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Sat, 30 Aug 2025 18:38:33 -0700 (PDT) Date: Sat, 30 Aug 2025 18:38:33 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68b3a799.a00a0220.1337b0.0029.GAE@google.com> Subject: [syzbot] [mm?] WARNING in new_slab (2) From: syzbot To: akpm@linux-foundation.org, apopple@nvidia.com, byungchul@sk.com, david@redhat.com, gourry@gourry.net, joshua.hahnjy@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, matthew.brost@intel.com, rakie.kim@sk.com, syzkaller-bugs@googlegroups.com, ying.huang@linux.alibaba.com, ziy@nvidia.com Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: 8p44rw81bzahoc8yujdu9xfs56ft7rf8 X-Rspam-User: X-Rspamd-Queue-Id: 27D341C0002 X-Rspamd-Server: rspam05 X-HE-Tag: 1756604313-845997 X-HE-Meta: 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 bNc0ya30 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 hsXz3Pgp 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 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: fab1beda7597 Merge tag 'devicetree-fixes-for-6.17-1' of gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16ad77bc580000 kernel config: https://syzkaller.appspot.com/x/.config?x=fecbb496f75d3d61 dashboard link: https://syzkaller.appspot.com/bug?extid=2f3c8569e4b7486452ae compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-fab1beda.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/813fdba24db0/vmlinux-fab1beda.xz kernel image: https://storage.googleapis.com/syzbot-assets/12a740d2c9a6/bzImage-fab1beda.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2f3c8569e4b7486452ae@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 10417 at mm/page_alloc.c:4619 __alloc_pages_slowpath mm/page_alloc.c:4619 [inline] WARNING: CPU: 1 PID: 10417 at mm/page_alloc.c:4619 __alloc_frozen_pages_noprof+0x1f21/0x23f0 mm/page_alloc.c:5161 Modules linked in: CPU: 1 UID: 0 PID: 10417 Comm: syz.1.1147 Not tainted syzkaller #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:__alloc_pages_slowpath mm/page_alloc.c:4619 [inline] RIP: 0010:__alloc_frozen_pages_noprof+0x1f21/0x23f0 mm/page_alloc.c:5161 Code: 90 0f 0b 90 e9 0d f9 ff ff e8 bb d6 0c 00 e9 43 f1 ff ff 4c 89 ff e8 ae d6 0c 00 e9 1e f1 ff ff 90 0f 0b 90 e9 3b fb ff ff 90 <0f> 0b 90 e9 24 fb ff ff 89 b4 24 90 00 00 00 48 89 54 24 50 e8 56 RSP: 0018:ffffc90003a477f8 EFLAGS: 00010202 RAX: 0000000000008000 RBX: 0000000000000000 RCX: ffffc90003a4792c RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88803fffd9b8 RBP: 0000000000048cc0 R08: 0000000000004f8b R09: 00000000000043f1 R10: 0000000000000000 R11: ffffc90003a47920 R12: ffff88803fffbb80 R13: 1ffff92000748f14 R14: 0000000000000000 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880975c3000(0063) knlGS:00000000f5484b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000326f2ffc CR3: 0000000070630000 CR4: 0000000000352ef0 Call Trace: alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2416 alloc_slab_page mm/slub.c:2487 [inline] allocate_slab mm/slub.c:2663 [inline] new_slab+0x265/0x330 mm/slub.c:2709 ___slab_alloc+0xcf2/0x1740 mm/slub.c:3891 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3981 __slab_alloc_node mm/slub.c:4056 [inline] slab_alloc_node mm/slub.c:4217 [inline] __kmalloc_cache_noprof+0xfb/0x3e0 mm/slub.c:4391 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] xfs_init_fs_context+0x45/0x5e0 fs/xfs/xfs_super.c:2278 alloc_fs_context+0x54d/0x9c0 fs/fs_context.c:318 do_new_mount fs/namespace.c:3787 [inline] path_mount+0xbdd/0x2000 fs/namespace.c:4123 do_mount fs/namespace.c:4136 [inline] __do_sys_mount fs/namespace.c:4347 [inline] __se_sys_mount fs/namespace.c:4324 [inline] __ia32_sys_mount+0x28b/0x310 fs/namespace.c:4324 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0x7c/0x3a0 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7fa4579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f548455c EFLAGS: 00000296 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 0000000080000140 RCX: 0000000080000040 RDX: 0000000080000080 RSI: 0000000002208004 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi --- 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