KCSAN: data-race in ksys_write / ksys

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in ksys_write / ksys_write (6) fs	6	1	1297d	1297d	0/29	auto-closed as invalid on 2022/07/09 10:17
upstream	KCSAN: data-race in ksys_write / ksys_write (4) fs	6	2	1792d	1815d	0/29	auto-closed as invalid on 2021/03/01 11:18
upstream	KCSAN: data-race in ksys_write / ksys_write (5) fs	6	2	1432d	1449d	0/29	auto-closed as invalid on 2022/02/24 13:47
upstream	KCSAN: data-race in ksys_write / ksys_write (8) fs	6	1	1139d	1139d	0/29	auto-obsoleted due to no activity on 2022/12/14 10:38
upstream	KCSAN: data-race in ksys_write / ksys_write (7) fs	6	5	1176d	1247d	0/29	auto-obsoleted due to no activity on 2022/11/07 06:37
upstream	KCSAN: data-race in ksys_write / ksys_write (13) fs	6	1	393d	393d	0/29	auto-obsoleted due to no activity on 2025/01/19 23:33
upstream	KCSAN: data-race in ksys_write / ksys_write (11) fs	6	8	756d	744d	0/29	auto-obsoleted due to no activity on 2024/01/01 18:01
upstream	KCSAN: data-race in ksys_write / ksys_write (10) fs	6	1	890d	890d	0/29	auto-obsoleted due to no activity on 2023/08/20 13:19
upstream	KCSAN: data-race in ksys_write / ksys_write (3) fs	6	1	1863d	1841d	0/29	auto-closed as invalid on 2020/12/21 12:01
upstream	KCSAN: data-race in ksys_write / ksys_write fs	6	8	2044d	2233d	0/29	auto-closed as invalid on 2020/06/22 09:42
upstream	KCSAN: data-race in ksys_write / ksys_write (9) fs	6	2	981d	1045d	0/29	auto-obsoleted due to no activity on 2023/05/22 00:31
upstream	KCSAN: data-race in ksys_write / ksys_write (12) fs	6	3	673d	700d	0/29	auto-obsoleted due to no activity on 2024/03/24 05:08

================================================================== BUG: KCSAN: data-race in ksys_write / ksys_write write to 0xffff88812af72568 of 8 bytes by task 10211 on cpu 0: ksys_write+0x101/0x180 fs/read_write.c:633 __do_sys_write fs/read_write.c:643 [inline] __se_sys_write fs/read_write.c:640 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:640 do_syscall_64+0x51/0xb0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88812af72568 of 8 bytes by task 10217 on cpu 1: ksys_write+0x7f/0x180 fs/read_write.c:628 __do_sys_write fs/read_write.c:643 [inline] __se_sys_write fs/read_write.c:640 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:640 do_syscall_64+0x51/0xb0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 10217 Comm: syz-executor.4 Not tainted 5.8.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 10217 Comm: syz-executor.4 Not tainted 5.8.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x10f/0x19d lib/dump_stack.c:118 panic+0x207/0x64a kernel/panic.c:231 kcsan_report+0x684/0x690 kernel/kcsan/report.c:626 kcsan_setup_watchpoint+0x453/0x4d0 kernel/kcsan/core.c:519 ksys_write+0x7f/0x180 fs/read_write.c:628 __do_sys_write fs/read_write.c:643 [inline] __se_sys_write fs/read_write.c:640 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:640 do_syscall_64+0x51/0xb0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45c1f9 Code: Bad RIP value. RSP: 002b:00007f1af1cf2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000034c40 RCX: 000000000045c1f9 RDX: 0000000000000002 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 000000000078bfe0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bfac R13: 00007ffe09dce00f R14: 00007f1af1cf39c0 R15: 000000000078bfac Kernel Offset: disabled Rebooting in 86400 seconds..