Unable to handle kernel NULL pointer dereference at virtual address 0000000000000c48
Oops [#1]
Modules linked in:
CPU: 1 PID: 3291 Comm: modprobe 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 : ffffffe006da3ab0
 gp : ffffffff83f967d8 tp : ffffffe00c68df00 t0 : ffffffe006da3c58
 t1 : 0000000000000001 t2 : 0000000000000018 s0 : ffffffe006da3b50
 s1 : ffffffe005602140 a0 : 0000000000000000 a1 : ffffffe006da3e9c
 a2 : 1ffffffff07aa51f a3 : 0000000000000c48 a4 : 0000000000000000
 a5 : ffffffff82e4b3b0 a6 : 0000000000f00000 a7 : ffffffff8038ca52
 s2 : ffffffff83f96adc s3 : 0000000000000c40 s4 : 0000000000001000
 s5 : ffffffff8080ab12 s6 : ffffffff83f9a0d0 s7 : 0000000000000000
 s8 : 0000000000000c40 s9 : 0000000000000001 s10: ffffffe009ddf6e0
 s11: 0000003fcde82000 t3 : b62b3bae7aa96200 t4 : ffffffc400db4781
 t5 : ffffffc400db478b t6 : 0000000000000005
status: 0000000000000120 badaddr: 0000000000000c48 cause: 000000000000000d
[<ffffffff803e3568>] slab_alloc_node mm/slub.c:2900 [inline]
[<ffffffff803e3568>] slab_alloc mm/slub.c:2967 [inline]
[<ffffffff803e3568>] __kmalloc+0xce/0x388 mm/slub.c:4111
[<ffffffff8080ab12>] kmalloc include/linux/slab.h:596 [inline]
[<ffffffff8080ab12>] tomoyo_realpath_from_path+0x9c/0x3f4 security/tomoyo/realpath.c:254
[<ffffffff808041fa>] tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
[<ffffffff808041fa>] tomoyo_path_perm+0x11e/0x2d8 security/tomoyo/file.c:822
[<ffffffff8080bb0c>] tomoyo_inode_getattr+0x1e/0x28 security/tomoyo/tomoyo.c:122
[<ffffffff807ea3ce>] security_inode_getattr+0x82/0xc6 security/security.c:1333
[<ffffffff804356dc>] vfs_getattr fs/stat.c:139 [inline]
[<ffffffff804356dc>] vfs_fstat+0x54/0xc8 fs/stat.c:164
[<ffffffff80435784>] __do_sys_newfstat+0x34/0x88 fs/stat.c:404
[<ffffffff804358da>] sys_newfstat+0x22/0x2e fs/stat.c:401
[<ffffffff80005150>] ret_from_syscall+0x0/0x2
---[ end trace 34113d47542237fa ]---