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================================================================== BUG: KCSAN: data-race in __mark_inode_dirty / vfs_fsync_range write to 0xffff888106a62138 of 4 bytes by task 4321 on cpu 0: __mark_inode_dirty+0x110/0x7e0 fs/fs-writeback.c:2478 generic_update_time fs/inode.c:2041 [inline] inode_update_time fs/inode.c:2054 [inline] __file_update_time fs/inode.c:2243 [inline] file_modified_flags+0x2fd/0x330 fs/inode.c:2314 file_modified+0x17/0x20 fs/inode.c:2330 ext4_write_checks fs/ext4/file.c:279 [inline] ext4_buffered_write_iter+0x1cc/0x370 fs/ext4/file.c:295 ext4_file_write_iter+0x293/0xe10 iter_file_splice_write+0x5f1/0x980 fs/splice.c:743 do_splice_from fs/splice.c:941 [inline] direct_splice_actor+0x160/0x2c0 fs/splice.c:1164 splice_direct_to_actor+0x302/0x670 fs/splice.c:1108 do_splice_direct_actor fs/splice.c:1207 [inline] do_splice_direct+0xd7/0x150 fs/splice.c:1233 do_sendfile+0x39b/0x970 fs/read_write.c:1388 __do_sys_sendfile64 fs/read_write.c:1455 [inline] __se_sys_sendfile64 fs/read_write.c:1441 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1441 x64_sys_call+0xed5/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:41 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888106a62138 of 4 bytes by task 4315 on cpu 1: vfs_fsync_range+0x9a/0x130 fs/sync.c:186 generic_write_sync include/linux/fs.h:2871 [inline] ext4_buffered_write_iter+0x326/0x370 fs/ext4/file.c:305 ext4_file_write_iter+0x293/0xe10 iter_file_splice_write+0x5f1/0x980 fs/splice.c:743 do_splice_from fs/splice.c:941 [inline] direct_splice_actor+0x160/0x2c0 fs/splice.c:1164 splice_direct_to_actor+0x302/0x670 fs/splice.c:1108 do_splice_direct_actor fs/splice.c:1207 [inline] do_splice_direct+0xd7/0x150 fs/splice.c:1233 do_sendfile+0x39b/0x970 fs/read_write.c:1388 __do_sys_sendfile64 fs/read_write.c:1455 [inline] __se_sys_sendfile64 fs/read_write.c:1441 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1441 x64_sys_call+0xed5/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:41 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000820 -> 0x00000028 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 4315 Comm: syz.4.269 Not tainted 6.11.0-syzkaller-11993-g3efc57369a0c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/09/29 13:13 | upstream | 3efc57369a0c | ba29ff75 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __mark_inode_dirty / vfs_fsync_range | ||
2024/09/25 05:01 | upstream | 684a64bf32b6 | 5643e0e9 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __mark_inode_dirty / vfs_fsync_range |