Hi, I recently enabled several security module options in my test system.
CONFIG_SECURITY=y CONFIG_SECURITY_APPARMOR=y CONFIG_SECURITY_APPARMOR_KUNIT_TEST=y CONFIG_SECURITY_LANDLOCK=y CONFIG_SECURITY_LANDLOCK_KUNIT_TEST=y CONFIG_SECURITY_LOCKDOWN_LSM=y CONFIG_SECURITY_LOCKDOWN_LSM_EARLY=y CONFIG_SECURITY_YAMA=y CONFIG_SECURITY_LOADPIN=y CONFIG_SECURITY_SAFESETID=y CONFIG_BPF_LSM=y CONFIG_LSM="landlock,lockdown,yama,loadpin,safesetid,bpf" When running ppc tests in qemu with the above enabled on top of SMP configuratins such as corenet32_smp_defconfig or mpc85xx_smp_defconfig, I get the following runtime warning. ... LSM: initializing lsm=lockdown,capability,landlock,yama,loadpin,safesetid ------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at kernel/smp.c:779 smp_call_function_many_cond+0x518/0x9d4 Modules linked in: CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.11.0-rc2-00127-g2e3e7093e9c8 #1 Hardware name: MPC8544DS e500v2 0x80210030 MPC8544 DS NIP: c0172ca8 LR: c01731b0 CTR: 00000000 REGS: c2669d60 TRAP: 0700 Not tainted (6.11.0-rc2-00127-g2e3e7093e9c8) MSR: 00021000 <CE,ME> CR: 24004288 XER: 20000000 GPR00: c002255c c2669e50 c253b5c0 c267b484 00000000 00000000 00000001 c2680000 GPR08: 00000000 00000003 c2680000 00000000 44004288 020a1e18 00000000 00000000 GPR16: 00000000 00000000 00000001 00000000 c0000000 c01731b0 00000000 c267b484 GPR24: c00224fc c0773760 c0770b50 00000000 00000000 00029000 00000000 00000000 NIP [c0172ca8] smp_call_function_many_cond+0x518/0x9d4 LR [c01731b0] smp_call_function+0x3c/0x58 Call Trace: [c2669eb0] [84000282] 0x84000282 [c2669ec0] [c002255c] flush_tlb_kernel_range+0x2c/0x50 [c2669ed0] [c0023b8c] patch_instruction+0x108/0x1b0 [c2669ef0] [c00188a4] arch_static_call_transform+0x104/0x148 [c2669f10] [c2033ebc] security_add_hooks+0x138/0x24c [c2669f40] [c2032e24] capability_init+0x24/0x38 [c2669f50] [c203322c] initialize_lsm+0x48/0x90 [c2669f70] [c2033b68] security_init+0x31c/0x538 [c2669fa0] [c2001154] start_kernel+0x5d4/0x81c [c2669ff0] [c0000478] set_ivor+0x150/0x18c Code: 91220000 81620004 3d20c209 3929e478 556b103a 7c84582e 7c89202e 81220000 2c040000 3929ffff 91220000 40a2fbb8 <0fe00000> 4bfffbb0 80e20000 2c070000 irq event stamp: 1204 hardirqs last enabled at (1203): [<c11d85f8>] _raw_spin_unlock_irqrestore+0x70/0xa8 hardirqs last disabled at (1204): [<c0023bcc>] patch_instruction+0x148/0x1b0 softirqs last enabled at (50): [<c0064b4c>] handle_softirqs+0x348/0x508 softirqs last disabled at (43): [<c0006fd0>] do_softirq_own_stack+0x34/0x4c ---[ end trace 0000000000000000 ]--- landlock: Up and running. Yama: becoming mindful. LoadPin: ready to pin (currently not enforcing) ... Any idea how that can be fixed ? Thanks, Guenter
