netlink: 12 bytes leftover after parsing attributes in process `syz.3.671'. ------------[ cut here ]------------ field width 1141310729 out of range WARNING: lib/vsprintf.c:2654 at set_field_width lib/vsprintf.c:2654 [inline], CPU#0: syz.3.671/9869 WARNING: lib/vsprintf.c:2654 at set_field_width lib/vsprintf.c:2651 [inline], CPU#0: syz.3.671/9869 WARNING: lib/vsprintf.c:2654 at vsnprintf+0x106b/0x1300 lib/vsprintf.c:2918, CPU#0: syz.3.671/9869 Modules linked in: CPU: 0 UID: 0 PID: 9869 Comm: syz.3.671 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:set_field_width lib/vsprintf.c:2654 [inline] RIP: 0010:set_field_width lib/vsprintf.c:2651 [inline] RIP: 0010:vsnprintf+0x106e/0x1300 lib/vsprintf.c:2918 Code: 74 08 48 89 df e8 c2 12 b0 f6 44 89 74 24 4c 44 0f b6 2b 49 89 de e9 f6 f3 ff ff e8 cc a8 3c f6 48 8d 3d b5 19 88 05 44 89 ee <67> 48 0f b9 3a 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 RSP: 0018:ffffc9000544ef20 EFLAGS: 00010087 RAX: 0000000000001e47 RBX: ffffffff8ceb58c2 RCX: ffffc90007851000 RDX: 0000000000080000 RSI: 0000000044070509 RDI: ffffffff9157b5c0 RBP: ffffc9000544f010 R08: 0000000000000004 R09: 0000000044070509 R10: 00000000007fffff R11: 0000000000000000 R12: 0000000000000002 R13: 0000000044070509 R14: 0000000000000030 R15: 00000000007fffff FS: 00007f37ddd866c0(0000) GS:ffff8880d5b4f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f37dcf87780 CR3: 0000000036fa2000 CR4: 0000000000352ef0 Call Trace: va_format+0x14e/0x4b0 lib/vsprintf.c:1725 pointer+0x929/0xe50 lib/vsprintf.c:2577 vsnprintf+0x649/0x1300 lib/vsprintf.c:2953 vprintk_store+0x3b3/0xbe0 kernel/printk/printk.c:2307 vprintk_emit+0x139/0x6b0 kernel/printk/printk.c:2455 dev_vprintk_emit+0x391/0x3e0 drivers/base/core.c:5000 dev_printk_emit+0xd2/0x10d drivers/base/core.c:5011 __dynamic_dev_dbg+0x252/0x310 lib/dynamic_debug.c:904 dtv_property_process_get.isra.0+0xf40/0x3690 drivers/media/dvb-core/dvb_frontend.c:1595 dvb_get_property.isra.0+0x273/0x690 drivers/media/dvb-core/dvb_frontend.c:2397 dvb_frontend_handle_ioctl+0x138c/0x2f00 drivers/media/dvb-core/dvb_frontend.c:2478 dvb_frontend_do_ioctl+0x1ce/0x320 drivers/media/dvb-core/dvb_frontend.c:2101 dvb_usercopy+0x167/0x340 drivers/media/dvb-core/dvbdev.c:996 dvb_frontend_ioctl+0x50/0x80 drivers/media/dvb-core/dvb_frontend.c:2115 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f37dcf9e159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f37ddd86028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f37dd225fa0 RCX: 00007f37dcf9e159 RDX: 00002000000002c0 RSI: 0000000080106f53 RDI: 0000000000000006 RBP: 00007f37dd03506b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f37dd226038 R14: 00007f37dd225fa0 R15: 00007ffcf0f12098 ---------------- Code disassembly (best guess): 0: 74 08 je 0xa 2: 48 89 df mov %rbx,%rdi 5: e8 c2 12 b0 f6 call 0xf6b012cc a: 44 89 74 24 4c mov %r14d,0x4c(%rsp) f: 44 0f b6 2b movzbl (%rbx),%r13d 13: 49 89 de mov %rbx,%r14 16: e9 f6 f3 ff ff jmp 0xfffff411 1b: e8 cc a8 3c f6 call 0xf63ca8ec 20: 48 8d 3d b5 19 88 05 lea 0x58819b5(%rip),%rdi # 0x58819dc 27: 44 89 ee mov %r13d,%esi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 36: fc ff df 39: 48 89 da mov %rbx,%rdx 3c: 48 c1 ea 03 shr $0x3,%rdx