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================================================================== BUG: KCSAN: data-race in ext4_handle_inode_extension / generic_file_read_iter write to 0xffff8880bb6705b8 of 8 bytes by task 20236 on cpu 1: i_size_write include/linux/fs.h:894 [inline] ext4_update_inode_size fs/ext4/ext4.h:3083 [inline] ext4_handle_inode_extension+0x3b4/0x580 fs/ext4/file.c:330 ext4_dio_write_iter fs/ext4/file.c:536 [inline] ext4_file_write_iter+0x812/0xd30 fs/ext4/file.c:640 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 read to 0xffff8880bb6705b8 of 8 bytes by task 20232 on cpu 0: generic_file_buffered_read mm/filemap.c:2091 [inline] generic_file_read_iter+0x85b/0x18c0 mm/filemap.c:2309 ext4_file_read_iter fs/ext4/file.c:131 [inline] ext4_file_read_iter+0x103/0x360 fs/ext4/file.c:114 call_read_iter include/linux/fs.h:1901 [inline] generic_file_splice_read+0x2df/0x470 fs/splice.c:313 do_splice_to+0xc7/0x100 fs/splice.c:892 splice_direct_to_actor+0x1b9/0x540 fs/splice.c:971 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: 0 PID: 20232 Comm: syz-executor.2 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/06/10 13:32 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 5caaad3a | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/06/04 18:15 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 6720fdef | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/05/29 06:23 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | d19ed305 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/05/25 04:19 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 11284182 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/05/21 09:06 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 4afdfa20 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/05/19 18:42 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 6d882fd2 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/04/28 13:19 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | e3ecea2e | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/04/03 20:28 | https://github.com/google/ktsan.git kcsan | 40959e34d670 | 5ed396e6 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/03/14 15:21 | https://github.com/google/ktsan.git kcsan | 941e0d917bbf | 749688d2 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/03/13 02:44 | https://github.com/google/ktsan.git kcsan | 941e0d917bbf | d850e9d0 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/03/09 12:52 | https://github.com/google/ktsan.git kcsan | 941e0d917bbf | 2e9971bb | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/02/02 15:35 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 93e5e335 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/02/01 23:21 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 2274ad39 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/26 17:10 | https://github.com/google/ktsan.git kcsan | 245a43005292 | dd56146d | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/24 16:18 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 2e95ab33 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/23 17:15 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 11ebf937 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/20 17:32 | https://github.com/google/ktsan.git kcsan | 245a43005292 | c40da18c | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/17 10:42 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 3de7aabb | .config | console log | report | ci2-upstream-kcsan-gce |