syzbot


WARNING in hashtab_init

Status: premoderation: reported C repro on 2025/06/19 03:47
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+3c25d8ebf79dc6165434@syzkaller.appspotmail.com
First crash: 220d, last: 50m
Bug presence (2)
Date Name Commit Repro Result
2025/06/24 lts (merge base) e0e2f7824338 C [report] WARNING in hashtab_init
2025/06/24 upstream (ToT) 78f4e737a53e C [report] WARNING in hashtab_init
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in hashtab_init selinux -1 C 992 179d 220d 29/29 fixed on 2025/09/04 16:57
Last patch testing requests (3)
Created Duration User Patch Repo Result
2025/12/01 05:37 3m retest repro android16-6.12 error
2025/12/01 05:37 3m retest repro android16-6.12 error
2025/12/01 05:37 4m retest repro android16-6.12 error

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 383 at mm/page_alloc.c:5234 __alloc_pages_noprof+0x109/0x7e0 mm/page_alloc.c:5234
Modules linked in:
CPU: 0 UID: 0 PID: 383 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:ffffc90000eff640 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000016 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90000eff6f8
RBP: ffffc90000eff780 R08: ffffc90000eff6f7 R09: 0000000000000000
R10: ffffc90000eff6e0 R11: fffff520001dfedf R12: ffffc90000eff680
R13: dffffc0000000000 R14: 1ffff920001dfecc R15: 0000000000000000
FS:  00005555597e3500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000f000 CR3: 0000000116080000 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]
 kmalloc_array_noprof include/linux/slab.h:-1 [inline]
 hashtab_init+0xdb/0x1f0 security/selinux/ss/hashtab.c:43
 symtab_init+0x44/0x70 security/selinux/ss/symtab.c:45
 policydb_read+0x90e/0x28b0 security/selinux/ss/policydb.c:2583
 security_load_policy+0x16a/0x12d0 security/selinux/ss/services.c:2306
 sel_write_load+0x2a7/0x5f0 security/selinux/selinuxfs.c:604
 vfs_write+0x3c8/0xf90 fs/read_write.c:682
 ksys_write+0x145/0x260 fs/read_write.c:737
 __do_sys_write fs/read_write.c:749 [inline]
 __se_sys_write fs/read_write.c:746 [inline]
 __x64_sys_write+0x7f/0x90 fs/read_write.c:746
 x64_sys_call+0x271c/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:2
 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: 0033:0x7f3862b9acb9
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:00007ffe3283fbf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3862e15fa0 RCX: 00007f3862b9acb9
RDX: 000000000000fe59 RSI: 0000200000000000 RDI: 0000000000000003
RBP: 00007f3862c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3862e15fac R14: 00007f3862e15fa0 R15: 00007f3862e15fa0
 </TASK>
---[ end trace 0000000000000000 ]---
SELinux: failed to load policy

Crashes (2245):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/21 08:54 android16-6.12 f33ca06267f8 6f1aa2f9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2025/09/27 07:20 android16-6.12 e34340c0d860 001c9061 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2025/06/19 04:38 android16-6.12 30b14cdad458 ed3e87f7 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2025/06/19 04:16 android16-6.12 30b14cdad458 ed3e87f7 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/25 06:37 android16-6.12 83c6be0e1efe 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/25 04:25 android16-6.12 83c6be0e1efe 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/25 04:25 android16-6.12 83c6be0e1efe 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 22:41 android16-6.12 2f0f4b0a9a68 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 21:30 android16-6.12 2f0f4b0a9a68 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 19:13 android16-6.12 2f0f4b0a9a68 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 18:09 android16-6.12 2f0f4b0a9a68 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 16:50 android16-6.12 2f0f4b0a9a68 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 14:59 android16-6.12 2f0f4b0a9a68 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 13:53 android16-6.12 2f0f4b0a9a68 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 12:52 android16-6.12 2f0f4b0a9a68 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 09:38 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 08:08 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 07:59 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 06:56 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 05:43 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 04:34 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 03:29 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/24 01:55 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 21:26 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 17:45 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 16:37 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 14:42 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 14:19 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 13:01 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 10:18 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 08:34 android16-6.12 e75f33468e02 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 06:55 android16-6.12 e75f33468e02 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 05:38 android16-6.12 da606bc67c00 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 04:15 android16-6.12 da606bc67c00 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 03:06 android16-6.12 da606bc67c00 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 01:54 android16-6.12 da606bc67c00 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 01:45 android16-6.12 da606bc67c00 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/23 00:24 android16-6.12 da606bc67c00 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/22 22:39 android16-6.12 da606bc67c00 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/22 21:37 android16-6.12 da606bc67c00 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/22 19:50 android16-6.12 da606bc67c00 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/22 15:45 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/22 13:39 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/22 11:48 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/22 10:37 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/22 10:10 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/22 08:07 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2025/11/16 18:21 android16-6.12 0d6730ee6542 f7988ea4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
* Struck through repros no longer work on HEAD.