syzbot


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: 160d, last: 13h40m
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [mm?] kernel BUG in z3fold_page_migrate 0 (2) 2024/09/15 10:56

Sample crash report:
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
 worker_thread+0x870/0xd30 kernel/workqueue.c:3398
 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
------------[ cut here ]------------
kernel BUG at mm/z3fold.c:1293!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 29 Comm: kcompactd1 Not tainted 6.14.0-rc1-syzkaller-00034-g92514ef226f5 #0
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+0xc22/0x1170 mm/z3fold.c:1293
Code: ff 48 89 ef 48 c7 c6 00 2b 18 8c e8 c8 65 d8 ff 90 0f 0b e8 20 51 8e ff 48 8b 7c 24 10 48 c7 c6 60 2b 18 8c e8 af 65 d8 ff 90 <0f> 0b 48 85 db 0f 85 83 00 00 00 0f 1f 44 00 00 e8 f9 50 8e ff e9
RSP: 0000:ffffc90000506c98 EFLAGS: 00010246
RAX: 8526fbdf0d53e400 RBX: 0000000000000000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8c0aa680 RDI: 0000000000000001
RBP: ffffea00010d3ec0 R08: ffffffff901b5177 R09: 1ffffffff2036a2e
R10: dffffc0000000000 R11: fffffbfff2036a2f R12: dffffc0000000000
R13: ffffffff8c182968 R14: 04fff00000010001 R15: 1ffffd400021a7d8
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0018bc120 CR3: 0000000043f24000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 move_to_new_folio+0x9a5/0xc20 mm/migrate.c:1071
 migrate_folio_move mm/migrate.c:1360 [inline]
 migrate_folios_move mm/migrate.c:1712 [inline]
 migrate_pages_batch+0x1e84/0x30b0 mm/migrate.c:1959
 migrate_pages_sync mm/migrate.c:2016 [inline]
 migrate_pages+0x2561/0x34a0 mm/migrate.c:2098
 compact_zone+0x33d5/0x4ae0 mm/compaction.c:2663
 compact_node+0x2de/0x460 mm/compaction.c:2932
 kcompactd+0x6cd/0x14b0 mm/compaction.c:3226
 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:z3fold_page_migrate+0xc22/0x1170 mm/z3fold.c:1293
Code: ff 48 89 ef 48 c7 c6 00 2b 18 8c e8 c8 65 d8 ff 90 0f 0b e8 20 51 8e ff 48 8b 7c 24 10 48 c7 c6 60 2b 18 8c e8 af 65 d8 ff 90 <0f> 0b 48 85 db 0f 85 83 00 00 00 0f 1f 44 00 00 e8 f9 50 8e ff e9
RSP: 0000:ffffc90000506c98 EFLAGS: 00010246
RAX: 8526fbdf0d53e400 RBX: 0000000000000000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8c0aa680 RDI: 0000000000000001
RBP: ffffea00010d3ec0 R08: ffffffff901b5177 R09: 1ffffffff2036a2e
R10: dffffc0000000000 R11: fffffbfff2036a2f R12: dffffc0000000000
R13: ffffffff8c182968 R14: 04fff00000010001 R15: 1ffffd400021a7d8
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00165b010 CR3: 0000000043f24000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (198):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2025/02/06 14:22 upstream 92514ef226f5 1e1faf27 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/01/27 00:23 upstream c2da8b3f914f 9fbd772e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in z3fold_page_migrate
2025/01/18 17:44 upstream 595523945be0 f2cb035c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream 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
2025/02/06 20:06 upstream 92514ef226f5 1e1faf27 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/05 11:53 upstream 5c8c229261f1 5896748e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/05 04:33 upstream 5c8c229261f1 5896748e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/04 09:53 upstream 0de63bb7d919 8f267cef .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/04 05:03 upstream 0de63bb7d919 8f267cef .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/04 02:44 upstream 0de63bb7d919 8f267cef .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/03 16:34 upstream 2014c95afece a21a8419 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/03 15:34 upstream 2014c95afece a21a8419 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/03 12:19 upstream 2014c95afece a21a8419 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/03 07:25 upstream 69e858e0b8b2 568559e4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/03 02:30 upstream 69e858e0b8b2 568559e4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/03 00:58 upstream 69e858e0b8b2 568559e4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/02 17:56 upstream 69e858e0b8b2 568559e4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/02 01:07 upstream 69e858e0b8b2 568559e4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/01 12:14 upstream 69e858e0b8b2 0dff8567 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/01 08:31 upstream 69e858e0b8b2 aa47157c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/02/01 02:59 upstream 69e858e0b8b2 aa47157c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/31 14:20 upstream 69e858e0b8b2 4c6ac32f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/30 23:14 upstream 72deda0abee6 e961d16c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/30 19:34 upstream 72deda0abee6 e961d16c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/30 01:40 upstream 805ba04cb7cc afe4eff5 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/29 07:40 upstream 805ba04cb7cc 865ef71e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/26 01:52 upstream b46c89c08f41 9fbd772e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/25 16:50 upstream b46c89c08f41 9fbd772e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/23 10:38 upstream 21266b8df522 9d4f14f8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/22 19:08 upstream c4b9570cfb63 9d4f14f8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/22 15:02 upstream c4b9570cfb63 25e17fd3 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/22 10:37 upstream c4b9570cfb63 da72ac06 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/22 09:53 upstream c4b9570cfb63 da72ac06 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/22 03:09 upstream 95ec54a420b8 da72ac06 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/18 22:14 upstream 595523945be0 f2cb035c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/12 15:27 upstream b62cef9a5c67 6dbc6a9b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/11 21:57 upstream b62cef9a5c67 6dbc6a9b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2025/01/09 15:53 upstream eea6e4b4dfb8 9220929f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2024/12/30 01:48 upstream 4099a71718b0 d3ccff63 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2024/12/29 11:01 upstream 059dd502b263 d3ccff63 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2024/12/29 01:30 upstream 059dd502b263 d3ccff63 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2024/12/28 07:59 upstream 8379578b11d5 d3ccff63 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2024/12/26 11:28 upstream 9b2ffa6148b1 d3ccff63 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2024/12/25 21:06 upstream 9b2ffa6148b1 444551c4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2024/12/21 13:37 upstream 499551201b5f d7f584ee .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2024/12/20 06:49 upstream 8faabc041a00 c87fa8a3 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2024/12/19 09:05 upstream c061cf420ded 1432fc84 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2024/12/18 03:54 upstream 59dbb9d81adf a0626d3a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2024/12/17 13:42 upstream f44d154d6e3d bc1a1b50 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in z3fold_page_migrate
2024/12/16 12:02 upstream 78d4f34e2115 eec85da6 .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.