BUG: unable to handle page fault for address: fffffffffffffff0 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD cd7a067 P4D cd7a067 PUD cd7c067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 2 PID: 7672 Comm: syz-executor.2 Not tainted 6.7.0-rc7-syzkaller-00051-g2639772a11c8 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:set_gid fs/tracefs/inode.c:224 [inline] RIP: 0010:tracefs_apply_options.isra.0+0x3c2/0x9c0 fs/tracefs/inode.c:337 Code: 4c 89 ff 48 83 ef 10 74 45 48 89 7c 24 10 e8 65 14 41 fe 48 8b 7c 24 10 48 89 fa 48 c1 ea 03 42 80 3c 22 00 0f 85 30 05 00 00 <49> 8b 47 f0 31 ff 83 e0 02 48 89 c6 48 89 44 24 10 e8 c8 0f 41 fe RSP: 0018:ffffc900036bfc90 EFLAGS: 00010246 RAX: 0000000000005000 RBX: ffff888027370cc8 RCX: ffffc90006001000 RDX: 1ffffffffffffffe RSI: ffffffff83465deb RDI: fffffffffffffff0 RBP: ffff8880424b7608 R08: 0000000000000001 R09: fffff520006d7f84 R10: 0000000000000003 R11: 0000000000000002 R12: dffffc0000000000 R13: ffff8880424b7720 R14: ffff888027370c50 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:00000000f7f97b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: fffffffffffffff0 CR3: 000000001d349000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tracefs_remount+0x6c/0x80 fs/tracefs/inode.c:353 legacy_reconfigure+0x119/0x180 fs/fs_context.c:685 reconfigure_super+0x44f/0xb10 fs/super.c:1143 do_remount fs/namespace.c:2884 [inline] path_mount+0x16f2/0x1ed0 fs/namespace.c:3656 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount fs/namespace.c:3863 [inline] __ia32_sys_mount+0x291/0x310 fs/namespace.c:3863 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x62/0xe0 arch/x86/entry/common.c:321 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:346 entry_SYSENTER_compat_after_hwframe+0x70/0x7a RIP: 0023:0xf7f9c579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7f975ac EFLAGS: 00000292 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000200000c0 RDX: 0000000000000000 RSI: 0000000002200022 RDI: 0000000020000140 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: CR2: fffffffffffffff0 ---[ end trace 0000000000000000 ]--- RIP: 0010:set_gid fs/tracefs/inode.c:224 [inline] RIP: 0010:tracefs_apply_options.isra.0+0x3c2/0x9c0 fs/tracefs/inode.c:337 Code: 4c 89 ff 48 83 ef 10 74 45 48 89 7c 24 10 e8 65 14 41 fe 48 8b 7c 24 10 48 89 fa 48 c1 ea 03 42 80 3c 22 00 0f 85 30 05 00 00 <49> 8b 47 f0 31 ff 83 e0 02 48 89 c6 48 89 44 24 10 e8 c8 0f 41 fe RSP: 0018:ffffc900036bfc90 EFLAGS: 00010246 RAX: 0000000000005000 RBX: ffff888027370cc8 RCX: ffffc90006001000 RDX: 1ffffffffffffffe RSI: ffffffff83465deb RDI: fffffffffffffff0 RBP: ffff8880424b7608 R08: 0000000000000001 R09: fffff520006d7f84 R10: 0000000000000003 R11: 0000000000000002 R12: dffffc0000000000 R13: ffff8880424b7720 R14: ffff888027370c50 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:00000000f7f97b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: fffffffffffffff0 CR3: 000000001d349000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4c 89 ff mov %r15,%rdi 3: 48 83 ef 10 sub $0x10,%rdi 7: 74 45 je 0x4e 9: 48 89 7c 24 10 mov %rdi,0x10(%rsp) e: e8 65 14 41 fe call 0xfe411478 13: 48 8b 7c 24 10 mov 0x10(%rsp),%rdi 18: 48 89 fa mov %rdi,%rdx 1b: 48 c1 ea 03 shr $0x3,%rdx 1f: 42 80 3c 22 00 cmpb $0x0,(%rdx,%r12,1) 24: 0f 85 30 05 00 00 jne 0x55a * 2a: 49 8b 47 f0 mov -0x10(%r15),%rax <-- trapping instruction 2e: 31 ff xor %edi,%edi 30: 83 e0 02 and $0x2,%eax 33: 48 89 c6 mov %rax,%rsi 36: 48 89 44 24 10 mov %rax,0x10(%rsp) 3b: e8 c8 0f 41 fe call 0xfe411008