netlink: 25 bytes leftover after parsing attributes in process `syz-executor3'. ================================================================== BUG: KASAN: global-out-of-bounds in show_timer+0x278/0x2b0 fs/proc/base.c:2274 Read of size 8 at addr ffffffff853431f8 by task syz-executor6/8641 CPU: 0 PID: 8641 Comm: syz-executor6 Not tainted 4.15.0-rc3+ #127 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 print_address_description+0x178/0x250 mm/kasan/report.c:252 kasan_report_error mm/kasan/report.c:351 [inline] kasan_report+0x25b/0x340 mm/kasan/report.c:409 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:430 show_timer+0x278/0x2b0 fs/proc/base.c:2274 traverse+0x248/0xa00 fs/seq_file.c:111 seq_read+0x96a/0x13d0 fs/seq_file.c:189 do_loop_readv_writev fs/read_write.c:673 [inline] do_iter_read+0x3db/0x5b0 fs/read_write.c:897 compat_readv+0x1bf/0x270 fs/read_write.c:1140 do_compat_preadv64+0xdc/0x100 fs/read_write.c:1189 C_SYSC_preadv fs/read_write.c:1209 [inline] compat_SyS_preadv+0x3b/0x50 fs/read_write.c:1203 do_syscall_32_irqs_on arch/x86/entry/common.c:327 [inline] do_fast_syscall_32+0x3ee/0xf9d arch/x86/entry/common.c:389 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:125 RIP: 0023:0xf7f67c79 RSP: 002b:00000000f776308c EFLAGS: 00000296 ORIG_RAX: 000000000000014d RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 0000000020c9bff8 RDX: 0000000000000001 RSI: 0000000000000062 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 The buggy address belongs to the variable: nstr.44444+0x18/0x40 Memory state around the buggy address: ffffffff85343080: fa fa fa fa 00 00 00 fa fa fa fa fa 00 06 fa fa ffffffff85343100: fa fa fa fa 07 fa fa fa fa fa fa fa 05 fa fa fa >ffffffff85343180: fa fa fa fa 07 fa fa fa fa fa fa fa 00 00 00 fa ^ ffffffff85343200: fa fa fa fa 00 fa fa fa fa fa fa fa 07 fa fa fa ffffffff85343280: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 8641 Comm: syz-executor6 Tainted: G B 4.15.0-rc3+ #127 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 panic+0x1e4/0x41c kernel/panic.c:183 kasan_end_report+0x50/0x50 mm/kasan/report.c:176 kasan_report_error mm/kasan/report.c:356 [inline] kasan_report+0x144/0x340 mm/kasan/report.c:409 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:430 show_timer+0x278/0x2b0 fs/proc/base.c:2274 traverse+0x248/0xa00 fs/seq_file.c:111 seq_read+0x96a/0x13d0 fs/seq_file.c:189 do_loop_readv_writev fs/read_write.c:673 [inline] do_iter_read+0x3db/0x5b0 fs/read_write.c:897 compat_readv+0x1bf/0x270 fs/read_write.c:1140 do_compat_preadv64+0xdc/0x100 fs/read_write.c:1189 C_SYSC_preadv fs/read_write.c:1209 [inline] compat_SyS_preadv+0x3b/0x50 fs/read_write.c:1203 do_syscall_32_irqs_on arch/x86/entry/common.c:327 [inline] do_fast_syscall_32+0x3ee/0xf9d arch/x86/entry/common.c:389 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:125 RIP: 0023:0xf7f67c79 RSP: 002b:00000000f776308c EFLAGS: 00000296 ORIG_RAX: 000000000000014d RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 0000000020c9bff8 RDX: 0000000000000001 RSI: 0000000000000062 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..