RAX: ffffffffffffffda RBX: 00007f414d99c120 RCX: 00007f414d87cae9 RDX: 0000000000000c41 RSI: 0000000020002000 RDI: ffffffffffffff9c RBP: 00007f414e541120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000006e R14: 00007f414d99c120 R15: 00007ffe4eb6d928 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: 360 Comm: syz-executor.0 Not tainted 6.1.145-syzkaller-1169991-g831a57b4a783 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:992 [inline] RIP: 0010:fuse_file_put+0x10d/0x1560 fs/fuse/file.c:119 Code: 7c 24 28 bf 01 00 00 00 44 89 fe e8 cd b9 67 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 d4 18 ac ff 4c 8d b4 24 80 00 00 RSP: 0018:ffffc90001536f80 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 1ffff920002a6dfc RCX: 0000000000000000 RDX: ffff88810d7c5100 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc900015372e0 R08: dffffc0000000000 R09: ffffed1021d943c6 R10: ffffed1021d943c6 R11: 1ffff11021d943c5 R12: ffff88810eca1e00 R13: dffffc0000000000 R14: ffff88810eca1e28 R15: 0000000000000028 FS: 00007f414e5416c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f414e540fa8 CR3: 000000010890f000 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+0x119f/0x1e10 fs/fuse/dir.c:848 fuse_atomic_open+0x245/0x3c0 fs/fuse/dir.c:910 atomic_open fs/namei.c:3344 [inline] lookup_open fs/namei.c:3452 [inline] open_last_lookups fs/namei.c:3549 [inline] path_openat+0xe44/0x2f50 fs/namei.c:3779 do_filp_open+0x1c1/0x3c0 fs/namei.c:3809 do_sys_openat2+0x185/0x7e0 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+0x136/0x160 fs/open.c:1368 x64_sys_call+0x783/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f414d87cae9 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:00007f414e5410c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f414d99c120 RCX: 00007f414d87cae9 RDX: 0000000000000c41 RSI: 0000000020002000 RDI: ffffffffffffff9c RBP: 00007f414e541120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000006e R14: 00007f414d99c120 R15: 00007ffe4eb6d928 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:992 [inline] RIP: 0010:fuse_file_put+0x10d/0x1560 fs/fuse/file.c:119 Code: 7c 24 28 bf 01 00 00 00 44 89 fe e8 cd b9 67 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 d4 18 ac ff 4c 8d b4 24 80 00 00 RSP: 0018:ffffc90001536f80 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 1ffff920002a6dfc RCX: 0000000000000000 RDX: ffff88810d7c5100 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc900015372e0 R08: dffffc0000000000 R09: ffffed1021d943c6 R10: ffffed1021d943c6 R11: 1ffff11021d943c5 R12: ffff88810eca1e00 R13: dffffc0000000000 R14: ffff88810eca1e28 R15: 0000000000000028 FS: 00007f414e5416c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f414e561fa8 CR3: 000000010890f000 CR4: 00000000003506b0 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 cd b9 67 ff call 0xff67b9dd 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 d4 18 ac ff call 0xffac190d 39: 4c rex.WR 3a: 8d .byte 0x8d 3b: b4 24 mov $0x24,%ah 3d: 80 00 00 addb $0x0,(%rax)