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: 477d, last: 4h47m
▶ ▼ 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 syz, C 992 436d 478d 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: 314 at mm/page_alloc.c:5286 __alloc_pages_noprof+0x109/0x7e0 mm/page_alloc.c:5286
Modules linked in:
CPU: 0 UID: 0 PID: 314 Comm: syz-executor409 Not tainted syzkaller #0 ddbfd9edd557061ac399360ec6a3953dfb6172b5
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__alloc_pages_noprof+0x109/0x7e0 mm/page_alloc.c:5286
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 f5 d6 0b 06 00 0f 85 c2 00 00 00 c6 05 e8 d6 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:ffffc9000126f640 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000011 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000126f6f8
RBP: ffffc9000126f780 R08: ffffc9000126f6f7 R09: 0000000000000000
R10: ffffc9000126f6e0 R11: fffff5200024dedf R12: ffffc9000126f680
R13: dffffc0000000000 R14: 1ffff9200024decc R15: 0000000000000000
FS:  0000555590c7e3c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005605336d15c8 CR3: 0000000125764000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 ___kmalloc_large_node+0x81/0x220 mm/slub.c:-1
 __kmalloc_large_node_noprof+0x1e/0xd0 mm/slub.c:4367
 __do_kmalloc_node mm/slub.c:4383 [inline]
 __kmalloc_noprof+0x326/0x510 mm/slub.c:4407
 kmalloc_noprof include/linux/slab.h:886 [inline]
 kmalloc_array_noprof include/linux/slab.h:-1 [inline]
 hashtab_init+0xd6/0x1f0 security/selinux/ss/hashtab.c:43
 symtab_init+0x44/0x70 security/selinux/ss/symtab.c:45
 policydb_read+0x8e1/0x2860 security/selinux/ss/policydb.c:2583
 security_load_policy+0x16a/0x12d0 security/selinux/ss/services.c:2306
 sel_write_load+0x258/0x600 security/selinux/selinuxfs.c:579
 vfs_write+0x3c1/0xfd0 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: 0033:0x7fc67409e489
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 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 d8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd7c7d4a78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc674106156 RCX: 00007fc67409e489
RDX: 0000000000000065 RSI: 0000200000000280 RDI: 0000000000000003
RBP: 00007fc674106126 R08: 0000000000000006 R09: 0000000000000006
R10: 0000000000000006 R11: 0000000000000246 R12: 00007fc674107df0
R13: 00007fc67410608e R14: 00007fc674131bc0 R15: 0000000000000002
 </TASK>
---[ end trace 0000

Crashes (6766):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/25 19:29 android16-6.12 09f588c04484 f281d9d2 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/08/11 11:26 android16-6.12 42b03373f376 508909ea .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/06/20 09:41 android16-6.12 8f68185b8289 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/06/01 02:50 android16-6.12 34c0581154b9 6b4a8443 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
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
2026/10/09 19:59 android16-6.12 e65d894191a4 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/09 14:33 android16-6.12 e65d894191a4 b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/09 08:50 android16-6.12 e65d894191a4 b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/09 05:44 android16-6.12 e65d894191a4 b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/09 04:43 android16-6.12 e65d894191a4 b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/08 22:47 android16-6.12 e65d894191a4 b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/08 19:51 android16-6.12 e65d894191a4 b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/08 13:56 android16-6.12 c7ad8c94d619 4f6a9fcf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/08 09:25 android16-6.12 c7ad8c94d619 4f6a9fcf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/08 06:43 android16-6.12 c7ad8c94d619 4f6a9fcf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/08 03:41 android16-6.12 c7ad8c94d619 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/08 00:28 android16-6.12 7e73c6dc7aaf 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/07 23:20 android16-6.12 7e73c6dc7aaf 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/07 20:43 android16-6.12 7e73c6dc7aaf 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/07 19:34 android16-6.12 7e73c6dc7aaf 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/07 06:30 android16-6.12 85581c945c56 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/07 04:14 android16-6.12 85581c945c56 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/07 00:51 android16-6.12 02e193b62eb3 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/06 22:04 android16-6.12 02e193b62eb3 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/06 08:26 android16-6.12 31493cc8d965 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/06 07:19 android16-6.12 31493cc8d965 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/05 16:37 android16-6.12 3a7d1771d492 af63e995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/05 15:34 android16-6.12 3a7d1771d492 af63e995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/05 13:06 android16-6.12 3a7d1771d492 af63e995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/05 10:51 android16-6.12 3a7d1771d492 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/05 07:36 android16-6.12 3a7d1771d492 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/05 01:36 android16-6.12 3a7d1771d492 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/05 00:27 android16-6.12 3a7d1771d492 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/04 19:01 android16-6.12 3a7d1771d492 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/04 03:17 android16-6.12 3a7d1771d492 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/04 01:51 android16-6.12 3a7d1771d492 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/03 19:46 android16-6.12 3a7d1771d492 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/03 03:21 android16-6.12 3a7d1771d492 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/02 23:00 android16-6.12 3a7d1771d492 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/02 18:23 android16-6.12 3a7d1771d492 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/02 17:03 android16-6.12 3a7d1771d492 6d32eb1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/02 14:46 android16-6.12 3a7d1771d492 6d32eb1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/02 08:57 android16-6.12 3a7d1771d492 6d32eb1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/01 19:16 android16-6.12 f82d63769e69 f5cdae2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/01 17:41 android16-6.12 f82d63769e69 f5cdae2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/01 13:21 android16-6.12 f82d63769e69 f5cdae2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/01 10:22 android16-6.12 f82d63769e69 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/10/01 05:42 android16-6.12 dfd0de11e80f 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/09/30 16:13 android16-6.12 7b10fdf41f2b 7808aef4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/09/30 13:30 android16-6.12 7b10fdf41f2b 7808aef4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in hashtab_init
2026/09/30 11:02 android16-6.12 7b10fdf41f2b 7808aef4 .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.