rust_binder: 15947: priority -30 not allowed, using 91 instead Oops: general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f] CPU: 1 UID: 0 PID: 15953 Comm: syz.1.5034 Not tainted syzkaller #0 687dd8cc987f259803714ab19d9ffd663b1e6878 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:d_really_is_positive include/linux/dcache.h:514 [inline] RIP: 0010:fuse_atomic_open+0x1b6/0x440 fs/fuse/dir.c:962 Code: 8b 6d bc 44 89 ee 83 e6 40 31 ff e8 14 4d 4b ff 44 89 e8 83 e0 40 75 07 e8 c7 48 4b ff eb 25 4d 8d 6e 30 4c 89 e8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ef e8 fc 98 a1 ff 49 83 7d 00 00 74 26 e8 RSP: 0018:ffffc900012f7990 EFLAGS: 00010206 RAX: 0000000000000009 RBX: dffffc0000000000 RCX: 0000000000000002 RDX: ffff888149bccc00 RSI: 0000000000000040 RDI: 0000000000000000 RBP: ffffc900012f79f0 R08: ffff888149bccc00 R09: 0000000000000002 R10: 00000000fffffffe R11: 0000000000000002 R12: ffff88811b89e000 R13: 0000000000000049 R14: 0000000000000019 R15: ffff88811bf87180 FS: 00007fd8328386c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000004a030 CR3: 0000000149366000 CR4: 00000000003526b0 Call Trace: atomic_open fs/namei.c:3455 [inline] lookup_open fs/namei.c:3566 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x115b/0x34b0 fs/namei.c:3930 do_filp_open+0x1c6/0x3e0 fs/namei.c:3960 do_sys_openat2+0x12c/0x1c0 fs/open.c:1438 do_sys_open fs/open.c:1453 [inline] __do_sys_creat fs/open.c:1531 [inline] __se_sys_creat fs/open.c:1525 [inline] __x64_sys_creat+0x92/0xc0 fs/open.c:1525 x64_sys_call+0x2710/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:86 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fd83198eec9 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:00007fd832838038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fd831be6090 RCX: 00007fd83198eec9 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000200000000080 RBP: 00007fd831a11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd831be6128 R14: 00007fd831be6090 R15: 00007ffe725d6b28 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:d_really_is_positive include/linux/dcache.h:514 [inline] RIP: 0010:fuse_atomic_open+0x1b6/0x440 fs/fuse/dir.c:962 Code: 8b 6d bc 44 89 ee 83 e6 40 31 ff e8 14 4d 4b ff 44 89 e8 83 e0 40 75 07 e8 c7 48 4b ff eb 25 4d 8d 6e 30 4c 89 e8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ef e8 fc 98 a1 ff 49 83 7d 00 00 74 26 e8 RSP: 0018:ffffc900012f7990 EFLAGS: 00010206 RAX: 0000000000000009 RBX: dffffc0000000000 RCX: 0000000000000002 RDX: ffff888149bccc00 RSI: 0000000000000040 RDI: 0000000000000000 RBP: ffffc900012f79f0 R08: ffff888149bccc00 R09: 0000000000000002 R10: 00000000fffffffe R11: 0000000000000002 R12: ffff88811b89e000 R13: 0000000000000049 R14: 0000000000000019 R15: ffff88811bf87180 FS: 00007fd8328386c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000004a030 CR3: 0000000149366000 CR4: 00000000003526b0 ---------------- Code disassembly (best guess): 0: 8b 6d bc mov -0x44(%rbp),%ebp 3: 44 89 ee mov %r13d,%esi 6: 83 e6 40 and $0x40,%esi 9: 31 ff xor %edi,%edi b: e8 14 4d 4b ff call 0xff4b4d24 10: 44 89 e8 mov %r13d,%eax 13: 83 e0 40 and $0x40,%eax 16: 75 07 jne 0x1f 18: e8 c7 48 4b ff call 0xff4b48e4 1d: eb 25 jmp 0x44 1f: 4d 8d 6e 30 lea 0x30(%r14),%r13 23: 4c 89 e8 mov %r13,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 4c 89 ef mov %r13,%rdi 33: e8 fc 98 a1 ff call 0xffa19934 38: 49 83 7d 00 00 cmpq $0x0,0x0(%r13) 3d: 74 26 je 0x65 3f: e8 .byte 0xe8