[Android 5.15] general protection fault in fuse_file_put

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: ea586874d2f9 Merge 5.15.131 into android13-5.15-lts
git tree: android13-5.15-lts
console+strace: https://syzkaller.appspot.com/x/log.txt?x=15ff6028680000
kernel config: https://syzkaller.appspot.com/x/.config?x=8c01766ad16ac177
dashboard link: https://syzkaller.appspot.com/bug?extid=06653aa43e21cf262ef9
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12d36180680000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12de6ce8680000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/e84dfa4dc7ef/disk-ea586874.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b16cac25a266/vmlinux-ea586874.xz
kernel image: https://storage.googleapis.com/syzbot-assets/8aee32c39a67/bzImage-ea586874.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+06653a...@syzkaller.appspotmail.com

RBP: 00007fd75c3fc400 R08: 00007fd75c2ebfa6 R09: 0000000000003331
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd75c3c922c
R13: 00007fd75c2ec210 R14: 0000000000000002 R15: 2f30656c69662f2e
</TASK>
general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
CPU: 1 PID: 313 Comm: syz-executor332 Not tainted 5.15.131-syzkaller-00653-gea586874d2f9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:950 [inline]
RIP: 0010:fuse_file_put+0x11d/0x2420 fs/fuse/file.c:119
Code: 01 00 00 00 89 de e8 e2 5b 66 ff 83 fb 01 0f 85 ee 00 00 00 4d 8d 6c 24 28 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 ef e8 a5 43 a8 ff 4c 8d bc 24 c0 00 00 00
RSP: 0018:ffffc90000956ea0 EFLAGS: 00010206
RAX: 0000000000000005 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: ffff88811dd42780 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc90000957240 R08: ffffffff82099d4e R09: ffffed1023571e46
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000028 R14: ffff88811ab8f200 R15: ffff88811ab8f228
FS: 00007fd75c2ec6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd75c3c4638 CR3: 000000011db85000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
fuse_sync_release+0x81/0xb0 fs/fuse/file.c:399
fuse_create_open fs/fuse/dir.c:817 [inline]
fuse_atomic_open+0x2a5c/0x3750 fs/fuse/dir.c:879
atomic_open fs/namei.c:3255 [inline]
lookup_open fs/namei.c:3363 [inline]
open_last_lookups fs/namei.c:3462 [inline]
path_openat+0xfde/0x2f40 fs/namei.c:3669
do_filp_open+0x21c/0x460 fs/namei.c:3699
do_sys_openat2+0x13f/0x830 fs/open.c:1234
do_sys_open fs/open.c:1250 [inline]
__do_sys_openat fs/open.c:1266 [inline]
__se_sys_openat fs/open.c:1261 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1261
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fd75c36dfa9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd75c2ec208 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fd75c3fc408 RCX: 00007fd75c36dfa9
RDX: 0000000000000c41 RSI: 0000000020002000 RDI: ffffffffffffff9c
RBP: 00007fd75c3fc400 R08: 00007fd75c2ebfa6 R09: 0000000000003331
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd75c3c922c
R13: 00007fd75c2ec210 R14: 0000000000000002 R15: 2f30656c69662f2e
</TASK>
Modules linked in:
---[ end trace 397894a245fe9706 ]---
RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:950 [inline]
RIP: 0010:fuse_file_put+0x11d/0x2420 fs/fuse/file.c:119
Code: 01 00 00 00 89 de e8 e2 5b 66 ff 83 fb 01 0f 85 ee 00 00 00 4d 8d 6c 24 28 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 ef e8 a5 43 a8 ff 4c 8d bc 24 c0 00 00 00
RSP: 0018:ffffc90000956ea0 EFLAGS: 00010206
RAX: 0000000000000005 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: ffff88811dd42780 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc90000957240 R08: ffffffff82099d4e R09: ffffed1023571e46
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000028 R14: ffff88811ab8f200 R15: ffff88811ab8f228
FS: 00007fd75c2ec6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd75c3c4638 CR3: 000000011db85000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 01 00 add %eax,(%rax)
2: 00 00 add %al,(%rax)
4: 89 de mov %ebx,%esi
6: e8 e2 5b 66 ff call 0xff665bed
b: 83 fb 01 cmp $0x1,%ebx
e: 0f 85 ee 00 00 00 jne 0x102
14: 4d 8d 6c 24 28 lea 0x28(%r12),%r13
19: 4c 89 e8 mov %r13,%rax
1c: 48 c1 e8 03 shr $0x3,%rax
20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
27: fc ff df
* 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 4c 89 ef mov %r13,%rdi
33: e8 a5 43 a8 ff call 0xffa843dd
38: 4c 8d bc 24 c0 00 00 lea 0xc0(%rsp),%r15
3f: 00


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