BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 994b6067 P4D 994b6067 PUD 91a47067 PMD 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8511 Comm: syz-executor.3 Not tainted 5.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__read_once_size include/linux/compiler.h:252 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3f/0x60 kernel/kcov.c:202
Code: c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 04 14 00 00 00 74 2c 8b 91 e0 13 00 00 83 fa 02 75 21 48 8b 91 e8 13 00 00 <48> 8b 32 48 8d 7e 01 8b 89 e4 13 00 00 48 39 cf 73 08 48 89 44 f2
RSP: 0018:ffffc90017fcfc90 EFLAGS: 00010246
RAX: ffffffff83616d37 RBX: dffffc0000000000 RCX: ffff88805d9ca080
RDX: 0000000000000000 RSI: 0000000000000397 RDI: 0000000000000398
RBP: 0000000000000002 R08: ffffffff8361bd99 R09: ffffffff8362df72
R10: 0000000000000002 R11: ffff88805d9ca080 R12: ffff888092ed3780
R13: ffff888091735d90 R14: ffff888092ed3980 R15: 0000000000000000
FS: 00007f7d8722c700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000008f720000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tomoyo_check_acl+0x1e7/0x3d0 security/tomoyo/domain.c:171
tomoyo_path_number_perm+0x382/0x690 security/tomoyo/file.c:733
security_file_ioctl+0x55/0xb0 security/security.c:1465
ksys_ioctl fs/ioctl.c:765 [inline]
__do_sys_ioctl fs/ioctl.c:780 [inline]
__se_sys_ioctl+0x48/0x160 fs/ioctl.c:778
do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295
entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45ca59
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f7d8722bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e84e0 RCX: 000000000045ca59
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000003cc R14: 00000000004c6799 R15: 00007f7d8722c6d4
Modules linked in:
CR2: 0000000000000000
---[ end trace c1502e973e218a31 ]---
RIP: 0010:__read_once_size include/linux/compiler.h:252 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3f/0x60 kernel/kcov.c:202
Code: c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 04 14 00 00 00 74 2c 8b 91 e0 13 00 00 83 fa 02 75 21 48 8b 91 e8 13 00 00 <48> 8b 32 48 8d 7e 01 8b 89 e4 13 00 00 48 39 cf 73 08 48 89 44 f2
RSP: 0018:ffffc90017fcfc90 EFLAGS: 00010246
RAX: ffffffff83616d37 RBX: dffffc0000000000 RCX: ffff88805d9ca080
RDX: 0000000000000000 RSI: 0000000000000397 RDI: 0000000000000398
RBP: 0000000000000002 R08: ffffffff8361bd99 R09: ffffffff8362df72
R10: 0000000000000002 R11: ffff88805d9ca080 R12: ffff888092ed3780
R13: ffff888091735d90 R14: ffff888092ed3980 R15: 0000000000000000
FS: 00007f7d8722c700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc479e168f0 CR3: 000000008f720000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400