RBP: 00007fa41c315090 R08: 0000000000000000 R09: 0000000000000000 R10: 0b3836f6d7a15f29 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fa41c76e218 R14: 00007fa41c76e180 R15: 00007ffe1c533408 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: 379 Comm: syz.2.18 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:965 [inline] RIP: 0010:fuse_file_put+0x13c/0x1860 fs/fuse/file.c:121 Code: c1 6b 28 bf 01 00 00 00 44 89 ee e8 be fd 6e ff 41 83 fd 01 0f 85 4c 01 00 00 48 8b 44 24 28 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 e2 77 ae ff 48 b9 00 00 RSP: 0018:ffffc90002bc6fa0 EFLAGS: 00010206 RAX: 0000000000000005 RBX: ffff888110dd4800 RCX: ffff888110a9bb40 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90002bc7300 R08: ffff888110dd482b R09: 1ffff110221ba905 R10: dffffc0000000000 R11: ffffed10221ba906 R12: ffff888110dd4828 R13: 0000000000000028 R14: fffff52000578e00 R15: dffffc0000000000 FS: 00007fa41c3156c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa41c335ff8 CR3: 000000011200d000 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:401 fuse_create_open fs/fuse/dir.c:822 [inline] fuse_atomic_open+0x1d35/0x2520 fs/fuse/dir.c:884 atomic_open fs/namei.c:3333 [inline] lookup_open fs/namei.c:3441 [inline] open_last_lookups fs/namei.c:3540 [inline] path_openat+0xe31/0x2f20 fs/namei.c:3747 do_filp_open+0x1e2/0x410 fs/namei.c:3777 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236 do_sys_open fs/open.c:1252 [inline] __do_sys_openat fs/open.c:1268 [inline] __se_sys_openat fs/open.c:1263 [inline] __x64_sys_openat+0x136/0x160 fs/open.c:1263 x64_sys_call+0x219/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258 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: 0033:0x7fa41c4f4e59 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:00007fa41c315028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fa41c76e180 RCX: 00007fa41c4f4e59 RDX: 0000000000060a41 RSI: 00002000000013c0 RDI: ffffffffffffff9c RBP: 00007fa41c315090 R08: 0000000000000000 R09: 0000000000000000 R10: 0b3836f6d7a15f29 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fa41c76e218 R14: 00007fa41c76e180 R15: 00007ffe1c533408 Modules linked in: ---[ end trace dfba0fa760c614ca ]--- RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:965 [inline] RIP: 0010:fuse_file_put+0x13c/0x1860 fs/fuse/file.c:121 Code: c1 6b 28 bf 01 00 00 00 44 89 ee e8 be fd 6e ff 41 83 fd 01 0f 85 4c 01 00 00 48 8b 44 24 28 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 e2 77 ae ff 48 b9 00 00 RSP: 0018:ffffc90002bc6fa0 EFLAGS: 00010206 RAX: 0000000000000005 RBX: ffff888110dd4800 RCX: ffff888110a9bb40 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90002bc7300 R08: ffff888110dd482b R09: 1ffff110221ba905 R10: dffffc0000000000 R11: ffffed10221ba906 R12: ffff888110dd4828 R13: 0000000000000028 R14: fffff52000578e00 R15: dffffc0000000000 FS: 00007fa41c3156c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa41c335ff8 CR3: 000000011200d000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c1 6b 28 bf shrl $0xbf,0x28(%rbx) 4: 01 00 add %eax,(%rax) 6: 00 00 add %al,(%rax) 8: 44 89 ee mov %r13d,%esi b: e8 be fd 6e ff call 0xff6efdce 10: 41 83 fd 01 cmp $0x1,%r13d 14: 0f 85 4c 01 00 00 jne 0x166 1a: 48 8b 44 24 28 mov 0x28(%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 e2 77 ae ff call 0xffae781e 3c: 48 rex.W 3d: b9 .byte 0xb9