syzbot


WARNING in incfs_realloc_mount_info

Status: premoderation: reported C repro on 2025/06/20 16:31
Bug presence: origin:downstream
[Documentation on labels]
Reported-by: syzbot+75ff1aecfbeeefb78736@syzkaller.appspotmail.com
First crash: 224d, last: 3h48m
Bug presence (3)
Date Name Commit Repro Result
2025/06/23 android16-6.12 (ToT) d9fd901baa98 C [report] WARNING in incfs_realloc_mount_info
2025/06/23 lts (merge base) 83b4161a63b8 C Didn't crash
2025/06/23 upstream (ToT) 86731a2a651e C Didn't crash
Last patch testing requests (2)
Created Duration User Patch Repo Result
2025/12/01 23:26 12m retest repro android16-6.12 error
2025/12/01 23:26 4m retest repro android16-6.12 error

Sample crash report:
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
------------[ cut here ]------------
WARNING: CPU: 0 PID: 382 at mm/page_alloc.c:5234 __alloc_pages_noprof+0x109/0x7e0 mm/page_alloc.c:5234
Modules linked in:
CPU: 0 UID: 0 PID: 382 Comm: syz.2.17 Not tainted syzkaller #0 bfede744b46277b76d69ebe6cb8c22209d769bcb
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__alloc_pages_noprof+0x109/0x7e0 mm/page_alloc.c:5234
Code: 00 0f 1f 44 00 00 83 fb 0b 72 28 b8 00 20 00 00 23 44 24 40 75 1d 80 3d ea a8 0b 06 00 0f 85 c2 00 00 00 c6 05 dd a8 0b 06 01 <0f> 0b 31 c0 e9 b4 00 00 00 83 fb 0a 0f 87 a9 00 00 00 44 8b 64 24
RSP: 0018:ffffc9000638f860 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 000000000000000b RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000638f918
RBP: ffffc9000638f988 R08: ffffc9000638f917 R09: 0000000000000000
R10: ffffc9000638f900 R11: fffff52000c71f23 R12: ffffc9000638f8a0
R13: dffffc0000000000 R14: 1ffff92000c71f10 R15: 0000000000000000
FS:  000055556e7c9500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000011602e000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 ___kmalloc_large_node+0x81/0x210 mm/slub.c:-1
 __kmalloc_large_node_noprof+0x1e/0xd0 mm/slub.c:4367
 __do_kmalloc_node mm/slub.c:4383 [inline]
 __kmalloc_noprof+0x326/0x500 mm/slub.c:4407
 kmalloc_noprof include/linux/slab.h:885 [inline]
 kzalloc_noprof include/linux/slab.h:1017 [inline]
 incfs_realloc_mount_info+0xa7/0x4d0 fs/incfs/data_mgmt.c:113
 incfs_alloc_mount_info+0x478/0x5f0 fs/incfs/data_mgmt.c:84
 incfs_mount_fs+0x3ca/0x970 fs/incfs/vfs.c:1854
 legacy_get_tree+0x103/0x1b0 fs/fs_context.c:662
 vfs_get_tree+0xa1/0x290 fs/super.c:1817
 do_new_mount+0x251/0xb30 fs/namespace.c:3557
 path_mount+0x682/0x1010 fs/namespace.c:3884
 do_mount fs/namespace.c:3897 [inline]
 __do_sys_mount fs/namespace.c:4107 [inline]
 __se_sys_mount+0x2bf/0x480 fs/namespace.c:4084
 __x64_sys_mount+0xc3/0xf0 fs/namespace.c:4084
 x64_sys_call+0x2021/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f18fe59acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff1ddb7d68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f18fe815fa0 RCX: 00007f18fe59acb9
RDX: 0000200000000140 RSI: 0000200000000100 RDI: 00002000000000c0
RBP: 00007f18fe608bf7 R08: 0000200000000800 R09: 0000000000000000
R10: 0000000001010040 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f18fe815fac R14: 00007f18fe815fa0 R15: 00007f18fe815fa0
 </TASK>
---[ end trace 0000000000000000 ]---
incfs: Error allocating mount info. -12
incfs: mount failed -12

Crashes (196):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/21 08:30 android16-6.12 f33ca06267f8 6f1aa2f9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/01 07:59 android16-6.12 389151e65c06 65a0eece .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/06/20 16:59 android16-6.12 6c1c18fcb8b7 804b3919 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/30 20:57 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/30 17:04 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/30 08:12 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/30 02:45 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/29 21:58 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/29 17:31 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/29 13:06 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/29 01:20 android16-6.12 bee827455b83 0adc945e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/28 19:56 android16-6.12 58f0d92c7966 004c195c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/27 22:22 android16-6.12 e6a38c6e04b8 9a514c2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/27 07:43 android16-6.12 0a08bd027b15 efb3e894 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/27 06:37 android16-6.12 0a08bd027b15 efb3e894 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/27 02:55 android16-6.12 0a08bd027b15 efb3e894 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/26 02:45 android16-6.12 9ca0fde2622c 55756628 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/25 11:41 android16-6.12 83c6be0e1efe 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/25 07:51 android16-6.12 83c6be0e1efe 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/24 00:39 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/23 13:38 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2026/01/21 07:19 android16-6.12 f33ca06267f8 6f1aa2f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/17 10:00 android16-6.12 0d6730ee6542 f7988ea4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/16 17:48 android16-6.12 0d6730ee6542 f7988ea4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/16 06:34 android16-6.12 0d6730ee6542 f7988ea4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/15 19:46 android16-6.12 0d6730ee6542 f7988ea4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/11 22:30 android16-6.12 0d6730ee6542 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/09 20:08 android16-6.12 0d6730ee6542 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/09 08:23 android16-6.12 0d6730ee6542 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/08 17:57 android16-6.12 0d6730ee6542 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/07 09:59 android16-6.12 0d6730ee6542 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/06 04:17 android16-6.12 0d6730ee6542 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/06 00:44 android16-6.12 0d6730ee6542 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/05 11:09 android16-6.12 0d6730ee6542 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/05 02:25 android16-6.12 0d6730ee6542 686bf657 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/04 16:28 android16-6.12 0d6730ee6542 686bf657 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/02 19:58 android16-6.12 0d6730ee6542 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/11/01 04:04 android16-6.12 0d6730ee6542 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/29 00:13 android16-6.12 0d6730ee6542 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/28 18:45 android16-6.12 0d6730ee6542 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/28 10:40 android16-6.12 0d6730ee6542 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/27 02:13 android16-6.12 0d6730ee6542 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/26 20:21 android16-6.12 0d6730ee6542 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/26 11:20 android16-6.12 0d6730ee6542 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/25 14:31 android16-6.12 0d6730ee6542 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/25 04:23 android16-6.12 0d6730ee6542 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/24 02:28 android16-6.12 0d6730ee6542 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/23 08:07 android16-6.12 0d6730ee6542 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/22 14:26 android16-6.12 0d6730ee6542 252fbbad .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/22 09:24 android16-6.12 0d6730ee6542 252fbbad .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
2025/10/21 08:12 android16-6.12 0d6730ee6542 9832ed61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in incfs_realloc_mount_info
* Struck through repros no longer work on HEAD.