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Sat, 12 Apr 2025 17:03:30 -0700 (PDT) Date: Sat, 12 Apr 2025 17:03:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67faff52.050a0220.379d84.001b.GAE@google.com> Subject: [syzbot] [mm?] WARNING in move_to_new_folio From: syzbot To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: F22D940006 X-Stat-Signature: 1zu54kkkbfmsf1d99jnxfunapqnfa5xc X-Rspam-User: X-HE-Tag: 1744502611-308858 X-HE-Meta: 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 OB9UIgdZ 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 MvVfVM4h Nk7NRH166JSINBYFKM497auic/d+YfsNnuOH01XQu4NylUxEzMKocU5z5pmRNzOj+DWyioz7EE7CV05b6qWw9dluGOFTt0Y8m5bFKadmw7ZBE1tESzSg+moFO/iivaKiQlQNVH9yL/khd7GIyPe61BVDVqSoURS4mob2tpKPnUANjsSWLCC/GSc0IrHFhin4ikYkNnko4RVNp/1RhACwYW0JKRRj8sJetGku1LpoQm66PLTyFTwAEoAGg1bZcDBTyy5UUaGo0xB9XcwkBtQU8irxiZSEQPi7OSYf2BuYQwT/zx5QM7cnUCOLDHnEitExW33UcvXxyW0JdBOEOosFTCdn9bq1IR79RdG2Q8mi7eqee8JpO7349xeciQLT7lXSpj7nxMguQ9LC9mblCL3L3nhj5Msvky1v X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot found the following issue on: HEAD commit: 01c6df60d5d4 Add linux-next specific files for 20250411 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=107b77e4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=db03cefa26ecf825 dashboard link: https://syzkaller.appspot.com/bug?extid=8bb6fd945af4e0ad9299 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/928246b3f3d5/disk-01c6df60.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/79a68c4e1134/vmlinux-01c6df60.xz kernel image: https://storage.googleapis.com/syzbot-assets/9caf8c293819/bzImage-01c6df60.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8bb6fd945af4e0ad9299@syzkaller.appspotmail.com ------------[ cut here ]------------ jfs_metapage_aops does not implement migrate_folio WARNING: CPU: 0 PID: 6870 at mm/migrate.c:955 fallback_migrate_folio mm/migrate.c:953 [inline] WARNING: CPU: 0 PID: 6870 at mm/migrate.c:955 move_to_new_folio+0x70e/0x840 mm/migrate.c:1007 Modules linked in: CPU: 0 UID: 0 PID: 6870 Comm: syz.3.196 Not tainted 6.15.0-rc1-next-20250411-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:fallback_migrate_folio mm/migrate.c:953 [inline] RIP: 0010:move_to_new_folio+0x70e/0x840 mm/migrate.c:1007 Code: b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 74 08 4c 89 e7 e8 73 2d fe ff 49 8b 34 24 48 c7 c7 00 8b 57 8c e8 d3 0b 53 ff 90 <0f> 0b 90 90 e9 0a fd ff ff e8 74 f6 93 ff 90 0f 0b 90 eb a7 e8 69 RSP: 0018:ffffc900045aeb30 EFLAGS: 00010246 RAX: d74fd979f2566d00 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000e489000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffea0000c98800 R08: ffffffff81829232 R09: 1ffff110170c4852 R10: dffffc0000000000 R11: ffffed10170c4853 R12: ffff8880612710a8 R13: 1ffff1100c24e215 R14: ffffffff8c839248 R15: ffff888061270f88 FS: 00007f855ea5e6c0(0000) GS:ffff888124f80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 000000003477c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: migrate_folio_move mm/migrate.c:1312 [inline] migrate_folios_move mm/migrate.c:1664 [inline] migrate_pages_batch+0x1e86/0x30b0 mm/migrate.c:1911 migrate_pages_sync mm/migrate.c:1968 [inline] migrate_pages+0x24f8/0x3470 mm/migrate.c:2050 compact_zone+0x365d/0x4dd0 mm/compaction.c:2689 compact_node mm/compaction.c:2958 [inline] compact_nodes mm/compaction.c:2980 [inline] sysctl_compaction_handler+0x498/0x9a0 mm/compaction.c:3031 proc_sys_call_handler+0x54b/0x820 fs/proc/proc_sysctl.c:601 iter_file_splice_write+0xbdf/0x1530 fs/splice.c:738 do_splice_from fs/splice.c:935 [inline] direct_splice_actor+0x11b/0x220 fs/splice.c:1158 splice_direct_to_actor+0x595/0xc90 fs/splice.c:1102 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0x281/0x3d0 fs/splice.c:1227 do_sendfile+0x582/0x8d0 fs/read_write.c:1368 __do_sys_sendfile64 fs/read_write.c:1423 [inline] __se_sys_sendfile64+0x102/0x1e0 fs/read_write.c:1415 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f855db8d169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f855ea5e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f855dda6080 RCX: 00007f855db8d169 RDX: 00002000000000c0 RSI: 0000000000000006 RDI: 0000000000000007 RBP: 00007f855dc0e990 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000009 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f855dda6080 R15: 00007ffe70b954f8 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup