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kernel BUG in binder_alloc_deferred_release (2)

Status: upstream: reported C repro on 2024/10/28 16:33
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+dee8aa54cb2f5a150f9e@syzkaller.appspotmail.com
First crash: 27d, last: 14d
Cause bisection: introduced by (bisect log) :
commit f8d112a4e657c65c888e6b8a8435ef61a66e4ab8
Author: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Fri Aug 30 04:00:54 2024 +0000

  mm/mmap: avoid zeroing vma tree in mmap_region()

Crash: kernel BUG in binder_alloc_deferred_release (log)
Repro: C syz .config
  
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [kernel?] kernel BUG in binder_alloc_deferred_release (2) 2 (6) 2024/11/04 17:32
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in binder_alloc_deferred_release kernel C done 4 883d 885d 22/28 fixed on 2023/02/24 13:50
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2024/11/04 16:26 30m liam.howlett@oracle.com git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable OK log
2024/10/29 11:21 23m hdanton@sina.com patch upstream OK log
▶ ▼ Cause bisection attempts (2)
Created Duration User Patch Repo Result
2024/11/04 11:37 4h42m bisect upstream OK (1) job log log
2024/10/25 15:11 2h31m bisect upstream error job log

Sample crash report:
------------[ cut here ]------------
kernel BUG at drivers/android/binder_alloc.c:897!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.12.0-rc4-syzkaller-00047-gc2ee9f594da8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events binder_deferred_func
RIP: 0010:binder_alloc_deferred_release+0x68c/0x820 drivers/android/binder_alloc.c:897
Code: 00 00 00 48 c7 c6 20 7f 8d 8c 48 c7 c7 e0 7c 8d 8c 44 8b 44 24 14 8b 4c 24 10 e8 ef fd bb f8 e9 56 ff ff ff e8 d5 4b dc f8 90 <0f> 0b e8 cd 4b dc f8 48 89 ef e8 05 46 9c f8 e9 21 ff ff ff e8 ab
RSP: 0018:ffffc900000e7b98 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880415e3220 RCX: ffffffff816b1a6d
RDX: ffff88801d6c0000 RSI: ffffffff88b1332b RDI: ffff8880415e3260
RBP: 0000000000000003 R08: 0000000000000001 R09: fffff5200001cf65
R10: 0000000000000003 R11: 0000000000000000 R12: ffff8880335c1860
R13: ffff8880335c1910 R14: ffff8880415e32c8 R15: ffff8880415e3000
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f005c851546 CR3: 0000000079838000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 binder_free_proc drivers/android/binder.c:5237 [inline]
 binder_proc_dec_tmpref drivers/android/binder.c:1559 [inline]
 binder_proc_dec_tmpref+0x291/0x590 drivers/android/binder.c:1552
 binder_deferred_release drivers/android/binder.c:6269 [inline]
 binder_deferred_func+0xeda/0x12e0 drivers/android/binder.c:6296
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:binder_alloc_deferred_release+0x68c/0x820 drivers/android/binder_alloc.c:897
Code: 00 00 00 48 c7 c6 20 7f 8d 8c 48 c7 c7 e0 7c 8d 8c 44 8b 44 24 14 8b 4c 24 10 e8 ef fd bb f8 e9 56 ff ff ff e8 d5 4b dc f8 90 <0f> 0b e8 cd 4b dc f8 48 89 ef e8 05 46 9c f8 e9 21 ff ff ff e8 ab
RSP: 0018:ffffc900000e7b98 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880415e3220 RCX: ffffffff816b1a6d
RDX: ffff88801d6c0000 RSI: ffffffff88b1332b RDI: ffff8880415e3260
RBP: 0000000000000003 R08: 0000000000000001 R09: fffff5200001cf65
R10: 0000000000000003 R11: 0000000000000000 R12: ffff8880335c1860
R13: ffff8880335c1910 R14: ffff8880415e32c8 R15: ffff8880415e3000
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f005c851546 CR3: 000000000df7c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/10/25 02:30 upstream c2ee9f594da8 9fc8fe02 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in binder_alloc_deferred_release
2024/11/07 05:39 upstream 7758b206117d df3dc63b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root kernel BUG in binder_alloc_deferred_release
2024/10/25 01:44 upstream c2ee9f594da8 9fc8fe02 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in binder_alloc_deferred_release
* Struck through repros no longer work on HEAD.