WARNING in add_mtd

ID	Workflow	Correct	Bug	Created	Started	Finished	Revision	Error
151631d4-f1f7-4435-baab-c3e4456be393	assessment-security	💥	WARNING in add_mtd_device	2026/06/23 00:01	2026/06/23 00:01	2026/06/23 00:24	5a630be623a83f54a0e7a5a72d78827acdc85248	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=arm64" "CROSS_COMPILE=aarch64-linux-gnu-" "CC=ccache clang" "LD=ld.lld" "O=/app/work... truncated to first 200 bytes; open job for full error
83edb5b2-0675-4e4d-84b0-1b51490623cc	assessment-security	💥	WARNING in add_mtd_device	2026/06/20 00:04	2026/06/20 00:04	2026/06/20 00:04	023e42b533e586523329e56d8cc833583d338ca9	dashboard requested TargetOS "linux" TargetArch "arm", but agent does not support it
04b80831-e21a-4237-b4a4-59f51b7d7346	assessment-security	💥	WARNING in add_mtd_device	2026/06/18 02:07	2026/06/18 02:07	2026/06/18 02:07	b62b3ded1759f79b37600c5ffe2b0a81b919b0b0	dashboard requested TargetOS "linux" TargetArch "arm", but agent does not support it

Title	Replies (including bot)	Last reply
[PATCH] mtd: mtdpart: validate partition bounds in mtd_add_partition()	1 (1)	2026/06/20 22:56
[PATCH] mtd: mtdpart: fix uninitialized erasesize on MTDPART_OFS_RETAIN error path	1 (1)	2026/06/20 17:06
[syzbot] [mtd?] WARNING in add_mtd_device	0 (4)	2026/06/20 16:09

Title

Replies (including bot)

Last reply

[PATCH] mtd: mtdpart: validate partition bounds in mtd_add_partition()

1 (1)

2026/06/20 22:56

[PATCH] mtd: mtdpart: fix uninitialized erasesize on MTDPART_OFS_RETAIN error path

1 (1)

2026/06/20 17:06

[syzbot] [mtd?] WARNING in add_mtd_device

0 (4)

2026/06/20 16:09

Created	Duration	User	Patch	Repo	Result
2026/06/20 16:09	51m	nivchenko.dev@gmail.com	patch	upstream	OK log
2026/06/20 13:05	47m	kartikey406@gmail.com	patch	upstream	OK log

Created

Duration

User

Patch

Repo

Result

2026/06/20 16:09

51m

nivchenko.dev@gmail.com

patch

upstream

OK log

2026/06/20 13:05

47m

kartikey406@gmail.com

patch

upstream

OK log

mtd partition "" doesn't have enough space: 0x8000003 < 0x8000084bb, disabled ------------[ cut here ]------------ WARNING: drivers/mtd/mtdcore.c:719 at add_mtd_device+0x56c/0x14cc drivers/mtd/mtdcore.c:719, CPU#0: syz.2.17/3665 Modules linked in: CPU: 0 UID: 0 PID: 3665 Comm: syz.2.17 Not tainted syzkaller #0 PREEMPT Hardware name: linux,dummy-virt (DT) pstate: 10000005 (nzcV daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : add_mtd_device+0x56c/0x14cc drivers/mtd/mtdcore.c:719 lr : mtd_add_partition+0x218/0x48c drivers/mtd/mtdpart.c:280 sp : ffff8000a2c276f0 x29: ffff8000a2c277b0 x28: ffff0000158a8000 x27: ffff00001ef34004 x26: 1fffe00003de683f x25: ffff00001ef34014 x24: 0000000000000004 x23: ffff00001ef34000 x22: 1ffff00014584f02 x21: 0000000000000000 x20: ffff00001ef341a0 x19: 0000000000000c00 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff80008764b708 x14: 1ffff00010ec96e1 x13: 0000000000000004 x12: ffff700014584ee9 x11: 1ffff00014584ee8 x10: ffff700014584ee8 x9 : dfff800000000000 x8 : ffff8000a2c27747 x7 : 1ffff00014584eea x6 : 0000000041b58ab3 x5 : ffff700014584eea x4 : ffff8000a2c27750 x3 : 1fffe00003de6800 x2 : 0000000000000000 x1 : 0000000000000007 x0 : 0000000000000000 Call trace: add_mtd_device+0x56c/0x14cc drivers/mtd/mtdcore.c:719 (P) mtd_add_partition+0x218/0x48c drivers/mtd/mtdpart.c:280 mtdchar_blkpg_ioctl+0x17c/0x1b8 drivers/mtd/mtdchar.c:562 mtdchar_ioctl+0x2f8/0x1ed8 drivers/mtd/mtdchar.c:1218 mtdchar_unlocked_ioctl+0xa0/0xfc drivers/mtd/mtdchar.c:1241 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x124/0x1a4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x74/0x240 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:121 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x58/0x2a4 arch/arm64/kernel/entry-common.c:736 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:755 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [<ffff800080215cc8>] copy_process+0x16a8/0x5700 kernel/fork.c:2232 softirqs last enabled at (0): [<ffff800080215ce8>] copy_process+0x16c8/0x5700 kernel/fork.c:2233 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ end trace 0000000000000000 ]---

Crashes (5):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2026/06/20 09:10	https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux master	a975094bf98c	43bfcdb0	.config	console log	report	syz / log	C		[disk image (non-bootable)] [vmlinux] [kernel image]	ci-qemu2-arm64	WARNING in add_mtd_device
2026/06/20 05:14	https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux master	a975094bf98c	43bfcdb0	.config	console log	report			info	[disk image (non-bootable)] [vmlinux] [kernel image]	ci-qemu2-arm64	WARNING in add_mtd_device
2026/06/20 05:13	https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux master	a975094bf98c	43bfcdb0	.config	console log	report			info	[disk image (non-bootable)] [vmlinux] [kernel image]	ci-qemu2-arm64	WARNING in add_mtd_device
2026/06/16 08:19	https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux master	0e0611827f33	50bb0618	.config	console log	report			info	[disk image (non-bootable)] [vmlinux] [kernel image]	ci-qemu2-arm64-compat	WARNING in add_mtd_device
2026/06/16 08:19	https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux master	0e0611827f33	50bb0618	.config	console log	report			info	[disk image (non-bootable)] [vmlinux] [kernel image]	ci-qemu2-arm64-compat	WARNING in add_mtd_device

Crashes (5):

Assets (help?)