syzbot |
sign-in | mailing list | source | docs |
🐞 Open [978] ≡ Subsystems 🐞 Fixed [5235] 🐞 Invalid [12492] ⬇ Missing Backports [83] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes | 💬 Send us feedback |
================================================================== BUG: KCSAN: data-race in ext4_handle_inode_extension / ext4_set_iomap write to 0xffff888036be4c38 of 8 bytes by task 28686 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] 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 0xffff888036be4c38 of 8 bytes by task 28701 on cpu 0: ext4_set_iomap+0x10a/0x470 fs/ext4/inode.c:3323 ext4_iomap_begin_report+0x3de/0x410 fs/ext4/inode.c:3569 iomap_apply+0xd4/0x660 fs/iomap/apply.c:46 iomap_fiemap+0xd1/0x200 fs/iomap/fiemap.c:88 _ext4_fiemap+0x36a/0x430 fs/ext4/extents.c:4860 ext4_fiemap+0x36/0x50 fs/ext4/extents.c:4885 ioctl_fiemap fs/ioctl.c:226 [inline] do_vfs_ioctl+0x5e1/0xd00 fs/ioctl.c:715 ksys_ioctl+0xb2/0x150 fs/ioctl.c:761 __do_sys_ioctl fs/ioctl.c:772 [inline] __se_sys_ioctl fs/ioctl.c:770 [inline] __x64_sys_ioctl+0x47/0x60 fs/ioctl.c:770 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: 28701 Comm: syz-executor.0 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/06/16 13:35 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 4ea9d964 | .config | console log | report | ci2-upstream-kcsan-gce |