------------[ cut here ]------------
generic_make_request: Trying to write to read-only block-device sda1 (partno 1)
WARNING: CPU: 0 PID: 6585 at block/blk-core.c:2182 bio_check_ro block/blk-core.c:2182 [inline]
WARNING: CPU: 0 PID: 6585 at block/blk-core.c:2182 blk_partition_remap block/blk-core.c:2233 [inline]
WARNING: CPU: 0 PID: 6585 at block/blk-core.c:2182 generic_make_request_checks+0x1f9b/0x22e0 block/blk-core.c:2284
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 6585 Comm: syz-executor.4 Not tainted 4.19.167-syzkaller #0
bond599: Enslaving bridge3709 as a backup interface with an up link
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
netlink: 'syz-executor.3': attribute type 1 has an invalid length.
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2fe lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x61 kernel/panic.c:541
 report_bug+0x262/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:bio_check_ro block/blk-core.c:2182 [inline]
RIP: 0010:blk_partition_remap block/blk-core.c:2233 [inline]
RIP: 0010:generic_make_request_checks+0x1f9b/0x22e0 block/blk-core.c:2284
Code: 2c 03 00 00 45 8b be 9c 04 00 00 48 8d 74 24 68 48 89 ef e8 17 24 06 00 48 c7 c7 00 06 b2 88 48 89 c6 44 89 fa e8 10 b0 ce fd <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 0f b6 04
RSP: 0018:ffff88820215f380 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8880ac2e0000 RCX: 0000000000000000
RDX: 000000000002a25a RSI: ffffffff814fde01 RDI: ffffed104042be62
RBP: ffff88809d8798c0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809d8798f0
R13: ffff88809d8798c8 R14: ffff8880a8f37500 R15: 0000000000000001
 generic_make_request+0x23f/0xdf0 block/blk-core.c:2411
 submit_bio+0xb1/0x430 block/blk-core.c:2575
 submit_bh_wbc+0x5a7/0x760 fs/buffer.c:3090
 submit_bh fs/buffer.c:3096 [inline]
 __sync_dirty_buffer+0x14e/0x320 fs/buffer.c:3191
 __ext4_handle_dirty_metadata+0x234/0x590 fs/ext4/ext4_jbd2.c:300
 ext4_handle_dirty_dirent_node fs/ext4/namei.c:402 [inline]
 add_dirent_to_buf+0x44a/0x770 fs/ext4/namei.c:1948
 ext4_add_entry+0x508/0xbb0 fs/ext4/namei.c:2154
 ext4_add_nondir fs/ext4/namei.c:2484 [inline]
 ext4_create+0x338/0x5f0 fs/ext4/namei.c:2526
 lookup_open+0x893/0x1a20 fs/namei.c:3235
 do_last fs/namei.c:3327 [inline]
 path_openat+0x1094/0x2df0 fs/namei.c:3537
 do_filp_open+0x18c/0x3f0 fs/namei.c:3567
 do_sys_open+0x3b3/0x520 fs/open.c:1085
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45e219
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f7be16f6c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 000000000119bfb8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007fff7bf2804f R14: 00007f7be16f79c0 R15: 000000000119bf8c
Kernel Offset: disabled
Rebooting in 86400 seconds..