RAX: ffffffffffffffda RBX: 00007f8d7d03a3f8 RCX: 00007f8d7cfb3819
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007f8d7d03a3f0 R08: 00007f8d7cf4afa6 R09: 0000000000003431
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8d7d007344
R13: 00007f8d7cf4b210 R14: 0000000000000002 R15: 0000200000000180
</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: 306 Comm: syz-executor287 Not tainted 5.15.180-syzkaller-android13-5.15.180_r00 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:965 [inline]
RIP: 0010:fuse_file_put+0x10d/0x1560 fs/fuse/file.c:121
Code: 7c 24 28 bf 01 00 00 00 44 89 fe e8 1d 73 71 ff 41 83 ff 01 0f 85 da 00 00 00 48 8b 44 24 10 4c 8d 78 28 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 e4 dc af ff 4c 8d b4 24 80 00 00
RSP: 0018:ffffc900009a6fe0 EFLAGS: 00010206
RAX: 0000000000000005 RBX: 1ffff92000134e08 RCX: ffff88810d334f00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc900009a7340 R08: dffffc0000000000 R09: ffffed10237fa546
R10: ffffed10237fa546 R11: 1ffff110237fa545 R12: ffff88811bfd2a00
R13: dffffc0000000000 R14: ffff88811bfd2a28 R15: 0000000000000028
FS: 00007f8d7cf4b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000a000 CR3: 000000012301a000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
fuse_sync_release+0x84/0xb0 fs/fuse/file.c:401
fuse_create_open fs/fuse/dir.c:822 [inline]
fuse_atomic_open+0x19de/0x2140 fs/fuse/dir.c:884
atomic_open fs/namei.c:3325 [inline]
lookup_open fs/namei.c:3433 [inline]
open_last_lookups fs/namei.c:3532 [inline]
path_openat+0xe31/0x2f10 fs/namei.c:3739
do_filp_open+0x1b3/0x3e0 fs/namei.c:3769
do_sys_openat2+0x14c/0x7b0 fs/open.c:1234
do_sys_open fs/open.c:1250 [inline]
__do_sys_creat fs/open.c:1326 [inline]
__se_sys_creat fs/open.c:1320 [inline]
__x64_sys_creat+0x8e/0xb0 fs/open.c:1320
x64_sys_call+0x94a/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:86
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f8d7cfb3819
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 31 1b 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:00007f8d7cf4b208 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f8d7d03a3f8 RCX: 00007f8d7cfb3819
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007f8d7d03a3f0 R08: 00007f8d7cf4afa6 R09: 0000000000003431
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8d7d007344
R13: 00007f8d7cf4b210 R14: 0000000000000002 R15: 0000200000000180
</TASK>
Modules linked in:
---[ end trace a8c0bc1d2f7f24c8 ]---
RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:965 [inline]
RIP: 0010:fuse_file_put+0x10d/0x1560 fs/fuse/file.c:121
Code: 7c 24 28 bf 01 00 00 00 44 89 fe e8 1d 73 71 ff 41 83 ff 01 0f 85 da 00 00 00 48 8b 44 24 10 4c 8d 78 28 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 e4 dc af ff 4c 8d b4 24 80 00 00
RSP: 0018:ffffc900009a6fe0 EFLAGS: 00010206
RAX: 0000000000000005 RBX: 1ffff92000134e08 RCX: ffff88810d334f00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc900009a7340 R08: dffffc0000000000 R09: ffffed10237fa546
R10: ffffed10237fa546 R11: 1ffff110237fa545 R12: ffff88811bfd2a00
R13: dffffc0000000000 R14: ffff88811bfd2a28 R15: 0000000000000028
FS: 00007f8d7cf4b6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8d7d002638 CR3: 000000012301a000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 7c 24 jl 0x26
2: 28 bf 01 00 00 00 sub %bh,0x1(%rdi)
8: 44 89 fe mov %r15d,%esi
b: e8 1d 73 71 ff call 0xff71732d
10: 41 83 ff 01 cmp $0x1,%r15d
14: 0f 85 da 00 00 00 jne 0xf4
1a: 48 8b 44 24 10 mov 0x10(%rsp),%rax
1f: 4c 8d 78 28 lea 0x28(%rax),%r15
23: 4c 89 f8 mov %r15,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 ff mov %r15,%rdi
34: e8 e4 dc af ff call 0xffafdd1d
39: 4c rex.WR
3a: 8d .byte 0x8d
3b: b4 24 mov $0x24,%ah
3d: 80 00 00 addb $0x0,(%rax)