WARNING in kcm_write

Date	Name	Commit	Repro	Result
2024/03/05	upstream (ToT)	90d35da658da	C	[report] WARNING in kcm_write_msgs

Date

Name

Commit

Repro

Result

2024/03/05

upstream (ToT)

90d35da658da

[report] WARNING in kcm_write_msgs

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in kcm_write_msgs net	C	done		443	10d	1503d	0/26	upstream: reported C repro on 2020/03/19 07:10
linux-4.14	WARNING in kcm_write_msgs	C		inconclusive	2	473d	1479d	0/1	upstream: reported C repro on 2020/04/12 04:13
linux-5.15	WARNING in kcm_write_msgs origin:lts-only	C		error	1	6d23h	7d22h	0/3	upstream: reported C repro on 2024/04/23 04:47
linux-4.19	WARNING in kcm_write_msgs	C		error	8	468d	1492d	0/1	upstream: reported C repro on 2020/03/30 19:34

Created	Duration	User	Patch	Repo	Result
2024/04/05 01:09	4h24m	bisect fix		linux-6.1.y	job log (0) log

Created

Duration

User

Patch

Repo

Result

2024/04/05 01:09

4h24m

bisect fix

linux-6.1.y

job log (0) log

------------[ cut here ]------------ WARNING: CPU: 0 PID: 4374 at net/kcm/kcmsock.c:634 kcm_write_msgs+0x800/0xfc0 Modules linked in: CPU: 0 PID: 4374 Comm: syz-executor374 Not tainted 6.1.80-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : kcm_write_msgs+0x800/0xfc0 lr : kcm_write_msgs+0x7fc/0xfc0 net/kcm/kcmsock.c:634 sp : ffff80001e297640 x29: ffff80001e2976c0 x28: 00000000ffffffea x27: dfff800000000000 x26: 0000000000088000 x25: ffff0000e5903c00 x24: ffff0000e5c4de40 x23: ffff0000e44d4b40 x22: ffff0000e44d4c80 x21: 0000000000000011 x20: ffff0000d9274800 x19: 0000000000000000 x18: 00000000000001a8 x17: ffff80019ebee000 x16: ffff8000084f8d9c x15: 0000000000000000 x14: 1ffff00002b040b0 x13: dfff800000000000 x12: 0000000000000003 x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff8000115fcdbc x8 : ffff0000d811b780 x7 : ffff8000103b6e90 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: kcm_write_msgs+0x800/0xfc0 kcm_sendmsg+0x1964/0x1e8c net/kcm/kcmsock.c:1040 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] sock_write_iter+0x2d8/0x414 net/socket.c:1143 call_write_iter include/linux/fs.h:2251 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x610/0x914 fs/read_write.c:584 ksys_write+0x15c/0x26c fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 4962 hardirqs last enabled at (4961): [<ffff8000081c7770>] __local_bh_enable_ip+0x230/0x470 kernel/softirq.c:401 hardirqs last disabled at (4962): [<ffff800012141c04>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (4960): [<ffff8000103b6fcc>] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (4960): [<ffff8000103b6fcc>] release_sock+0x178/0x1cc net/core/sock.c:3510 softirqs last disabled at (4958): [<ffff8000103b6e90>] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (4958): [<ffff8000103b6e90>] release_sock+0x3c/0x1cc net/core/sock.c:3497 ---[ end trace 0000000000000000 ]--- KCM: Hard failure on kcm_write_msgs

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/03/05 08:57	linux-6.1.y	a3eb3a74aa8c	5fc53669	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci2-linux-6-1-kasan-arm64	WARNING in kcm_write_msgs
2023/11/28 05:06	linux-6.1.y	69e434a1cb21	7ec6c044	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-6-1-kasan	WARNING in kcm_write_msgs

Crashes (2):

Assets (help?)