WARNING in kcm_write

Date	Name	Commit	Repro	Result
2024/04/24	linux-5.15.y (ToT)	c52b9710c83d	C	[report] WARNING in kcm_write_msgs
2024/04/24	upstream (ToT)	9d1ddab261f3	C	Didn't crash

Date

Name

Commit

Repro

Result

2024/04/24

linux-5.15.y (ToT)

c52b9710c83d

[report] WARNING in kcm_write_msgs

2024/04/24

upstream (ToT)

9d1ddab261f3

Didn't crash

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	WARNING in kcm_write_msgs origin:upstream	C			2	30d	159d	0/3	upstream: reported C repro on 2023/11/28 05:07
upstream	WARNING in kcm_write_msgs net	C	done		443	1d11h	1508d	0/26	upstream: reported C repro on 2020/03/19 07:10
linux-4.14	WARNING in kcm_write_msgs	C		inconclusive	2	478d	1484d	0/1	upstream: reported C repro on 2020/04/12 04:13
linux-4.19	WARNING in kcm_write_msgs	C		error	8	472d	1496d	0/1	upstream: reported C repro on 2020/03/30 19:34

Created	Duration	User	Patch	Repo	Result
2024/04/24 15:54	26m	fix candidate		upstream	error job log (0)

Created

Duration

User

Patch

Repo

Result

2024/04/24 15:54

26m

fix candidate

upstream

error job log (0)

------------[ cut here ]------------ WARNING: CPU: 1 PID: 3972 at net/kcm/kcmsock.c:633 kcm_write_msgs+0x800/0xfc0 Modules linked in: CPU: 1 PID: 3972 Comm: syz-executor258 Not tainted 5.15.156-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 80401005 (Nzcv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--) pc : kcm_write_msgs+0x800/0xfc0 lr : kcm_write_msgs+0x7fc/0xfc0 net/kcm/kcmsock.c:633 sp : ffff80001cb37620 x29: ffff80001cb376a0 x28: 00000000ffffffea x27: dfff800000000000 x26: 0000000000220000 x25: ffff0000df914800 x24: ffff0000d7ee8000 x23: ffff0000d9f358c0 x22: ffff0000d9f35a00 x21: 0000000000000011 x20: ffff0000da37b400 x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: ffff8000084c4340 x15: 0000000000000001 x14: 1ffff0000292806a x13: dfff800000000000 x12: 0000000000000003 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000d5949b40 x8 : ffff800010f302d0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80000804685c x2 : 0000000000000006 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: kcm_write_msgs+0x800/0xfc0 kcm_sendmsg+0x1918/0x1ed8 net/kcm/kcmsock.c:1039 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] sock_write_iter+0x2b0/0x3f8 net/socket.c:1079 call_write_iter include/linux/fs.h:2172 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x87c/0xb3c fs/read_write.c:594 ksys_write+0x15c/0x26c fs/read_write.c:647 __do_sys_write fs/read_write.c:659 [inline] __se_sys_write fs/read_write.c:656 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:656 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 17798 hardirqs last enabled at (17797): [<ffff8000081b5d1c>] __local_bh_enable_ip+0x230/0x470 kernel/softirq.c:388 hardirqs last disabled at (17798): [<ffff800011991e80>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (17796): [<ffff80000fd58e3c>] spin_unlock_bh include/linux/spinlock.h:408 [inline] softirqs last enabled at (17796): [<ffff80000fd58e3c>] release_sock+0x1e4/0x270 net/core/sock.c:3276 softirqs last disabled at (17794): [<ffff80000fd58c94>] spin_lock_bh include/linux/spinlock.h:368 [inline] softirqs last disabled at (17794): [<ffff80000fd58c94>] release_sock+0x3c/0x270 net/core/sock.c:3263 ---[ end trace f599c1dd0ca5049e ]--- KCM: Hard failure on kcm_write_msgs

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/04/23 04:47	linux-5.15.y	c52b9710c83d	36c961ad	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan-arm64	WARNING in kcm_write_msgs

Crashes (1):

Assets (help?)