RSP: 002b:00007ff7d286d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007ff7d1b9c120 RCX: 00007ff7d1a7cae9 RDX: 0000000000000c41 RSI: 0000000020002000 RDI: ffffffffffffff9c RBP: 00007ff7d286d120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000006e R14: 00007ff7d1b9c120 R15: 00007ffeb7b908d8 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: 371 Comm: syz-executor.0 Not tainted 6.1.90-syzkaller-1151329-gd6a513a78492 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:989 [inline] RIP: 0010:fuse_file_put+0x11b/0x2580 fs/fuse/file.c:119 Code: f0 41 0f c1 5e 28 bf 01 00 00 00 89 de e8 5d 61 5e 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 97 69 a5 ff 4c 8d bc 24 c0 00 00 00 RSP: 0018:ffffc90001526e80 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 0000000000000001 RCX: dffffc0000000000 RDX: ffff88810e005100 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90001527220 R08: ffffffff821742b3 R09: ffffed102203a886 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 0000000000000028 R14: ffff8881101d4400 R15: ffff8881101d4428 FS: 00007ff7d286d6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff7d288dfa8 CR3: 000000012452b000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: fuse_sync_release+0x81/0xb0 fs/fuse/file.c:400 fuse_create_open+0x1d3f/0x37b0 fs/fuse/dir.c:829 fuse_atomic_open+0x22e/0x3a0 fs/fuse/dir.c:891 atomic_open fs/namei.c:3346 [inline] lookup_open fs/namei.c:3454 [inline] open_last_lookups fs/namei.c:3551 [inline] path_openat+0xf52/0x2d60 fs/namei.c:3781 do_filp_open+0x230/0x480 fs/namei.c:3811 do_sys_openat2+0x151/0x890 fs/open.c:1341 do_sys_open fs/open.c:1357 [inline] __do_sys_openat fs/open.c:1373 [inline] __se_sys_openat fs/open.c:1368 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1368 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7ff7d1a7cae9 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:00007ff7d286d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007ff7d1b9c120 RCX: 00007ff7d1a7cae9 RDX: 0000000000000c41 RSI: 0000000020002000 RDI: ffffffffffffff9c RBP: 00007ff7d286d120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000006e R14: 00007ff7d1b9c120 R15: 00007ffeb7b908d8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:989 [inline] RIP: 0010:fuse_file_put+0x11b/0x2580 fs/fuse/file.c:119 Code: f0 41 0f c1 5e 28 bf 01 00 00 00 89 de e8 5d 61 5e 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 97 69 a5 ff 4c 8d bc 24 c0 00 00 00 RSP: 0018:ffffc90001526e80 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 0000000000000001 RCX: dffffc0000000000 RDX: ffff88810e005100 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90001527220 R08: ffffffff821742b3 R09: ffffed102203a886 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 0000000000000028 R14: ffff8881101d4400 R15: ffff8881101d4428 FS: 00007ff7d286d6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff7d286cfa8 CR3: 000000012452b000 CR4: 00000000003506a0 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 5d 61 5e ff call 0xff5e616f 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 97 69 a5 ff call 0xffa569cf 38: 4c 8d bc 24 c0 00 00 lea 0xc0(%rsp),%r15 3f: 00