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kernel BUG in z3fold_page_migrate

Status: upstream: reported syz repro on 2024/09/04 00:31
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+63f9ce7427394b75d9a3@syzkaller.appspotmail.com
First crash: 261d, last: 51d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [mm?] kernel BUG in z3fold_page_migrate 0 (2) 2024/09/15 10:56
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/04/11 16:47 16m retest repro upstream report log
2025/04/11 16:47 16m retest repro upstream report log
2025/04/11 16:47 17m retest repro upstream report log
2025/04/11 16:47 16m retest repro upstream report log
2025/04/11 16:47 16m retest repro upstream report log
2025/04/11 14:31 16m retest repro upstream report log
2025/04/11 14:31 16m retest repro upstream report log
2025/04/11 14:31 16m retest repro upstream report log
2025/04/11 14:31 16m retest repro upstream report log
2025/04/11 14:31 16m retest repro upstream report log

Sample crash report:
 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
------------[ cut here ]------------
kernel BUG at mm/z3fold.c:1293!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 30 Comm: kcompactd1 Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:z3fold_page_migrate+0xcf8/0x1240 mm/z3fold.c:1293
Code: ff 48 89 ef 48 c7 c6 e0 3f 38 8c e8 e2 cc d7 ff 90 0f 0b e8 ba 8b 8c ff 48 8b 7c 24 10 48 c7 c6 40 40 38 8c e8 c9 cc d7 ff 90 <0f> 0b 48 85 db 0f 85 83 00 00 00 0f 1f 44 00 00 e8 93 8b 8c ff e9
RSP: 0000:ffffc90000516c98 EFLAGS: 00010246
RAX: 2829296df1bc4c00 RBX: 0000000000000000 RCX: ffffffff933fc020
RDX: dffffc0000000000 RSI: ffffffff8e45b764 RDI: 0000000000000001
RBP: ffffea000119ba80 R08: ffffffff903cfd77 R09: 1ffffffff2079fae
R10: dffffc0000000000 R11: fffffbfff2079faf R12: dffffc0000000000
R13: ffffffff8c383e48 R14: 04fff00000010001 R15: 1ffffd4000233750
FS:  0000000000000000(0000) GS:ffff88808c824000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c002230340 CR3: 0000000012372000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 move_to_new_folio+0x9a9/0xc30 mm/migrate.c:1069
 migrate_folio_move mm/migrate.c:1358 [inline]
 migrate_folios_move mm/migrate.c:1710 [inline]
 migrate_pages_batch+0x1e86/0x30b0 mm/migrate.c:1957
 migrate_pages_sync mm/migrate.c:2014 [inline]
 migrate_pages+0x271c/0x36c0 mm/migrate.c:2096
 compact_zone+0x33f6/0x4b10 mm/compaction.c:2663
 compact_node+0x2e0/0x470 mm/compaction.c:2932
 kcompactd+0x903/0x1590 mm/compaction.c:3227
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:z3fold_page_migrate+0xcf8/0x1240 mm/z3fold.c:1293
Code: ff 48 89 ef 48 c7 c6 e0 3f 38 8c e8 e2 cc d7 ff 90 0f 0b e8 ba 8b 8c ff 48 8b 7c 24 10 48 c7 c6 40 40 38 8c e8 c9 cc d7 ff 90 <0f> 0b 48 85 db 0f 85 83 00 00 00 0f 1f 44 00 00 e8 93 8b 8c ff e9
RSP: 0000:ffffc90000516c98 EFLAGS: 00010246
RAX: 2829296df1bc4c00 RBX: 0000000000000000 RCX: ffffffff933fc020
RDX: dffffc0000000000 RSI: ffffffff8e45b764 RDI: 0000000000000001
RBP: ffffea000119ba80 R08: ffffffff903cfd77 R09: 1ffffffff2079fae
R10: dffffc0000000000 R11: fffffbfff2079faf R12: dffffc0000000000
R13: ffffffff8c383e48 R14: 04fff00000010001 R15: 1ffffd4000233750
FS:  0000000000000000(0000) GS:ffff88808c824000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0021d7c00 CR3: 0000000033c4c000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (354):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/26 03:20 upstream 2df0c02dab82 89d30d73 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/03/16 07:16 upstream eb88e6bfbc0a e2826670 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/03/09 12:09 upstream b7c90e3e717a 163f510d .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2 (corrupt fs)] [mounted in repro #3] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/03/08 19:42 upstream 2a520073e74f 7e3bd60d .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/03/01 06:36 upstream 276f98efb64a 67cf5345 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2 (corrupt fs)] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/02/25 18:11 upstream d082ecbc71e9 d34966d1 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in z3fold_page_migrate
2025/02/19 19:21 upstream 6537cfb395f3 cbd8edab .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/02/17 07:18 upstream ba643b6d8440 40a34ec9 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/02/16 13:54 upstream ad1b832bf1cf 40a34ec9 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (corrupt fs)] [mounted in repro #2 (corrupt fs)] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/02/13 09:09 upstream 4dc1d1bec898 2afad16e .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/02/08 19:41 upstream 8f6629c004b1 ef44b750 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2] [mounted in repro #3 (clean fs)] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/02/07 14:23 upstream bb066fe812d6 a4f327c2 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2 (corrupt fs)] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/02/06 05:03 upstream 92514ef226f5 577d049b .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/02/02 16:37 upstream 69e858e0b8b2 568559e4 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2024/11/06 05:32 upstream 2e1b3cc9d7f7 3a465482 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2024/09/15 10:55 upstream 0babf683783d 08d8a733 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/03/26 16:55 upstream 1e26c5e28ca5 19e40f48 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/03/25 01:02 upstream 38fec10eb60d 875573af .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/03/23 21:50 upstream 586de92313fc 4e8d3850 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in z3fold_page_migrate
2025/03/15 07:00 upstream 83158b21ae9a e2826670 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/03/09 07:46 upstream b7c90e3e717a 163f510d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2024/09/02 15:06 upstream 67784a74e258 1eda0d14 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2024/08/31 00:22 upstream fb24560f31f9 1eda0d14 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/03/28 12:31 upstream 4fa118e5b79f 6c09fb82 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/27 22:06 upstream 1a9239bb4253 928390c4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/27 10:35 upstream f6e0150b2003 20510e88 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/27 03:37 upstream f6e0150b2003 20510e88 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/26 21:58 upstream 1e26c5e28ca5 19e40f48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/26 19:06 upstream 1e26c5e28ca5 19e40f48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/26 15:37 upstream 1e26c5e28ca5 19e40f48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/26 14:06 upstream 1e26c5e28ca5 19e40f48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/26 10:59 upstream 1e26c5e28ca5 89d30d73 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/26 05:41 upstream 2df0c02dab82 89d30d73 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/26 04:14 upstream 2df0c02dab82 89d30d73 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/24 20:33 upstream 38fec10eb60d 875573af .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/24 16:14 upstream 38fec10eb60d 875573af .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/23 23:46 upstream 586de92313fc 875573af .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/22 20:58 upstream 88d324e69ea9 c6512ef7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/22 13:40 upstream 88d324e69ea9 c6512ef7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/22 12:18 upstream 88d324e69ea9 c6512ef7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/22 07:39 upstream d07de43e3f05 c6512ef7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/21 07:19 upstream b3ee1e460951 62330552 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/21 02:55 upstream 5fc319360819 62330552 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/19 15:47 upstream 81e4f8d68c66 8d0a2921 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/19 05:08 upstream 81e4f8d68c66 8d0a2921 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/17 13:01 upstream 4701f33a1070 948c34e4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/17 07:56 upstream 4701f33a1070 948c34e4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/17 06:08 upstream 4701f33a1070 948c34e4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/16 07:43 upstream eb88e6bfbc0a e2826670 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/15 04:41 upstream b35233e7bfa0 e2826670 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/15 02:49 upstream b35233e7bfa0 e2826670 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/14 22:46 upstream b35233e7bfa0 e2826670 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/14 03:55 upstream 4003c9e78778 e2826670 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/13 09:04 upstream b7f94fcf5546 44be8b44 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/12 09:36 upstream 0fed89a961ea ee70e6db .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/12 08:19 upstream 0fed89a961ea ee70e6db .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/12 07:15 upstream 0fed89a961ea ee70e6db .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/11 19:36 upstream 0b46b049d6ec f2eee6b3 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/11 17:07 upstream 4d872d51bc9d f2eee6b3 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/11 07:26 upstream 4d872d51bc9d 16256247 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/10 05:42 upstream 80e54e84911a 163f510d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/10 04:02 upstream 80e54e84911a 163f510d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/09 00:15 upstream b7c90e3e717a 163f510d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/08 22:47 upstream b7c90e3e717a 163f510d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/03/08 12:42 upstream 21e4543a2e2f 7e3bd60d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
* Struck through repros no longer work on HEAD.