general protection fault, probably for non-canonical address 0xdffffc018f62f515: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x0000000c7b17a8a8-0x0000000c7b17a8af] CPU: 1 PID: 5102 Comm: syz-executor.1 Not tainted 6.9.0-rc7-syzkaller-00012-gdccb07f2914c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:hook_inode_free_security+0x5b/0xb0 security/landlock/fs.c:1047 Code: 8a fd 48 8b 1b 48 c7 c0 c4 4e d5 8d 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3e 48 63 05 33 59 65 09 48 01 c3 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 66 be 8a fd 48 83 3b 00 75 0d e8 RSP: 0018:ffffc9000307f9a8 EFLAGS: 00010212 RAX: 000000018f62f515 RBX: 0000000c7b17a8a8 RCX: ffff888027668000 RDX: 0000000000000000 RSI: 0000000000000040 RDI: ffff88805c0bb270 RBP: ffffffff8c01fb00 R08: ffffffff82132a15 R09: 1ffff1100b81765f R10: dffffc0000000000 R11: ffffffff846ff540 R12: dffffc0000000000 R13: 1ffff1100b817683 R14: dffffc0000000000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f43c42de000 CR3: 00000000635f8000 CR4: 0000000000350ef0 Call Trace: security_inode_free+0x4a/0xd0 security/security.c:1613 __destroy_inode+0x2d9/0x650 fs/inode.c:286 destroy_inode fs/inode.c:309 [inline] evict+0x521/0x630 fs/inode.c:682 dispose_list fs/inode.c:700 [inline] evict_inodes+0x5f9/0x690 fs/inode.c:750 generic_shutdown_super+0x9d/0x2d0 fs/super.c:626 kill_block_super+0x44/0x90 fs/super.c:1675 deactivate_locked_super+0xc6/0x130 fs/super.c:472 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1267 task_work_run+0x251/0x310 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa1b/0x27e0 kernel/exit.c:878 do_group_exit+0x207/0x2c0 kernel/exit.c:1027 __do_sys_exit_group kernel/exit.c:1038 [inline] __se_sys_exit_group kernel/exit.c:1036 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1036 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f731567dd69 Code: Unable to access opcode bytes at 0x7f731567dd3f. RSP: 002b:00007fff4f0804d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f73156c93a3 RCX: 00007f731567dd69 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000002 R08: 00007fff4f07e277 R09: 00007fff4f081790 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff4f081790 R13: 00007f73156c937e R14: 00000000000154d0 R15: 000000000000001e Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:hook_inode_free_security+0x5b/0xb0 security/landlock/fs.c:1047 Code: 8a fd 48 8b 1b 48 c7 c0 c4 4e d5 8d 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3e 48 63 05 33 59 65 09 48 01 c3 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 66 be 8a fd 48 83 3b 00 75 0d e8 RSP: 0018:ffffc9000307f9a8 EFLAGS: 00010212 RAX: 000000018f62f515 RBX: 0000000c7b17a8a8 RCX: ffff888027668000 RDX: 0000000000000000 RSI: 0000000000000040 RDI: ffff88805c0bb270 RBP: ffffffff8c01fb00 R08: ffffffff82132a15 R09: 1ffff1100b81765f R10: dffffc0000000000 R11: ffffffff846ff540 R12: dffffc0000000000 R13: 1ffff1100b817683 R14: dffffc0000000000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555587f03978 CR3: 0000000049876000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 8a fd mov %ch,%bh 2: 48 8b 1b mov (%rbx),%rbx 5: 48 c7 c0 c4 4e d5 8d mov $0xffffffff8dd54ec4,%rax c: 48 c1 e8 03 shr $0x3,%rax 10: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax 15: 84 c0 test %al,%al 17: 75 3e jne 0x57 19: 48 63 05 33 59 65 09 movslq 0x9655933(%rip),%rax # 0x9655953 20: 48 01 c3 add %rax,%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 66 be 8a fd call 0xfd8abe9f 39: 48 83 3b 00 cmpq $0x0,(%rbx) 3d: 75 0d jne 0x4c 3f: e8 .byte 0xe8