RBP: 00007f2dd6160090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 00007f2dd6938080 R15: 00007ffc21906278 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: 451 Comm: syz.2.17 Not tainted 5.15.182-syzkaller-1080481-g57725b368731 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:965 [inline] RIP: 0010:fuse_file_put+0x10d/0x1560 fs/fuse/file.c:121 Code: 7c 24 28 bf 01 00 00 00 44 89 fe e8 9d 65 71 ff 41 83 ff 01 0f 85 da 00 00 00 48 8b 44 24 10 4c 8d 78 28 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 f4 d2 af ff 4c 8d b4 24 80 00 00 RSP: 0018:ffffc90000a26fe0 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 1ffff92000144e08 RCX: ffff888115df62c0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000a27340 R08: dffffc0000000000 R09: ffffed10236d4106 R10: ffffed10236d4106 R11: 1ffff110236d4105 R12: ffff88811b6a0800 R13: dffffc0000000000 R14: ffff88811b6a0828 R15: 0000000000000028 FS: 00007f2dd61606c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000008fe0 CR3: 0000000118326000 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:401 fuse_create_open fs/fuse/dir.c:822 [inline] fuse_atomic_open+0x19de/0x2140 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+0xe31/0x2f10 fs/namei.c:3739 do_filp_open+0x1b3/0x3e0 fs/namei.c:3769 do_sys_openat2+0x14c/0x7b0 fs/open.c:1234 do_sys_open fs/open.c:1250 [inline] __do_sys_creat fs/open.c:1326 [inline] __se_sys_creat fs/open.c:1320 [inline] __x64_sys_creat+0x8e/0xb0 fs/open.c:1320 x64_sys_call+0x94a/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:86 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: 0033:0x7f2dd6710969 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:00007f2dd6160038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f2dd6938080 RCX: 00007f2dd6710969 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000180 RBP: 00007f2dd6160090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 00007f2dd6938080 R15: 00007ffc21906278 Modules linked in: ---[ end trace 229b80c31a7a95cd ]--- RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:965 [inline] RIP: 0010:fuse_file_put+0x10d/0x1560 fs/fuse/file.c:121 Code: 7c 24 28 bf 01 00 00 00 44 89 fe e8 9d 65 71 ff 41 83 ff 01 0f 85 da 00 00 00 48 8b 44 24 10 4c 8d 78 28 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 f4 d2 af ff 4c 8d b4 24 80 00 00 RSP: 0018:ffffc90000a26fe0 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 1ffff92000144e08 RCX: ffff888115df62c0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000a27340 R08: dffffc0000000000 R09: ffffed10236d4106 R10: ffffed10236d4106 R11: 1ffff110236d4105 R12: ffff88811b6a0800 R13: dffffc0000000000 R14: ffff88811b6a0828 R15: 0000000000000028 FS: 00007f2dd61606c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000008fe0 CR3: 0000000118326000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 7c 24 jl 0x26 2: 28 bf 01 00 00 00 sub %bh,0x1(%rdi) 8: 44 89 fe mov %r15d,%esi b: e8 9d 65 71 ff call 0xff7165ad 10: 41 83 ff 01 cmp $0x1,%r15d 14: 0f 85 da 00 00 00 jne 0xf4 1a: 48 8b 44 24 10 mov 0x10(%rsp),%rax 1f: 4c 8d 78 28 lea 0x28(%rax),%r15 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ff mov %r15,%rdi 34: e8 f4 d2 af ff call 0xffafd32d 39: 4c rex.WR 3a: 8d .byte 0x8d 3b: b4 24 mov $0x24,%ah 3d: 80 00 00 addb $0x0,(%rax)