kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5896 Comm: syz-executor.5 Not tainted 5.4.147-syzkaller-00040-g2138e7367558 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ioctl_permit_fill fs/incfs/pseudo_files.c:153 [inline] RIP: 0010:pending_reads_dispatch_ioctl+0x855/0x29e0 fs/incfs/pseudo_files.c:1026 Code: 41 a4 85 ff 49 c7 c7 f9 ff ff ff 48 8b 5c 24 38 e9 e7 07 00 00 49 8d 5e 28 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 7d c0 b2 ff 48 c7 c0 80 33 dd 84 48 RSP: 0018:ffff8881dcf47cf8 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 0000000000000028 RCX: dffffc0000000000 RDX: ffffc90006576000 RSI: 000000000000001b RDI: 000000000000001c RBP: 0000000000000000 R08: ffffffff8198ec96 R09: ffffed103b9e8fb3 R10: ffffed103b9e8fb3 R11: 0000000000000000 R12: 0000000040046721 R13: ffff8881ea6347a0 R14: 0000000000000000 R15: 1ffff1103d4c68f4 FS: 00007fb8bd0aa700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000a038 CR3: 00000001b4ec3000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_vfs_ioctl+0x6fb/0x15b0 fs/ioctl.c:47 ksys_ioctl fs/ioctl.c:742 [inline] __do_sys_ioctl fs/ioctl.c:749 [inline] __se_sys_ioctl fs/ioctl.c:747 [inline] __x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:747 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fb8bf333ae9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb8bd0aa188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fb8bf446f60 RCX: 00007fb8bf333ae9 RDX: 0000000020000000 RSI: 0000000040046721 RDI: 0000000000000004 RBP: 00007fb8bf38df25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffff8dce59f R14: 00007fb8bd0aa300 R15: 0000000000022000 Modules linked in: ---[ end trace 02648cf2ca9e8991 ]--- RIP: 0010:ioctl_permit_fill fs/incfs/pseudo_files.c:153 [inline] RIP: 0010:pending_reads_dispatch_ioctl+0x855/0x29e0 fs/incfs/pseudo_files.c:1026 Code: 41 a4 85 ff 49 c7 c7 f9 ff ff ff 48 8b 5c 24 38 e9 e7 07 00 00 49 8d 5e 28 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 7d c0 b2 ff 48 c7 c0 80 33 dd 84 48 RSP: 0018:ffff8881dcf47cf8 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 0000000000000028 RCX: dffffc0000000000 RDX: ffffc90006576000 RSI: 000000000000001b RDI: 000000000000001c RBP: 0000000000000000 R08: ffffffff8198ec96 R09: ffffed103b9e8fb3 R10: ffffed103b9e8fb3 R11: 0000000000000000 R12: 0000000040046721 R13: ffff8881ea6347a0 R14: 0000000000000000 R15: 1ffff1103d4c68f4 FS: 00007fb8bd0aa700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001b4ec3000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 41 a4 rex.B movsb %ds:(%rsi),%es:(%rdi) 2: 85 ff test %edi,%edi 4: 49 c7 c7 f9 ff ff ff mov $0xfffffffffffffff9,%r15 b: 48 8b 5c 24 38 mov 0x38(%rsp),%rbx 10: e9 e7 07 00 00 jmpq 0x7fc 15: 49 8d 5e 28 lea 0x28(%r14),%rbx 19: 48 89 d8 mov %rbx,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 7d c0 b2 ff callq 0xffb2c0b5 38: 48 c7 c0 80 33 dd 84 mov $0xffffffff84dd3380,%rax 3f: 48 rex.W