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================================================================== BUG: KCSAN: data-race in __mark_inode_dirty / vfs_fsync_range write to 0xffff888109dd4848 of 8 bytes by task 3829 on cpu 0: __mark_inode_dirty+0x117/0x7d0 fs/fs-writeback.c:2409 mark_inode_dirty_sync include/linux/fs.h:2149 [inline] vfs_fsync_range+0xda/0x120 fs/sync.c:187 generic_write_sync include/linux/fs.h:2469 [inline] ext4_buffered_write_iter+0x397/0x3e0 fs/ext4/file.c:296 ext4_file_write_iter+0xd7/0x10e0 do_iter_write+0x4ae/0x770 fs/read_write.c:860 vfs_iter_write+0x50/0x70 fs/read_write.c:901 iter_file_splice_write+0x456/0x7d0 fs/splice.c:795 do_splice_from fs/splice.c:873 [inline] direct_splice_actor+0x84/0xa0 fs/splice.c:1039 splice_direct_to_actor+0x2ee/0x5f0 fs/splice.c:994 do_splice_direct+0x104/0x180 fs/splice.c:1082 do_sendfile+0x3b8/0x950 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1308 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888109dd4848 of 8 bytes by task 3812 on cpu 1: vfs_fsync_range+0x9c/0x120 fs/sync.c:186 generic_write_sync include/linux/fs.h:2469 [inline] ext4_buffered_write_iter+0x397/0x3e0 fs/ext4/file.c:296 ext4_file_write_iter+0xd7/0x10e0 do_iter_write+0x4ae/0x770 fs/read_write.c:860 vfs_iter_write+0x50/0x70 fs/read_write.c:901 iter_file_splice_write+0x456/0x7d0 fs/splice.c:795 do_splice_from fs/splice.c:873 [inline] direct_splice_actor+0x84/0xa0 fs/splice.c:1039 splice_direct_to_actor+0x2ee/0x5f0 fs/splice.c:994 do_splice_direct+0x104/0x180 fs/splice.c:1082 do_sendfile+0x3b8/0x950 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1308 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x0000000000000804 -> 0x0000000000000005 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 3812 Comm: syz-executor.3 Not tainted 6.4.0-rc1-syzkaller-00001-gba0ad6ed89fd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/05/09 15:17 | upstream | ba0ad6ed89fd | 30aa2a7e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __mark_inode_dirty / vfs_fsync_range |