PF_BRIDGE: RTM_SETLINK with unknown ifindex BTRFS: device fsid ecf6f2a3-2997-48ae-b81e-1b00920efd9a devid 0 transid 5 /dev/loop7 ================================================================== BUG: KASAN: out-of-bounds in unwind_get_return_address+0x98/0xb0 arch/x86/kernel/unwind_frame.c:17 Read of size 8 at addr ffff8801cb5cf8e0 by task syz-executor6/6451 CPU: 1 PID: 6451 Comm: syz-executor6 Not tainted 4.9.92-g4fb542f #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801ca8077c8 ffffffff81d9c509 ffffea00072d73c0 ffff8801cb5cf8e0 0000000000000000 ffff8801cb5cf8e8 ffff8801cc35bb40 ffff8801ca807800 ffffffff8156556b ffff8801cb5cf8e0 0000000000000008 0000000000000000 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] print_address_description+0x6c/0x234 mm/kasan/report.c:256 [] kasan_report_error mm/kasan/report.c:355 [inline] [] kasan_report.cold.6+0xac/0x2f5 mm/kasan/report.c:412 [] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433 [] unwind_get_return_address+0x98/0xb0 arch/x86/kernel/unwind_frame.c:17 [] __save_stack_trace+0x8d/0xf0 arch/x86/kernel/stacktrace.c:43 [] save_stack_trace_tsk+0x48/0x70 arch/x86/kernel/stacktrace.c:71 [] proc_pid_stack+0x148/0x220 fs/proc/base.c:467 [] proc_single_show+0xfd/0x170 fs/proc/base.c:769 [] seq_read+0x4b6/0x12e0 fs/seq_file.c:240 [] do_loop_readv_writev.part.18+0xd5/0x280 fs/read_write.c:718 [] do_loop_readv_writev fs/read_write.c:707 [inline] [] do_readv_writev+0x565/0x7a0 fs/read_write.c:873 [] vfs_readv+0x84/0xc0 fs/read_write.c:897 [] do_readv+0xe6/0x260 fs/read_write.c:923 [] SYSC_readv fs/read_write.c:1010 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1007 [] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb The buggy address belongs to the page: page:ffffea00072d73c0 count:0 mapcount:0 mapping: (null) index:0x0 flags: 0x8000000000000000() page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801cb5cf780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801cb5cf800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8801cb5cf880: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 ^ ffff8801cb5cf900: f2 f2 f2 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 ffff8801cb5cf980: 00 00 00 00 00 00 f1 f1 f1 f1 00 f2 f2 f2 f2 f2 ==================================================================