KCSAN: data-race in do_sendfile / ksys

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in do_sendfile / ksys_write (16) fs	6	1	563d	563d	0/29	auto-obsoleted due to no activity on 2024/05/28 12:59
upstream	KCSAN: data-race in do_sendfile / ksys_write (5) fs	6	1	1753d	1753d	0/29	auto-closed as invalid on 2021/02/23 08:15
upstream	KCSAN: data-race in do_sendfile / ksys_write (7) fs	6	3	1384d	1408d	0/29	auto-closed as invalid on 2022/02/27 04:59
upstream	KCSAN: data-race in do_sendfile / ksys_write (8) fs	6	1	1344d	1344d	0/29	auto-closed as invalid on 2022/04/08 18:00
upstream	KCSAN: data-race in do_sendfile / ksys_write (12) fs	6	2	873d	886d	0/29	auto-obsoleted due to no activity on 2023/07/23 08:25
upstream	KCSAN: data-race in do_sendfile / ksys_write (15) fs	6	1	623d	623d	0/29	auto-obsoleted due to no activity on 2024/03/29 14:30
upstream	KCSAN: data-race in do_sendfile / ksys_write (14) fs	6	2	698d	697d	0/29	auto-obsoleted due to no activity on 2024/01/14 07:58
upstream	KCSAN: data-race in do_sendfile / ksys_write (13) fs	6	5	766d	823d	0/29	auto-obsoleted due to no activity on 2023/11/07 08:57
upstream	KCSAN: data-race in do_sendfile / ksys_write (2) fs	6	2	2079d	2142d	0/29	auto-closed as invalid on 2020/05/08 04:57
upstream	KCSAN: data-race in do_sendfile / ksys_write (6) fs	6	1	1685d	1685d	0/29	auto-closed as invalid on 2021/05/17 10:56
upstream	KCSAN: data-race in do_sendfile / ksys_write (4) fs	6	1	1789d	1789d	0/29	auto-closed as invalid on 2021/01/18 19:47
upstream	KCSAN: data-race in do_sendfile / ksys_write (10) fs	6	1	1203d	1203d	0/29	auto-closed as invalid on 2022/08/27 13:39
upstream	KCSAN: data-race in do_sendfile / ksys_write (3) fs	6	1	1862d	1862d	0/29	auto-closed as invalid on 2020/11/06 02:13
upstream	KCSAN: data-race in do_sendfile / ksys_write (9) fs	6	2	1285d	1288d	0/29	auto-closed as invalid on 2022/06/06 18:20
upstream	KCSAN: data-race in do_sendfile / ksys_write (11) fs	6	1	1136d	1136d	0/29	auto-obsoleted due to no activity on 2022/11/02 18:18

================================================================== BUG: KCSAN: data-race in do_sendfile / ksys_write write to 0xffff888120e85e68 of 8 bytes by task 25446 on cpu 1: ksys_write+0x101/0x1b0 fs/read_write.c:613 __do_sys_write fs/read_write.c:623 [inline] __se_sys_write fs/read_write.c:620 [inline] __x64_sys_write+0x4c/0x60 fs/read_write.c:620 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888120e85e68 of 8 bytes by task 25459 on cpu 0: do_sendfile+0x299/0x7f0 fs/read_write.c:1437 __do_sys_sendfile64 fs/read_write.c:1519 [inline] __se_sys_sendfile64 fs/read_write.c:1511 [inline] __x64_sys_sendfile64+0xbe/0x140 fs/read_write.c:1511 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 25459 Comm: syz-executor.2 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 25459 Comm: syz-executor.2 Not tainted 5.4.0-rc3+ #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+0xf5/0x159 lib/dump_stack.c:113 panic+0x210/0x640 kernel/panic.c:221 kcsan_report.cold+0xc/0x10 kernel/kcsan/report.c:302 __kcsan_setup_watchpoint+0x32e/0x4a0 kernel/kcsan/core.c:411 __tsan_read8 kernel/kcsan/kcsan.c:36 [inline] __tsan_read8+0x2c/0x30 kernel/kcsan/kcsan.c:36 do_sendfile+0x299/0x7f0 fs/read_write.c:1437 __do_sys_sendfile64 fs/read_write.c:1519 [inline] __se_sys_sendfile64 fs/read_write.c:1511 [inline] __x64_sys_sendfile64+0xbe/0x140 fs/read_write.c:1511 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x459f49 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff15a616c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459f49 RDX: 0000000020001000 RSI: 0000000000000003 RDI: 0000000000000003 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000ffff R11: 0000000000000246 R12: 00007ff15a6176d4 R13: 00000000004c7c7c R14: 00000000004de068 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..