0c89ee #1 Tainted: G W N
[ 242.456217][ T1] -----------------------------
[ 242.457261][ T1] include/linux/xarray.h:1217 suspicious rcu_dereference_check() usage!
[ 242.458920][ T1]
[ 242.458920][ T1] other info that might help us debug this:
[ 242.458920][ T1]
[ 242.461156][ T1]
[ 242.461156][ T1] rcu_scheduler_active = 2, debug_locks = 1
[ 242.462797][ T1] no locks held by swapper/0/1.
[ 242.463791][ T1]
[ 242.463791][ T1] stack backtrace:
[ 242.465126][ T1] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W N 6.9.0-rc2-00150-g5053ab0c89ee #1
[ 242.467116][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 242.468617][ T1] Call Trace:
[ 242.468617][ T1] <TASK>
[ 242.468617][ T1] dump_stack_lvl (lib/dump_stack.c:116)
[ 242.468617][ T1] lockdep_rcu_suspicious (include/linux/context_tracking.h:122)
[ 242.468617][ T1] xas_descend (include/linux/xarray.h:?)
[ 242.468617][ T1] xas_store (lib/xarray.c:244 lib/xarray.c:789)
[ 242.468617][ T1] ? do_raw_spin_unlock (arch/x86/include/asm/atomic.h:23)
[ 242.468617][ T1] ? xas_load (lib/xarray.c:244)
[ 242.468617][ T1] check_xas_get_order (lib/test_xarray.c:?)
[ 242.468617][ T1] xarray_checks (lib/test_xarray.c:2070)
[ 242.468617][ T1] do_one_initcall (init/main.c:1238)
[ 242.468617][ T1] ? __cfi_xarray_checks (lib/test_xarray.c:2054)
[ 242.468617][ T1] ? kasan_save_track (arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69)
[ 242.468617][ T1] ? kasan_save_track (mm/kasan/common.c:48 mm/kasan/common.c:68)
[ 242.468617][ T1] ? __kasan_kmalloc (mm/kasan/common.c:391)
[ 242.468617][ T1] ? __kmalloc_noprof (include/linux/kasan.h:211 mm/slub.c:4186 mm/slub.c:4199)
[ 242.468617][ T1] ? do_initcalls (init/main.c:1310)
[ 242.468617][ T1] ? kernel_init_freeable (init/main.c:1552)
[ 242.468617][ T1] ? kernel_init (init/main.c:1439)
[ 242.468617][ T1] ? ret_from_fork (arch/x86/kernel/process.c:153)
[ 242.488373][ T1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
[ 242.488373][ T1] ? parameq (kernel/params.c:81)
[ 242.488373][ T1] ? parameq (include/linux/fortify-string.h:250 kernel/params.c:99)
[ 242.488373][ T1] ? __cfi_ignore_unknown_bootoption (init/main.c:1285)
[ 242.488373][ T1] ? parse_args (kernel/params.c:?)
[ 242.488373][ T1] ? __kasan_kmalloc (mm/kasan/common.c:391)
[ 242.488373][ T1] do_initcall_level (init/main.c:1299)
[ 242.488373][ T1] do_initcalls (init/main.c:1313)
[ 242.488373][ T1] kernel_init_freeable (init/main.c:1552)
[ 242.488373][ T1] ? __cfi_kernel_init (init/main.c:1429)
[ 242.488373][ T1] kernel_init (init/main.c:1439)
[ 242.488373][ T1] ? __cfi_kernel_init (init/main.c:1429)
[ 242.488373][ T1] ret_from_fork (arch/x86/kernel/process.c:153)
[ 242.488373][ T1] ? __cfi_kernel_init (init/main.c:1429)
[ 242.488373][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
[ 242.488373][ T1] </TASK>
[ 242.505758][ T1]
[ 242.506807][ T1] =============================
[ 242.507842][ T1] WARNING: suspicious RCU usage
[ 242.508960][ T1] 6.9.0-rc2-00150-g5053ab0c89ee #1 Tainted: G W N
[ 242.510512][ T1] -----------------------------
[ 242.511564][ T1] include/linux/xarray.h:1226 suspicious rcu_dereference_protected() usage!
[ 242.513461][ T1]
[ 242.513461][ T1] other info that might help us debug this:
[ 242.513461][ T1]
[ 242.515528][ T1]
[ 242.515528][ T1] rcu_scheduler_active = 2, debug_locks = 1
[ 242.517330][ T1] no locks held by swapper/0/1.
[ 242.518364][ T1]
[ 242.518364][ T1] stack backtrace:
[ 242.519666][ T1] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W N 6.9.0-rc2-00150-g5053ab0c89ee #1
[ 242.520702][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 242.520702][ T1] Call Trace:
[ 242.520702][ T1] <TASK>
[ 242.520702][ T1] dump_stack_lvl (lib/dump_stack.c:116)
[ 242.520702][ T1] lockdep_rcu_suspicious (include/linux/context_tracking.h:122)
[ 242.520702][ T1] xas_store (include/linux/xarray.h:?)
[ 242.520702][ T1] check_xas_get_order (lib/test_xarray.c:?)
[ 242.520702][ T1] xarray_checks (lib/test_xarray.c:2070)
[ 242.520702][ T1] do_one_initcall (init/main.c:1238)
[ 242.520702][ T1] ? __cfi_xarray_checks (lib/test_xarray.c:2054)
[ 242.520702][ T1] ? kasan_save_track (arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69)
[ 242.520702][ T1] ? kasan_save_track (mm/kasan/common.c:48 mm/kasan/common.c:68)
[ 242.520702][ T1] ? __kasan_kmalloc (mm/kasan/common.c:391)
[ 242.520702][ T1] ? __kmalloc_noprof (include/linux/kasan.h:211 mm/slub.c:4186 mm/slub.c:4199)
[ 242.520702][ T1] ? do_initcalls (init/main.c:1310)
[ 242.520702][ T1] ? kernel_init_freeable (init/main.c:1552)
[ 242.520702][ T1] ? kernel_init (init/main.c:1439)
[ 242.520702][ T1] ? ret_from_fork (arch/x86/kernel/process.c:153)
[ 242.520702][ T1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
[ 242.520702][ T1] ? parameq (kernel/params.c:81)
[ 242.520702][ T1] ? parameq (include/linux/fortify-string.h:250 kernel/params.c:99)
[ 242.520702][ T1] ? __cfi_ignore_unknown_bootoption (init/main.c:1285)
[ 242.520702][ T1] ? parse_args (kernel/params.c:?)
[ 242.520702][ T1] ? __kasan_kmalloc (mm/kasan/common.c:391)
[ 242.520702][ T1] do_initcall_level (init/main.c:1299)
[ 242.520702][ T1] do_initcalls (init/main.c:1313)
[ 242.520702][ T1] kernel_init_freeable (init/main.c:1552)
[ 242.520702][ T1] ? __cfi_kernel_init (init/main.c:1429)
[ 242.520702][ T1] kernel_init (init/main.c:1439)
[ 242.520702][ T1] ? __cfi_kernel_init (init/main.c:1429)
[ 242.520702][ T1] ret_from_fork (arch/x86/kernel/process.c:153)
[ 242.520702][ T1] ? __cfi_kernel_init (init/main.c:1429)
[ 242.520702][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
[ 242.520702][ T1] </TASK>
[ 242.560253][ T1]
[ 242.560872][ T1] =============================
[ 242.561861][ T1] WARNING: suspicious RCU usage
[ 242.562854][ T1] 6.9.0-rc2-00150-g5053ab0c89ee #1 Tainted: G W N
[ 242.564501][ T1] -----------------------------
[ 242.565558][ T1] include/linux/xarray.h:1242 suspicious rcu_dereference_protected() usage!
[ 242.567300][ T1]
[ 242.567300][ T1] other info that might help us debug this:
[ 242.567300][ T1]
[ 242.569488][ T1]
[ 242.569488][ T1] rcu_scheduler_active = 2, debug_locks = 1
[ 242.571117][ T1] no locks held by swapper/0/1.
[ 242.572108][ T1]
[ 242.572108][ T1] stack backtrace:
[ 242.573465][ T1] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W N 6.9.0-rc2-00150-g5053ab0c89ee #1
[ 242.575431][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 242.576938][ T1] Call Trace:
[ 242.576938][ T1] <TASK>
[ 242.576938][ T1] dump_stack_lvl (lib/dump_stack.c:116)
[ 242.576938][ T1] lockdep_rcu_suspicious (include/linux/context_tracking.h:122)
[ 242.576938][ T1] xas_store (include/linux/xarray.h:?)
[ 242.576938][ T1] check_xas_get_order (lib/test_xarray.c:?)
[ 242.576938][ T1] xarray_checks (lib/test_xarray.c:2070)
[ 242.576938][ T1] do_one_initcall (init/main.c:1238)
[ 242.576938][ T1] ? __cfi_xarray_checks (lib/test_xarray.c:2054)
[ 242.576938][ T1] ? kasan_save_track (arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69)
[ 242.576938][ T1] ? kasan_save_track (mm/kasan/common.c:48 mm/kasan/common.c:68)
[ 242.576938][ T1] ? __kasan_kmalloc (mm/kasan/common.c:391)
[ 242.576938][ T1] ? __kmalloc_noprof (include/linux/kasan.h:211 mm/slub.c:4186 mm/slub.c:4199)
[ 242.576938][ T1] ? do_initcalls (init/main.c:1310)
[ 242.576938][ T1] ? kernel_init_freeable (init/main.c:1552)
[ 242.576938][ T1] ? kernel_init (init/main.c:1439)
[ 242.576938][ T1] ? ret_from_fork (arch/x86/kernel/process.c:153)
[ 242.576938][ T1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
[ 242.576938][ T1] ? parameq (kernel/params.c:81)
[ 242.576938][ T1] ? parameq (include/linux/fortify-string.h:250 kernel/params.c:99)
[ 242.576938][ T1] ? __cfi_ignore_unknown_bootoption (init/main.c:1285)
[ 242.576938][ T1] ? parse_args (kernel/params.c:?)
[ 242.576938][ T1] ? __kasan_kmalloc (mm/kasan/common.c:391)
[ 242.576938][ T1] do_initcall_level (init/main.c:1299)
[ 242.576938][ T1] do_initcalls (init/main.c:1313)
[ 242.576938][ T1] kernel_init_freeable (init/main.c:1552)
[ 242.576938][ T1] ? __cfi_kernel_init (init/main.c:1429)
[ 242.576938][ T1] kernel_init (init/main.c:1439)
[ 242.576938][ T1] ? __cfi_kernel_init (init/main.c:1429)
[ 242.576938][ T1] ret_from_fork (arch/x86/kernel/process.c:153)
[ 242.576938][ T1] ? __cfi_kernel_init (init/main.c:1429)
[ 242.576938][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
[ 242.576938][ T1] </TASK>
[ 260.158718][ T1] XArray: 158742827 of 158742827 tests passed
[ 260.160114][ T1]
[ 260.160114][ T1] TEST STARTING
[ 260.160114][ T1]
BUG: kernel hang in boot stage
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240406/[email protected]
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki