Unable to handle kernel NULL pointer dereference at virtual address 0000000000000c40 Oops [#1] Modules linked in: CPU: 0 PID: 2864 Comm: init Not tainted 5.14.0-syzkaller #0 Hardware name: riscv-virtio,qemu (DT) epc : slab_alloc_node mm/slub.c:2900 [inline] epc : slab_alloc mm/slub.c:2967 [inline] epc : __kmalloc+0xce/0x388 mm/slub.c:4111 ra : slab_pre_alloc_hook mm/slab.h:494 [inline] ra : slab_alloc_node mm/slub.c:2880 [inline] ra : slab_alloc mm/slub.c:2967 [inline] ra : __kmalloc+0x6e/0x388 mm/slub.c:4111 epc : ffffffff803e3568 ra : ffffffff803e3508 sp : ffffffe0058ef7f0 gp : ffffffff83f967d8 tp : ffffffe00b8bc740 t0 : 0000000000000000 t1 : 0000000000000001 t2 : 0000000000000000 s0 : ffffffe0058ef890 s1 : ffffffe005602140 a0 : 0000000000000000 a1 : ffffffe0058efbdc a2 : 1ffffffc01717a0f a3 : 0000000000000c40 a4 : 0000000000000001 a5 : ffffffff82e4b3b0 a6 : 0000000000f00000 a7 : ffffffff8038ca52 s2 : ffffffff83f96adc s3 : 0000000000000c40 s4 : 0000000000001000 s5 : ffffffff8080ab12 s6 : ffffffff83f9a0d0 s7 : 0000000000000000 s8 : 0000000000000c40 s9 : 0000000000000001 s10: ffffffe009e1cf88 s11: ffffffe006bc7500 t3 : 5f12fd81d3558600 t4 : ffffffc401748c21 t5 : ffffffc401748c22 t6 : ffffffe00ba4610c status: 0000000000000120 badaddr: 0000000000000c40 cause: 000000000000000d [] slab_alloc_node mm/slub.c:2900 [inline] [] slab_alloc mm/slub.c:2967 [inline] [] __kmalloc+0xce/0x388 mm/slub.c:4111 [] kmalloc include/linux/slab.h:596 [inline] [] tomoyo_realpath_from_path+0x9c/0x3f4 security/tomoyo/realpath.c:254 [] tomoyo_init_log+0x7a2/0x13aa security/tomoyo/audit.c:263 [] tomoyo_supervisor+0x1bc/0xb0c security/tomoyo/common.c:2097 [] tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline] [] tomoyo_env_perm+0x100/0x120 security/tomoyo/environ.c:63 [] tomoyo_environ security/tomoyo/domain.c:672 [inline] [] tomoyo_find_next_domain+0xd24/0x109a security/tomoyo/domain.c:879 [] tomoyo_bprm_check_security security/tomoyo/tomoyo.c:101 [inline] [] tomoyo_bprm_check_security+0xdc/0x136 security/tomoyo/tomoyo.c:91 [] security_bprm_check+0x44/0x96 security/security.c:866 [] search_binary_handler fs/exec.c:1709 [inline] [] exec_binprm fs/exec.c:1762 [inline] [] bprm_execve fs/exec.c:1831 [inline] [] bprm_execve+0x4ba/0x10a6 fs/exec.c:1793 [] do_execveat_common+0x28e/0x308 fs/exec.c:1920 [] do_execve fs/exec.c:1988 [inline] [] __do_sys_execve fs/exec.c:2064 [inline] [] sys_execve+0x32/0x40 fs/exec.c:2059 [] ret_from_syscall+0x0/0x2 ---[ end trace b2741b65d97306c8 ]---