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Wed, 20 Nov 2024 03:33:30 -0800 (PST) Date: Wed, 20 Nov 2024 03:33:30 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <673dc90a.050a0220.363a1b.000e.GAE@google.com> Subject: [syzbot] [mm?] WARNING in _xfs_buf_alloc 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: rspam06 X-Rspamd-Queue-Id: 0B00640012 X-Stat-Signature: 5wnoikidf1gb54x39dsu7ih1h4dbtjf4 X-Rspam-User: X-HE-Tag: 1732102347-934058 X-HE-Meta: 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 N4yxwgRI 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 7ddr61ct L+7XZGvMPx1eKV9pse6l3191lNlsWXBRyovxDI/DWHeCf9j91S+BeOFuH2yJK4ldfXtKqLmftg5j5MnnK7Mmj8TpYISAtuWxKp1itVNOm2Gm5Pe/LVLSBl5XMBQPPR+4hPKQbkHvplJjfxdVm+NhzoAJucC42E9IJRznyqrA+J+gCRcs+cJZ2n5TA6HwrRf95XjyCW2+gonQyzEmR4y44YILg50fK2C5rWDbI9y7lCZHSPW3iPg5+NEXemUSDuRDuvFSvO9qrq+qxQAbYWwiohY1JMx9e8PcDQnknTHP4FgdElyq7f1MY5rdtSe5dbwaBvhdzFOd/8pTchl9138M833aCsgMTekEN007K3XbBamrKwzUr5bIGiITgxd2th7waMEyAxzaPaPVbz0rVzGJShbU5XnEZY4k 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: f868cd251776 Merge tag 'drm-fixes-2024-11-16' of https://g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12b63130580000 kernel config: https://syzkaller.appspot.com/x/.config?x=d2aeec8c0b2e420c dashboard link: https://syzkaller.appspot.com/bug?extid=c39db87bae940bc2459a 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 (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-f868cd25.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/b5c59c5802c4/vmlinux-f868cd25.xz kernel image: https://storage.googleapis.com/syzbot-assets/3f0ca6449a50/bzImage-f868cd25.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c39db87bae940bc2459a@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 75 at mm/page_alloc.c:4238 __alloc_pages_slowpath+0xfc1/0x1020 mm/page_alloc.c:4238 Modules linked in: CPU: 0 UID: 0 PID: 75 Comm: kswapd0 Not tainted 6.12.0-rc7-syzkaller-00187-gf868cd251776 #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:__alloc_pages_slowpath+0xfc1/0x1020 mm/page_alloc.c:4238 Code: 25 c0 d7 03 00 49 83 c7 2c 4c 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 53 41 f6 47 01 08 44 8b 7c 24 2c 0f 84 3a f1 ff ff 90 <0f> 0b 90 e9 31 f1 ff ff 48 8d 8c 24 10 01 00 00 80 e1 07 80 c1 03 RSP: 0018:ffffc90000e3e640 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000001048cd0 RCX: ffffc90000e3e703 RDX: ffffc90000e3e840 RSI: 0000000000000000 RDI: ffffc90000e3e720 RBP: ffffc90000e3e7d0 R08: ffff88805ffd7357 R09: 1ffff1100bffae6a R10: dffffc0000000000 R11: ffffed100bffae6b R12: 1ffff920001c7ce0 R13: 0000000001048cd0 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555587ae95f8 CR3: 000000003f0fa000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __alloc_pages_noprof+0x493/0x710 mm/page_alloc.c:4763 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 alloc_slab_page+0x6a/0x140 mm/slub.c:2412 allocate_slab+0x1c0/0x2f0 mm/slub.c:2586 new_slab mm/slub.c:2631 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818 __slab_alloc+0x58/0xa0 mm/slub.c:3908 __slab_alloc_node mm/slub.c:3961 [inline] slab_alloc_node mm/slub.c:4122 [inline] kmem_cache_alloc_noprof+0x1c1/0x2a0 mm/slub.c:4141 _xfs_buf_alloc+0x5d/0xd80 fs/xfs/xfs_buf.c:231 xfs_buf_find_insert+0xe9/0x1540 fs/xfs/xfs_buf.c:639 xfs_buf_get_map+0x149c/0x1ae0 fs/xfs/xfs_buf.c:758 xfs_buf_read_map+0x111/0xa60 fs/xfs/xfs_buf.c:863 xfs_trans_read_buf_map+0x260/0xad0 fs/xfs/xfs_trans_buf.c:289 xfs_trans_read_buf fs/xfs/xfs_trans.h:212 [inline] xfs_qm_dqflush+0x2ed/0x15e0 fs/xfs/xfs_dquot.c:1267 xfs_qm_dquot_isolate+0xa89/0x13f0 fs/xfs/xfs_qm.c:465 __list_lru_walk_one+0x236/0x660 mm/list_lru.c:234 list_lru_walk_one+0xa6/0xe0 mm/list_lru.c:282 list_lru_shrink_walk include/linux/list_lru.h:228 [inline] xfs_qm_shrink_scan+0x1e1/0x400 fs/xfs/xfs_qm.c:519 do_shrink_slab+0x701/0x1160 mm/shrinker.c:437 shrink_slab+0x1093/0x14d0 mm/shrinker.c:664 shrink_one+0x43b/0x850 mm/vmscan.c:4824 shrink_many mm/vmscan.c:4885 [inline] lru_gen_shrink_node mm/vmscan.c:4963 [inline] shrink_node+0x3791/0x3e20 mm/vmscan.c:5943 kswapd_shrink_node mm/vmscan.c:6771 [inline] balance_pgdat mm/vmscan.c:6963 [inline] kswapd+0x1ca9/0x3700 mm/vmscan.c:7232 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 --- 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