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: 227d, last: 4h23m
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 186d 227d 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: 1 PID: 382 at mm/page_alloc.c:5234 __alloc_pages_noprof+0x109/0x7e0 mm/page_alloc.c:5234
Modules linked in:
CPU: 1 UID: 0 PID: 382 Comm: syz.2.17 Not tainted syzkaller #0 9061d031fb6aa52dc43cfb6d93fe624fdff0548e
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 2a b1 0b 06 00 0f 85 c2 00 00 00 c6 05 1d b1 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:ffffc90000edf640 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000016 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90000edf6f8
RBP: ffffc90000edf780 R08: ffffc90000edf6f7 R09: 0000000000000000
R10: ffffc90000edf6e0 R11: fffff520001dbedf R12: ffffc90000edf680
R13: dffffc0000000000 R14: 1ffff920001dbecc R15: 0000000000000000
FS:  0000555592651500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000f000 CR3: 00000001159a4000 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+0x3c5/0xf90 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:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f68d059aeb9
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:00007ffe97cc2458 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f68d0815fa0 RCX: 00007f68d059aeb9
RDX: 000000000000ffaf RSI: 0000200000000000 RDI: 0000000000000003
RBP: 00007f68d0608c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f68d0815fac R14: 00007f68d0815fa0 R15: 00007f68d0815fa0
 </TASK>
---[ end trace 0000000000000000 ]---
SELinux: failed to load policy

Crashes (2368):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/27 19:06 android16-6.12 e6a38c6e04b8 9a514c2f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
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
2026/02/01 06:21 android16-6.12 c13babfee861 6b8752f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/02/01 00:57 android16-6.12 c13babfee861 6b8752f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 23:55 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 22:40 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 21:11 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 19:26 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 17:37 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 14:39 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 10:49 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 09:33 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 07:34 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 06:32 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 04:04 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 01:12 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/31 01:11 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/30 22:30 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/30 20:04 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/30 18:07 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/30 16:55 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/30 14:55 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/30 13:46 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/30 12:45 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/30 09:02 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/30 05:48 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/30 02:46 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/29 21:08 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/29 18:23 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/29 16:41 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/29 15:15 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/29 14:04 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/29 10:28 android16-6.12 bee827455b83 0adc945e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/29 08:57 android16-6.12 bee827455b83 0adc945e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/29 01:19 android16-6.12 bee827455b83 0adc945e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/28 22:06 android16-6.12 58f0d92c7966 004c195c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/28 17:26 android16-6.12 58f0d92c7966 004c195c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/28 14:49 android16-6.12 58f0d92c7966 004c195c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/28 10:33 android16-6.12 1c8fffa12a81 3029c699 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/28 07:46 android16-6.12 1c8fffa12a81 3029c699 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/28 04:23 android16-6.12 1c8fffa12a81 3029c699 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/27 22:08 android16-6.12 e6a38c6e04b8 9a514c2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/27 22:08 android16-6.12 e6a38c6e04b8 9a514c2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/27 20:40 android16-6.12 e6a38c6e04b8 9a514c2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/27 17:52 android16-6.12 e6a38c6e04b8 9a514c2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/27 16:35 android16-6.12 e6a38c6e04b8 9a514c2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/01/27 15:21 android16-6.12 e6a38c6e04b8 9a514c2f .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.