RSP: 002b:00007fcb8aa420c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fcb8b021120 RCX: 00007fcb8af01ae9 RDX: 0000000000000c41 RSI: 0000000020002000 RDI: ffffffffffffff9c RBP: 00007fcb8aa42120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000006e R14: 00007fcb8b021120 R15: 00007fff9c1a68b8 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: 369 Comm: syz-executor.0 Not tainted 5.15.167-syzkaller-1075712-g5e4635681cf1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:965 [inline] RIP: 0010:fuse_file_put+0x11b/0x2580 fs/fuse/file.c:121 Code: f0 41 0f c1 5e 28 bf 01 00 00 00 89 de e8 9d 5d 65 ff 83 fb 01 0f 85 e4 00 00 00 4c 89 e9 4d 8d 6c 24 28 4c 89 e8 48 c1 e8 03 <80> 3c 08 00 74 08 4c 89 ef e8 a7 ab a7 ff 4c 8d bc 24 c0 00 00 00 RSP: 0018:ffffc90000b46ea0 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 0000000000000001 RCX: dffffc0000000000 RDX: ffff88810c432780 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000b47240 R08: ffffffff820afd93 R09: ffffed10217d7f06 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 0000000000000028 R14: ffff88810bebf800 R15: ffff88810bebf828 FS: 00007fcb8aa426c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcb8aa41fa8 CR3: 000000010cca0000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: fuse_sync_release+0x81/0xb0 fs/fuse/file.c:401 fuse_create_open fs/fuse/dir.c:822 [inline] fuse_atomic_open+0x2c86/0x3a90 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+0xfde/0x2f40 fs/namei.c:3739 do_filp_open+0x21c/0x460 fs/namei.c:3769 do_sys_openat2+0x13f/0x820 fs/open.c:1234 do_sys_open fs/open.c:1250 [inline] __do_sys_openat fs/open.c:1266 [inline] __se_sys_openat fs/open.c:1261 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1261 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fcb8af01ae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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:00007fcb8aa420c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fcb8b021120 RCX: 00007fcb8af01ae9 RDX: 0000000000000c41 RSI: 0000000020002000 RDI: ffffffffffffff9c RBP: 00007fcb8aa42120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000006e R14: 00007fcb8b021120 R15: 00007fff9c1a68b8 Modules linked in: ---[ end trace 367ac7bf5973a1c3 ]--- RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:965 [inline] RIP: 0010:fuse_file_put+0x11b/0x2580 fs/fuse/file.c:121 Code: f0 41 0f c1 5e 28 bf 01 00 00 00 89 de e8 9d 5d 65 ff 83 fb 01 0f 85 e4 00 00 00 4c 89 e9 4d 8d 6c 24 28 4c 89 e8 48 c1 e8 03 <80> 3c 08 00 74 08 4c 89 ef e8 a7 ab a7 ff 4c 8d bc 24 c0 00 00 00 RSP: 0018:ffffc90000b46ea0 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 0000000000000001 RCX: dffffc0000000000 RDX: ffff88810c432780 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000b47240 R08: ffffffff820afd93 R09: ffffed10217d7f06 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 0000000000000028 R14: ffff88810bebf800 R15: ffff88810bebf828 FS: 00007fcb8aa426c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcb8aa62fa8 CR3: 000000010cca0000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: f0 41 0f c1 5e 28 lock xadd %ebx,0x28(%r14) 6: bf 01 00 00 00 mov $0x1,%edi b: 89 de mov %ebx,%esi d: e8 9d 5d 65 ff call 0xff655daf 12: 83 fb 01 cmp $0x1,%ebx 15: 0f 85 e4 00 00 00 jne 0xff 1b: 4c 89 e9 mov %r13,%rcx 1e: 4d 8d 6c 24 28 lea 0x28(%r12),%r13 23: 4c 89 e8 mov %r13,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 4c 89 ef mov %r13,%rdi 33: e8 a7 ab a7 ff call 0xffa7abdf 38: 4c 8d bc 24 c0 00 00 lea 0xc0(%rsp),%r15 3f: 00