Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc56c092028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007fc56b416090 RCX: 00007fc56b19c799
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007fc56c092090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fc56b416128 R14: 00007fc56b416090 R15: 00007ffe31b7a1c8
</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: 382 Comm: syz.2.19 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:992 [inline]
RIP: 0010:fuse_file_put+0x14d/0x1820 fs/fuse/file.c:119
Code: 00 00 00 44 89 ee e8 d2 83 65 ff 41 83 fd 01 0f 85 44 01 00 00 4c 89 74 24 18 48 8b 44 24 48 4c 8d 68 28 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 4c 89 f9 74 12 4c 89 ef e8 01 b2 aa ff 48 b9 00 00
RSP: 0018:ffffc90001746f20 EFLAGS: 00010206
RAX: 0000000000000005 RBX: fffff520002e8df4 RCX: 0000000000000000
RDX: ffff88811658e540 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc900017472a0 R08: ffff888114a94a2b R09: 1ffff11022952945
R10: dffffc0000000000 R11: ffffed1022952946 R12: ffff888114a94a28
R13: 0000000000000028 R14: ffff888114a94a00 R15: dffffc0000000000
FS: 00007fc56c0926c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc56c091ff8 CR3: 00000001159b5000 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:400
fuse_create_open+0x1475/0x2260 fs/fuse/dir.c:848
fuse_atomic_open+0x245/0x3c0 fs/fuse/dir.c:910
atomic_open fs/namei.c:3352 [inline]
lookup_open fs/namei.c:3460 [inline]
open_last_lookups fs/namei.c:3557 [inline]
path_openat+0xe57/0x2f80 fs/namei.c:3787
do_filp_open+0x1f1/0x430 fs/namei.c:3817
do_sys_openat2+0x15e/0x810 fs/open.c:1343
do_sys_open fs/open.c:1359 [inline]
__do_sys_creat fs/open.c:1437 [inline]
__se_sys_creat fs/open.c:1431 [inline]
__x64_sys_creat+0x8e/0xb0 fs/open.c:1431
x64_sys_call+0x116/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:86
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc56b19c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc56c092028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007fc56b416090 RCX: 00007fc56b19c799
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007fc56c092090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fc56b416128 R14: 00007fc56b416090 R15: 00007ffe31b7a1c8
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:992 [inline]
RIP: 0010:fuse_file_put+0x14d/0x1820 fs/fuse/file.c:119
Code: 00 00 00 44 89 ee e8 d2 83 65 ff 41 83 fd 01 0f 85 44 01 00 00 4c 89 74 24 18 48 8b 44 24 48 4c 8d 68 28 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 4c 89 f9 74 12 4c 89 ef e8 01 b2 aa ff 48 b9 00 00
RSP: 0018:ffffc90001746f20 EFLAGS: 00010206
RAX: 0000000000000005 RBX: fffff520002e8df4 RCX: 0000000000000000
RDX: ffff88811658e540 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc900017472a0 R08: ffff888114a94a2b R09: 1ffff11022952945
R10: dffffc0000000000 R11: ffffed1022952946 R12: ffff888114a94a28
R13: 0000000000000028 R14: ffff888114a94a00 R15: dffffc0000000000
FS: 00007fc56c0926c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc56c091ff8 CR3: 00000001159b5000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: ff c3 inc %ebx
2: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
9: 00 00 00
c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
11: 48 89 f8 mov %rdi,%rax
14: 48 89 f7 mov %rsi,%rdi
17: 48 89 d6 mov %rdx,%rsi
1a: 48 89 ca mov %rcx,%rdx
1d: 4d 89 c2 mov %r8,%r10
20: 4d 89 c8 mov %r9,%r8
23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9
28: 0f 05 syscall
* 2a: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction
30: 73 01 jae 0x33
32: c3 ret
33: 48 c7 c1 e8 ff ff ff mov $0xffffffffffffffe8,%rcx
3a: f7 d8 neg %eax
3c: 64 89 01 mov %eax,%fs:(%rcx)
3f: 48 rex.W