RBP: 00007fa6eee35090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fa6ee216128 R14: 00007fa6ee216090 R15: 00007ffe68aa8ed8 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: 4903 Comm: syz.7.1359 Tainted: G W 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:ffffc9000d106f20 EFLAGS: 00010206 RAX: 0000000000000005 RBX: fffff52001a20df4 RCX: 0000000000000000 RDX: ffff88811ee46540 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc9000d1072a0 R08: ffff88813aa2c42b R09: 1ffff11027545885 R10: dffffc0000000000 R11: ffffed1027545886 R12: ffff88813aa2c428 R13: 0000000000000028 R14: ffff88813aa2c400 R15: dffffc0000000000 FS: 00007fa6eee356c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b34622ff8 CR3: 0000000138a6b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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: 0033:0x7fa6edf9c799 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:00007fa6eee35028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fa6ee216090 RCX: 00007fa6edf9c799 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000180 RBP: 00007fa6eee35090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fa6ee216128 R14: 00007fa6ee216090 R15: 00007ffe68aa8ed8 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:ffffc9000d106f20 EFLAGS: 00010206 RAX: 0000000000000005 RBX: fffff52001a20df4 RCX: 0000000000000000 RDX: ffff88811ee46540 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc9000d1072a0 R08: ffff88813aa2c42b R09: 1ffff11027545885 R10: dffffc0000000000 R11: ffffed1027545886 R12: ffff88813aa2c428 R13: 0000000000000028 R14: ffff88813aa2c400 R15: dffffc0000000000 FS: 00007fa6eee356c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5eef7e82f8 CR3: 0000000138a6b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 44 89 ee add %al,-0x12(%rcx,%rcx,4) 6: e8 d2 83 65 ff call 0xff6583dd b: 41 83 fd 01 cmp $0x1,%r13d f: 0f 85 44 01 00 00 jne 0x159 15: 4c 89 74 24 18 mov %r14,0x18(%rsp) 1a: 48 8b 44 24 48 mov 0x48(%rsp),%rax 1f: 4c 8d 68 28 lea 0x28(%rax),%r13 23: 4c 89 e8 mov %r13,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 4c 89 f9 mov %r15,%rcx 32: 74 12 je 0x46 34: 4c 89 ef mov %r13,%rdi 37: e8 01 b2 aa ff call 0xffaab23d 3c: 48 rex.W 3d: b9 .byte 0xb9