syzbot |
sign-in | mailing list | source | docs |
🐞 Open [964] ≡ Subsystems 🐞 Fixed [5156] 🐞 Invalid [12313] ⬇ Missing Backports [83] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes | 💬 Send us feedback |
================================================================== BUG: KCSAN: data-race in ext4_alloc_da_blocks / ext4_da_release_space write to 0xffff8880810dccf0 of 4 bytes by task 25272 on cpu 0: ext4_da_release_space+0x102/0x2c0 fs/ext4/inode.c:1502 ext4_es_remove_extent+0xd1/0x1f0 fs/ext4/extents_status.c:1441 ext4_ext_truncate+0xca/0x130 fs/ext4/extents.c:4611 ext4_truncate+0x5c8/0x9d0 fs/ext4/inode.c:4175 ext4_setattr+0xdda/0x1670 fs/ext4/inode.c:5333 notify_change+0x7e1/0xaa0 fs/attr.c:337 do_truncate+0xfb/0x180 fs/open.c:64 handle_truncate fs/namei.c:3015 [inline] do_last fs/namei.c:3426 [inline] path_openat+0x13e8/0x3580 fs/namei.c:3537 do_filp_open+0x11e/0x1b0 fs/namei.c:3567 do_sys_open+0x3b3/0x4f0 fs/open.c:1097 ksys_open include/linux/syscalls.h:1385 [inline] __do_sys_creat fs/open.c:1155 [inline] __se_sys_creat fs/open.c:1153 [inline] __x64_sys_creat+0x45/0x60 fs/open.c:1153 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8880810dccf0 of 4 bytes by task 25271 on cpu 1: ext4_alloc_da_blocks+0x4b/0x180 fs/ext4/inode.c:3111 ext4_release_file+0x10d/0x210 fs/ext4/file.c:141 __fput+0x1e1/0x520 fs/file_table.c:280 ____fput+0x1f/0x30 fs/file_table.c:313 task_work_run+0xf6/0x130 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x2b4/0x2c0 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x384/0x3a0 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 25271 Comm: syz-executor.0 Not tainted 5.5.0-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/02/08 06:35 | https://github.com/google/ktsan.git kcsan | 6cccb8ba35bd | 06150bf1 | .config | console log | report | ci2-upstream-kcsan-gce |