------------[ cut here ]------------ kernel BUG at drivers/android/binder.c:1173! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 3 UID: 0 PID: 5427 Comm: syz.1.10 Not tainted 6.11.0-rc2-syzkaller-00257-g5189dafa4cf9 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:binder_get_ref_for_node_olocked drivers/android/binder.c:1173 [inline] RIP: 0010:binder_inc_ref_for_node+0xfd6/0x11d0 drivers/android/binder.c:1476 Code: da f1 ff ff 48 c7 c7 98 86 77 8d e8 44 61 51 f9 e9 19 f3 ff ff 48 8b 7c 24 60 e8 65 61 51 f9 e9 2c fd ff ff e8 3b c7 f2 f8 90 <0f> 0b e8 13 62 51 f9 e9 93 fb ff ff 4c 89 e7 e8 e6 60 51 f9 e9 b0 RSP: 0018:ffffc900035578e0 EFLAGS: 00010283 RAX: 0000000000002062 RBX: ffff8880129f7810 RCX: ffffc90007039000 RDX: 0000000000040000 RSI: ffffffff88985af5 RDI: 0000000000000004 RBP: ffffc90003557970 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801b4abc00 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802c300000(0063) knlGS:00000000f5746b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000000c249a52 CR3: 0000000029a52000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: binder_thread_write+0x248d/0x3ac0 drivers/android/binder.c:3944 binder_ioctl_write_read drivers/android/binder.c:5161 [inline] binder_ioctl+0x2250/0x6b10 drivers/android/binder.c:5447 compat_ptr_ioctl+0x71/0xb0 fs/ioctl.c:946 __do_compat_sys_ioctl+0x2c3/0x330 fs/ioctl.c:1007 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7f95579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f574656c EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000c0306201 RDX: 00000000200003c0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:binder_get_ref_for_node_olocked drivers/android/binder.c:1173 [inline] RIP: 0010:binder_inc_ref_for_node+0xfd6/0x11d0 drivers/android/binder.c:1476 Code: da f1 ff ff 48 c7 c7 98 86 77 8d e8 44 61 51 f9 e9 19 f3 ff ff 48 8b 7c 24 60 e8 65 61 51 f9 e9 2c fd ff ff e8 3b c7 f2 f8 90 <0f> 0b e8 13 62 51 f9 e9 93 fb ff ff 4c 89 e7 e8 e6 60 51 f9 e9 b0 RSP: 0018:ffffc900035578e0 EFLAGS: 00010283 RAX: 0000000000002062 RBX: ffff8880129f7810 RCX: ffffc90007039000 RDX: 0000000000040000 RSI: ffffffff88985af5 RDI: 0000000000000004 RBP: ffffc90003557970 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801b4abc00 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802c300000(0063) knlGS:00000000f5746b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000000c249a52 CR3: 0000000029a52000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi