audit: type=1804 audit(1564260352.326:70): pid=10694 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="file0" dev="sda1" ino=16609 res=1 net_ratelimit: 16 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 ------------[ cut here ]------------ kernel BUG at fs/buffer.c:3111! audit: type=1804 audit(1564260352.326:71): pid=10694 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="file0" dev="sda1" ino=16609 res=1 invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 10694 Comm: syz-executor.5 Not tainted 4.14.134 #30 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 audit: type=1804 audit(1564260352.376:72): pid=10701 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="file0" dev="sda1" ino=16609 res=1 task: ffff888080986580 task.stack: ffff888055730000 RIP: 0010:submit_bh_wbc+0x5a0/0x720 fs/buffer.c:3111 RSP: 0018:ffff888055737820 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff888094045150 RCX: ffffc9000b267000 RDX: 000000000000885d RSI: ffffffff81998780 RDI: 0000000000000000 audit: type=1804 audit(1564260352.376:73): pid=10707 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="file0" dev="sda1" ino=16609 res=1 RBP: ffff888055737868 R08: 0000000000000000 R09: ffff888080986e20 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888094045150 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f4f6ed00700(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4f6ecbddb8 CR3: 00000000a6f61000 CR4: 00000000001406f0 DR0: 000000000000b8c4 DR1: 0000000000000000 DR2: 0000000000000000 audit: type=1804 audit(1564260352.376:74): pid=10701 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="file0" dev="sda1" ino=16609 res=1 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: submit_bh fs/buffer.c:3158 [inline] __bread_slow fs/buffer.c:1238 [inline] __bread_gfp+0x106/0x290 fs/buffer.c:1420 sb_bread include/linux/buffer_head.h:307 [inline] fat__get_entry+0x4a3/0x8b0 fs/fat/dir.c:100 audit: type=1804 audit(1564260352.386:75): pid=10701 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="file0" dev="sda1" ino=16609 res=1 fat_get_entry fs/fat/dir.c:128 [inline] fat_get_short_entry+0x130/0x2a0 fs/fat/dir.c:876 fat_subdirs+0xa7/0x150 fs/fat/dir.c:942 fat_read_root fs/fat/inode.c:1409 [inline] fat_fill_super+0x1d13/0x3560 fs/fat/inode.c:1839 vfat_fill_super+0x32/0x40 fs/fat/namei_vfat.c:1059 mount_bdev+0x2be/0x370 fs/super.c:1134 vfat_mount+0x35/0x40 fs/fat/namei_vfat.c:1066 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c27a RSP: 002b:00007f4f6ecffa88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f4f6ecffb40 RCX: 000000000045c27a RDX: 00007f4f6ecffae0 RSI: 0000000020000000 RDI: 00007f4f6ecffb00 RBP: 0000000000000001 R08: 00007f4f6ecffb40 R09: 00007f4f6ecffae0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 R13: 00000000004c8a68 R14: 00000000004df860 R15: 00000000ffffffff Code: f0 80 63 01 f7 e9 3d fb ff ff 48 8d 43 20 48 89 45 d0 48 8d 43 10 48 89 45 c0 e9 34 fc ff ff e8 87 1f c3 ff 0f 0b e8 80 1f c3 ff <0f> 0b e8 79 1f c3 ff 0f 0b e8 72 1f c3 ff 0f 0b e8 6b 1f c3 ff protocol 88fb is buggy, dev hsr_slave_0 RIP: submit_bh_wbc+0x5a0/0x720 fs/buffer.c:3111 RSP: ffff888055737820 ---[ end trace b0c322b298a098cf ]--- protocol 88fb is buggy, dev hsr_slave_1