kernel BUG in collapse

ID	Workflow	Correct	Bug	Created	Started	Finished	Revision	Error
493c0e11-51d2-4897-a06b-26b17e419076	assessment-security	💥	kernel BUG in collapse_file (3)	2026/06/10 05:36	2026/06/10 05:36	2026/06/10 05:53	34dab4be5c118c76aea929f2aa0c188548615110	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/3d5252f3447edc39d3... truncated to first 200 bytes; open job for full error
1e6d08a0-bd83-4006-9e14-153ef8c84242	assessment-security	💥	kernel BUG in collapse_file (3)	2026/06/04 08:52	2026/06/04 08:52	2026/06/04 09:03	62fe15281f5011cd203d8845b8767b10e7443aa5	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/3d5252f3447edc39d3... truncated to first 200 bytes; open job for full error
174a3b59-4335-4693-87d5-d5718826dd7d	assessment-security	💥	kernel BUG in collapse_file (3)	2026/06/02 08:01	2026/06/02 08:01	2026/06/02 08:24	1095583bae1d2729a3b4be301cb6ddc85ced9e38	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/3d5252f3447edc39d3... truncated to first 200 bytes; open job for full error
2bb1e6db-3e5e-4d70-8b38-8b4860ec8b33	assessment-security	💥	kernel BUG in collapse_file (3)	2026/05/23 05:56	2026/05/23 05:56	2026/05/23 06:07	c69befb30ac10e158cc9d1557b508ee3f0eca1de	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/3d5252f3447edc39d3... truncated to first 200 bytes; open job for full error

Title	Replies (including bot)	Last reply
[PATCH v3 10/13 fix] mm/khugepaged: collapse_pte_mapped_thp() with mmap_read_lock(): fix	1 (1)	2023/07/23 22:32
[syzbot] [mm?] kernel BUG in collapse_file (3)	1 (2)	2023/07/23 05:13

Title

Replies (including bot)

Last reply

[PATCH v3 10/13 fix] mm/khugepaged: collapse_pte_mapped_thp() with mmap_read_lock(): fix

1 (1)

2023/07/23 22:32

[syzbot] [mm?] kernel BUG in collapse_file (3)

1 (2)

2023/07/23 05:13

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	kernel BUG in collapse_file mm	-1				1	1762d	1756d	0/29	auto-closed as invalid on 2021/12/17 12:02
upstream	kernel BUG in collapse_file (2) mm	-1	C	error		27	1148d	1271d	0/29	closed as dup on 2023/04/14 15:43

Rank 🛈

upstream

kernel BUG in collapse_file mm

-1

1762d

1756d

0/29

auto-closed as invalid on 2021/12/17 12:02

upstream

kernel BUG in collapse_file (2) mm

-1

error

1148d

1271d

0/29

closed as dup on 2023/04/14 15:43

------------[ cut here ]------------ kernel BUG at mm/khugepaged.c:1785! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5882 Comm: syz-executor247 Not tainted 6.5.0-rc2-next-20230721-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:collapse_file+0x1169/0x5530 mm/khugepaged.c:1785 Code: 89 c6 e8 1a b1 a5 ff 84 db 0f 85 66 f1 ff ff e8 dd b5 a5 ff 0f 0b e9 5a f1 ff ff c6 44 24 48 00 e9 65 f0 ff ff e8 c7 b5 a5 ff <0f> 0b e8 c0 b5 a5 ff 4d 85 ed 74 1c e8 b6 b5 a5 ff 44 89 eb 31 ff RSP: 0018:ffffc900056a7820 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000000001eb RCX: 0000000000000000 RDX: ffff8880782d5940 RSI: ffffffff81e13729 RDI: 0000000000000007 RBP: 0000000777fa95eb R08: 0000000000000007 R09: 0000000000000000 R10: 00000000000001eb R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880299a0280 R15: 0000000777fa93eb FS: 00007f87449f56c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000100 CR3: 00000000235da000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> hpage_collapse_scan_file+0xc8e/0x1650 mm/khugepaged.c:2285 madvise_collapse+0x52c/0xb50 mm/khugepaged.c:2729 madvise_vma_behavior+0x200/0x1e60 mm/madvise.c:1094 madvise_walk_vmas+0x1cf/0x2c0 mm/madvise.c:1268 do_madvise+0x333/0x660 mm/madvise.c:1448 __do_sys_madvise mm/madvise.c:1461 [inline] __se_sys_madvise mm/madvise.c:1459 [inline] __x64_sys_madvise+0xaa/0x110 mm/madvise.c:1459 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f8744a553d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f87449f5228 EFLAGS: 00000246 ORIG_RAX: 000000000000001c RAX: ffffffffffffffda RBX: 00007f87449f56c0 RCX: 00007f8744a553d9 RDX: 0000000000000019 RSI: 0000000000600003 RDI: 0000000020000000 RBP: 00007f8744adf318 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8744adf310 R13: 6d766b2f7665642f R14: 00007ffc69639110 R15: 00007ffc696391f8 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:collapse_file+0x1169/0x5530 mm/khugepaged.c:1785 Code: 89 c6 e8 1a b1 a5 ff 84 db 0f 85 66 f1 ff ff e8 dd b5 a5 ff 0f 0b e9 5a f1 ff ff c6 44 24 48 00 e9 65 f0 ff ff e8 c7 b5 a5 ff <0f> 0b e8 c0 b5 a5 ff 4d 85 ed 74 1c e8 b6 b5 a5 ff 44 89 eb 31 ff RSP: 0018:ffffc900056a7820 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000000001eb RCX: 0000000000000000 RDX: ffff8880782d5940 RSI: ffffffff81e13729 RDI: 0000000000000007 RBP: 0000000777fa95eb R08: 0000000000000007 R09: 0000000000000000 R10: 00000000000001eb R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880299a0280 R15: 0000000777fa93eb FS: 00007f87449f56c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8744aaba38 CR3: 00000000235da000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (14):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2023/07/22 18:26	linux-next	ae867bc97b71	27cbe77f	.config	strace log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/22 14:03	linux-next	ae867bc97b71	27cbe77f	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/19 00:22	linux-next	aeba456828b4	022df2bb	.config	strace log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/19 00:01	linux-next	aeba456828b4	022df2bb	.config	strace log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/13 12:58	linux-next	e32622656258	86081196	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/24 02:05	linux-next	ae867bc97b71	27cbe77f	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/23 09:18	linux-next	ae867bc97b71	27cbe77f	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/22 00:33	linux-next	ae867bc97b71	27cbe77f	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/21 01:12	linux-next	c58c49dd8932	28847498	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/19 20:54	linux-next	352ce39a8bba	4547cdf9	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/17 19:41	linux-next	2205be537aeb	e5f10889	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/15 15:50	linux-next	7c2878be5732	35d9ecc5	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/13 15:50	linux-next	e32622656258	86081196	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file
2023/07/13 12:31	linux-next	e32622656258	86081196	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	kernel BUG in collapse_file

Crashes (14):

Assets (help?)