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: 334d, last: 1h04m
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 293d 335d 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: 384 at mm/page_alloc.c:5282 __alloc_pages_noprof+0x109/0x7e0 mm/page_alloc.c:5282
Modules linked in:
CPU: 1 UID: 0 PID: 384 Comm: syz.2.17 Not tainted syzkaller #0 b5d1f910cc847ce688c7bf76c712bd63cabf6003
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__alloc_pages_noprof+0x109/0x7e0 mm/page_alloc.c:5282
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 d2 48 0c 06 00 0f 85 c2 00 00 00 c6 05 c5 48 0c 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:ffffc9000638f560 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000015 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000638f618
RBP: ffffc9000638f6a0 R08: ffffc9000638f617 R09: 0000000000000000
R10: ffffc9000638f600 R11: fffff52000c71ec3 R12: ffffc9000638f5a0
R13: dffffc0000000000 R14: 1ffff92000c71eb0 R15: 0000000000000000
FS:  000055558d79c500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000019000 CR3: 0000000116c08000 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
 common_read+0x1e6/0x490 security/selinux/ss/policydb.c:1169
 policydb_read+0xab8/0x28b0 security/selinux/ss/policydb.c:2594
 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:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f1c26b9cdd9
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:00007fffc951dac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1c26e15fa0 RCX: 00007f1c26b9cdd9
RDX: 00000000000190ec RSI: 0000200000000000 RDI: 0000000000000003
RBP: 00007f1c26c32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1c26e15fac R14: 00007f1c26e15fa0 R15: 00007f1c26e15fa0
 </TASK>
---[ end trace 0000000000000000 ]---
SELinux: failed to load policy

Crashes (4687):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/07 23:52 android16-6.12 ca96d08337a8 cbf9e0fc .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/04 22:31 android16-6.12 ea1f41c3bdb9 a898ba9c .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
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
2026/05/19 15:38 android16-6.12 be343ff665e2 223544dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/19 13:19 android16-6.12 be343ff665e2 223544dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/19 11:34 android16-6.12 be343ff665e2 223544dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/19 09:46 android16-6.12 be343ff665e2 9f74d399 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/19 08:28 android16-6.12 be343ff665e2 9f74d399 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/19 06:17 android16-6.12 be343ff665e2 9f74d399 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/19 04:33 android16-6.12 be343ff665e2 9f74d399 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/19 03:12 android16-6.12 be343ff665e2 9f74d399 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/19 01:29 android16-6.12 be343ff665e2 9f74d399 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/19 00:20 android16-6.12 be343ff665e2 9f74d399 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/18 16:56 android16-6.12 be343ff665e2 55156e84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/18 15:43 android16-6.12 be343ff665e2 55156e84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/18 14:04 android16-6.12 be343ff665e2 55156e84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/18 14:00 android16-6.12 be343ff665e2 55156e84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/18 11:49 android16-6.12 be343ff665e2 55156e84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/18 05:30 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/18 03:16 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/18 02:08 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/17 23:27 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/17 22:05 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/17 20:57 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/17 19:10 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/17 16:46 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/17 09:42 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/17 09:27 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/17 07:31 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/17 06:23 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/17 04:00 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/17 02:32 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/16 21:44 android16-6.12 be343ff665e2 de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/16 19:45 android16-6.12 be343ff665e2 a15a64a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/16 18:08 android16-6.12 be343ff665e2 a15a64a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/16 16:21 android16-6.12 be343ff665e2 a15a64a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/16 14:37 android16-6.12 be343ff665e2 a15a64a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/16 13:34 android16-6.12 be343ff665e2 a15a64a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/16 11:46 android16-6.12 be343ff665e2 a15a64a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/16 07:35 android16-6.12 a5b3d3ca31af 81fb92f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/16 05:00 android16-6.12 a5b3d3ca31af 81fb92f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/16 03:43 android16-6.12 a5b3d3ca31af 81fb92f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/15 23:23 android16-6.12 a5b3d3ca31af 81fb92f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/15 19:22 android16-6.12 bb3ee689d837 9cd3beaa .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/15 17:16 android16-6.12 bb3ee689d837 9cd3beaa .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/15 16:05 android16-6.12 bb3ee689d837 9cd3beaa .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/15 07:22 android16-6.12 20cf7b36edc7 6ccb967e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/05/15 05:45 android16-6.12 20cf7b36edc7 6ccb967e .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.