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BUG: corrupted list in add_to_unbuddied

Status: upstream: reported syz repro on 2024/09/08 22:22
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+30eac43568e2b3d65728@syzkaller.appspotmail.com
First crash: 203d, last: 3d16h
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [mm?] BUG: corrupted list in add_to_unbuddied 4 (6) 2024/10/18 07:56
▶ ▼ Last patch testing requests (4)
Created Duration User Patch Repo Result
2025/02/16 04:03 24m retest repro upstream OK log
2025/02/16 04:03 25m retest repro upstream report log
2024/11/17 23:10 18m retest repro upstream OK log
2024/11/17 23:10 17m retest repro upstream report log

Sample crash report:
 slab kmalloc-96 start ffff88801d194180 pointer offset 0 size 96
list_add corruption. next->prev should be prev (ffffe8ffffc380b0), but was ffffffff84ba7b60. (next=ffff88801d194180).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:31!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 47 Comm: kworker/u4:3 Not tainted 6.14.0-rc7-syzkaller-00186-gd07de43e3f05 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: zswap1 compact_page_work
RIP: 0010:__list_add_valid_or_report+0xf3/0x130 lib/list_debug.c:29
Code: 84 0a fd 42 80 7c 2d 00 00 74 08 48 89 df e8 d4 7c 2c fd 49 8b 56 08 48 c7 c7 60 02 81 8c 4c 89 e6 4c 89 f1 e8 de 63 2a fc 90 <0f> 0b 4c 89 e7 e8 c3 84 0a fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 a4
RSP: 0018:ffffc90000627a28 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff88801d194188 RCX: 26623f43b528bd00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 1ffff11003a32831 R08: ffffffff81a1364c R09: fffffbfff1d3a69c
R10: dffffc0000000000 R11: fffffbfff1d3a69c R12: ffffe8ffffc380b0
R13: dffffc0000000000 R14: ffff88801d194180 R15: ffff888040342000
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c002a1f008 CR3: 00000000442ca000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_add_valid include/linux/list.h:88 [inline]
 __list_add include/linux/list.h:150 [inline]
 list_add include/linux/list.h:169 [inline]
 add_to_unbuddied+0x2e4/0x4d0 mm/z3fold.c:550
 do_compact_page+0x5da/0xd30 mm/z3fold.c:772
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3319
 worker_thread+0x870/0xd30 kernel/workqueue.c:3400
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0xf3/0x130 lib/list_debug.c:29
Code: 84 0a fd 42 80 7c 2d 00 00 74 08 48 89 df e8 d4 7c 2c fd 49 8b 56 08 48 c7 c7 60 02 81 8c 4c 89 e6 4c 89 f1 e8 de 63 2a fc 90 <0f> 0b 4c 89 e7 e8 c3 84 0a fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 a4
RSP: 0018:ffffc90000627a28 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff88801d194188 RCX: 26623f43b528bd00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 1ffff11003a32831 R08: ffffffff81a1364c R09: fffffbfff1d3a69c
R10: dffffc0000000000 R11: fffffbfff1d3a69c R12: ffffe8ffffc380b0
R13: dffffc0000000000 R14: ffff88801d194180 R15: ffff888040342000
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c002a1f008 CR3: 00000000442ca000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (43):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/21 22:44 upstream d07de43e3f05 c6512ef7 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2025/03/15 10:53 upstream 83158b21ae9a e2826670 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2025/03/11 08:37 upstream 4d872d51bc9d 16256247 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2025/03/08 20:24 upstream 2a520073e74f 7e3bd60d .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2025/03/08 09:12 upstream 21e4543a2e2f 7e3bd60d .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2025/02/22 21:11 upstream ff202c5028a1 d34966d1 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2 (clean fs)] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2025/02/21 04:23 upstream e9a8cac0bf89 0808a665 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/10/15 14:52 upstream eca631b8fe80 b01b6661 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/11/03 23:08 upstream a33ab3f94f51 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: corrupted list in add_to_unbuddied
2025/02/21 12:09 upstream 27eddbf34490 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 BUG: corrupted list in add_to_unbuddied
2025/03/11 20:35 upstream 0b46b049d6ec 16256247 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2025/03/09 01:38 upstream b7c90e3e717a 163f510d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2025/03/07 16:02 upstream 00a7d39898c8 7e3bd60d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2025/03/03 15:55 upstream 7eb172143d55 c3901742 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2025/02/24 03:38 upstream d082ecbc71e9 d34966d1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2025/02/02 03:57 upstream 69e858e0b8b2 568559e4 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2025/01/23 19:49 upstream 21266b8df522 f6a35ef3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/10/26 17:07 upstream 850925a8133c 65e8686b .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/10/17 01:12 upstream c964ced77262 666f77ed .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/10/13 07:37 upstream 7234e2ea0edd 084d8178 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/10/11 06:56 upstream 1d227fcc7222 cd942402 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/10/04 21:52 upstream 0c559323bbaa d7906eff .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/10/04 13:11 upstream 3840cbe24cf0 d7906eff .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/10/04 03:59 upstream 3840cbe24cf0 d7906eff .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/10/03 21:42 upstream 7ec462100ef9 d7906eff .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/30 22:11 upstream 9852d85ec9d4 179f4029 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/30 22:06 upstream 9852d85ec9d4 179f4029 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/30 19:53 upstream 9852d85ec9d4 179f4029 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/30 17:12 upstream 9852d85ec9d4 179f4029 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/30 16:52 upstream 9852d85ec9d4 179f4029 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/30 15:46 upstream 9852d85ec9d4 179f4029 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/30 15:16 upstream 9852d85ec9d4 179f4029 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/30 15:13 upstream 9852d85ec9d4 179f4029 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/30 14:45 upstream 9852d85ec9d4 179f4029 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/30 13:58 upstream 9852d85ec9d4 179f4029 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/29 13:46 upstream 3efc57369a0c ba29ff75 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/23 17:37 upstream de5cb0dcb74c 49f9c2d2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/15 19:42 upstream d42f7708e27c 08d8a733 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/08 22:21 upstream 89f5e14d05b4 9750182a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/06 06:25 upstream ad618736883b 464ac2ed .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/04 19:43 upstream c7fb1692dc01 dfbe2ed4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/03 11:22 upstream 67784a74e258 8045124c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
2024/09/02 20:55 upstream 67784a74e258 0dd55198 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: corrupted list in add_to_unbuddied
* Struck through repros no longer work on HEAD.