RAX: ffffffffffffffda RBX: 00007fee38389120 RCX: 00007fee38269ae9 RDX: 0000000000000c41 RSI: 0000000020002000 RDI: ffffffffffffff9c RBP: 00007fee37daa120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000006e R14: 00007fee38389120 R15: 00007fffa8cd88a8 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: 356 Comm: syz-executor.0 Not tainted 5.15.189-syzkaller-1081280-gf32b52534f1d #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: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 1d 53 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 24 ca af ff 4c 8d b4 24 80 00 00 RSP: 0018:ffffc90000df6fe0 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 1ffff920001bee08 RCX: ffff88810d8b2780 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000df7340 R08: dffffc0000000000 R09: ffffed1021a0d746 R10: ffffed1021a0d746 R11: 1ffff11021a0d745 R12: ffff88810d06ba00 R13: dffffc0000000000 R14: ffff88810d06ba28 R15: 0000000000000028 FS: 00007fee37daa6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fee37da9fa8 CR3: 0000000120e68000 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_openat fs/open.c:1266 [inline] __se_sys_openat fs/open.c:1261 [inline] __x64_sys_openat+0x136/0x160 fs/open.c:1261 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: 0033:0x7fee38269ae9 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:00007fee37daa0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fee38389120 RCX: 00007fee38269ae9 RDX: 0000000000000c41 RSI: 0000000020002000 RDI: ffffffffffffff9c RBP: 00007fee37daa120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000006e R14: 00007fee38389120 R15: 00007fffa8cd88a8 Modules linked in: ---[ end trace 5d3dcfa4d3b7c5b5 ]--- 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 1d 53 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 24 ca af ff 4c 8d b4 24 80 00 00 RSP: 0018:ffffc90000df6fe0 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 1ffff920001bee08 RCX: ffff88810d8b2780 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000df7340 R08: dffffc0000000000 R09: ffffed1021a0d746 R10: ffffed1021a0d746 R11: 1ffff11021a0d745 R12: ffff88810d06ba00 R13: dffffc0000000000 R14: ffff88810d06ba28 R15: 0000000000000028 FS: 00007fee37daa6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fee37dcafa8 CR3: 0000000120e68000 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 1d 53 71 ff call 0xff71532d 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 24 ca af ff call 0xffafca5d 39: 4c rex.WR 3a: 8d .byte 0x8d 3b: b4 24 mov $0x24,%ah 3d: 80 00 00 addb $0x0,(%rax)