Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f80860b1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f8086889080 RCX: 00007f8086661929 RDX: 0000000000050043 RSI: 0000200000000100 RDI: ffffffffffffff9c RBP: 00007f80860b1090 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000001ff R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 00007f8086889080 R15: 00007ffd6ce246e8 general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] CPU: 0 PID: 469 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:933 [inline] RIP: 0010:fuse_file_put+0x11a/0x1470 fs/fuse/file.c:125 Code: 7c 24 28 bf 01 00 00 00 44 89 fe e8 20 36 77 ff 41 83 ff 01 0f 85 df 00 00 00 48 8b 44 24 28 4c 8d 78 28 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 07 22 b1 ff 4c 8d b4 24 a0 00 00 RSP: 0018:ffffc90000d67000 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 1ffff920001ace10 RCX: 0000000000000000 RDX: ffff888116eca780 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000d67380 R08: dffffc0000000000 R09: ffffed1022b0b886 R10: ffffed1022b0b886 R11: 1ffff11022b0b885 R12: ffff88811585c400 R13: dffffc0000000000 R14: ffff88811585c428 R15: 0000000000000028 FS: 00007f80860b16c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000000b000 CR3: 00000001144e1000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: fuse_sync_release+0x84/0xb0 fs/fuse/file.c:393 fuse_create_open fs/fuse/dir.c:801 [inline] fuse_atomic_open+0x17b8/0x1df0 fs/fuse/dir.c:862 atomic_open fs/namei.c:3114 [inline] lookup_open fs/namei.c:3219 [inline] open_last_lookups fs/namei.c:3317 [inline] path_openat+0xf80/0x3160 fs/namei.c:3506 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217 do_sys_open fs/open.c:1233 [inline] __do_sys_openat fs/open.c:1249 [inline] __se_sys_openat fs/open.c:1244 [inline] __x64_sys_openat+0x136/0x160 fs/open.c:1244 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f8086661929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f80860b1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f8086889080 RCX: 00007f8086661929 RDX: 0000000000050043 RSI: 0000200000000100 RDI: ffffffffffffff9c RBP: 00007f80860b1090 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000001ff R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 00007f8086889080 R15: 00007ffd6ce246e8 Modules linked in: ---[ end trace 98b06d6d90bd1f8e ]--- RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:933 [inline] RIP: 0010:fuse_file_put+0x11a/0x1470 fs/fuse/file.c:125 Code: 7c 24 28 bf 01 00 00 00 44 89 fe e8 20 36 77 ff 41 83 ff 01 0f 85 df 00 00 00 48 8b 44 24 28 4c 8d 78 28 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 07 22 b1 ff 4c 8d b4 24 a0 00 00 RSP: 0018:ffffc90000d67000 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 1ffff920001ace10 RCX: 0000000000000000 RDX: ffff888116eca780 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000d67380 R08: dffffc0000000000 R09: ffffed1022b0b886 R10: ffffed1022b0b886 R11: 1ffff11022b0b885 R12: ffff88811585c400 R13: dffffc0000000000 R14: ffff88811585c428 R15: 0000000000000028 FS: 00007f80860b16c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000006000 CR3: 00000001144e1000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 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 40 00 nopl 0x0(%rax) 10: 48 89 f8 mov %rdi,%rax 13: 48 89 f7 mov %rsi,%rdi 16: 48 89 d6 mov %rdx,%rsi 19: 48 89 ca mov %rcx,%rdx 1c: 4d 89 c2 mov %r8,%r10 1f: 4d 89 c8 mov %r9,%r8 22: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 27: 0f 05 syscall * 29: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 2f: 73 01 jae 0x32 31: c3 ret 32: 48 c7 c1 a8 ff ff ff mov $0xffffffffffffffa8,%rcx 39: f7 d8 neg %eax 3b: 64 89 01 mov %eax,%fs:(%rcx) 3e: 48 rex.W