syzbot |
sign-in | mailing list | source | docs |
================================================================== BUG: KCSAN: data-race in mark_buffer_dirty_inode / mark_buffer_dirty_inode write to 0xffff88808bcb0d58 of 8 bytes by task 6052 on cpu 0: mark_buffer_dirty_inode+0x21d/0x240 fs/buffer.c:594 fat16_ent_put+0x7b/0x90 fs/fat/fatent.c:182 fat_ent_write+0x69/0xf0 fs/fat/fatent.c:415 fat_chain_add+0x356/0x410 fs/fat/misc.c:130 fat_add_cluster+0x91/0xd0 fs/fat/inode.c:113 __fat_get_block fs/fat/inode.c:155 [inline] fat_get_block+0x3c6/0x4f0 fs/fat/inode.c:190 __block_write_begin_int+0x306/0xf80 fs/buffer.c:2002 __block_write_begin fs/buffer.c:2052 [inline] block_write_begin+0x76/0x200 fs/buffer.c:2111 cont_write_begin+0x3bd/0x660 fs/buffer.c:2460 fat_write_begin+0x69/0xc0 fs/fat/inode.c:236 pagecache_write_begin+0x67/0x90 mm/filemap.c:3121 cont_expand_zero fs/buffer.c:2387 [inline] cont_write_begin+0x176/0x660 fs/buffer.c:2450 fat_write_begin+0x69/0xc0 fs/fat/inode.c:236 generic_perform_write+0x13a/0x320 mm/filemap.c:3302 __generic_file_write_iter+0x240/0x370 mm/filemap.c:3431 generic_file_write_iter+0x294/0x38e mm/filemap.c:3463 call_write_iter include/linux/fs.h:1907 [inline] new_sync_write+0x303/0x400 fs/read_write.c:484 __vfs_write+0x9e/0xb0 fs/read_write.c:497 vfs_write fs/read_write.c:559 [inline] vfs_write+0x189/0x380 fs/read_write.c:543 ksys_write+0xc5/0x1a0 fs/read_write.c:612 __do_sys_write fs/read_write.c:624 [inline] __se_sys_write fs/read_write.c:621 [inline] __x64_sys_write+0x49/0x60 fs/read_write.c:621 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88808bcb0d58 of 8 bytes by task 6072 on cpu 1: mark_buffer_dirty_inode+0x9e/0x240 fs/buffer.c:590 fat16_ent_put+0x7b/0x90 fs/fat/fatent.c:182 fat_alloc_clusters+0x4e1/0xbf0 fs/fat/fatent.c:501 fat_add_cluster+0x3b/0xd0 fs/fat/inode.c:108 __fat_get_block fs/fat/inode.c:155 [inline] fat_get_block+0x3c6/0x4f0 fs/fat/inode.c:190 __block_write_begin_int+0x306/0xf80 fs/buffer.c:2002 __block_write_begin fs/buffer.c:2052 [inline] block_write_begin+0x76/0x200 fs/buffer.c:2111 cont_write_begin+0x3bd/0x660 fs/buffer.c:2460 fat_write_begin+0x69/0xc0 fs/fat/inode.c:236 generic_perform_write+0x13a/0x320 mm/filemap.c:3302 __generic_file_write_iter+0x2d7/0x370 mm/filemap.c:3399 generic_file_write_iter+0x294/0x38e mm/filemap.c:3463 call_write_iter include/linux/fs.h:1907 [inline] do_iter_readv_writev+0x4a7/0x5d0 fs/read_write.c:694 do_iter_write fs/read_write.c:999 [inline] do_iter_write+0x137/0x3a0 fs/read_write.c:980 vfs_iter_write+0x56/0x80 fs/read_write.c:1040 iter_file_splice_write+0x530/0x830 fs/splice.c:760 do_splice_from fs/splice.c:863 [inline] direct_splice_actor+0x97/0xb0 fs/splice.c:1037 splice_direct_to_actor+0x22f/0x540 fs/splice.c:992 do_splice_direct+0x152/0x1d0 fs/splice.c:1080 do_sendfile+0x380/0x800 fs/read_write.c:1521 __do_sys_sendfile64 fs/read_write.c:1582 [inline] __se_sys_sendfile64 fs/read_write.c:1568 [inline] __x64_sys_sendfile64+0x121/0x140 fs/read_write.c:1568 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 6072 Comm: syz-executor.5 Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/06/05 22:58 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | d36418e9 | .config | console log | report | ci2-upstream-kcsan-gce |