syzbot


WARNING in kfree_rcu_work

Status: auto-obsoleted due to no activity on 2024/01/11 05:13
Reported-by: syzbot+8a34a2a8b94a9401347e@syzkaller.appspotmail.com
First crash: 415d, last: 415d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in kfree_rcu_work kernel C 1 730d 730d 0/28 auto-obsoleted due to no activity on 2023/03/21 15:38

Sample crash report:
------------[ cut here ]------------
ODEBUG: active_state not available (active state 0) object type: rcu_head hint: 0x0
WARNING: CPU: 0 PID: 4064 at lib/debugobjects.c:511 debug_print_object lib/debugobjects.c:508 [inline]
WARNING: CPU: 0 PID: 4064 at lib/debugobjects.c:511 debug_object_active_state+0x278/0x3e8 lib/debugobjects.c:965
Modules linked in:
CPU: 0 PID: 4064 Comm: kworker/0:8 Not tainted 5.15.133-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Workqueue: events kfree_rcu_work
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : debug_print_object lib/debugobjects.c:508 [inline]
pc : debug_object_active_state+0x278/0x3e8 lib/debugobjects.c:965
lr : debug_print_object lib/debugobjects.c:508 [inline]
lr : debug_object_active_state+0x278/0x3e8 lib/debugobjects.c:965
sp : ffff80001d1c7a00
x29: ffff80001d1c7a00 x28: 0000000000000000 x27: dfff800000000000
x26: ffff800011acabc0 x25: ffff0000c5ed8e00 x24: 0000000000000001
x23: 0000000000000000 x22: 0000000000000000 x21: ffff800018700000
x20: ffff800011acabc0 x19: 0000000000000000 x18: 1fffe000368fef8e
x17: 1fffe000368fef8e x16: ffff8000082ea5e4 x15: ffff80001499efe0
x14: 1ffff0000292006a x13: ffffffffffffffff x12: 0000000000000000
x11: ff8080000832c8d0 x10: 0000000000000000 x9 : f82a59abb203c700
x8 : f82a59abb203c700 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff800008045860
x2 : 0000000000000006 x1 : 0000000100000000 x0 : 0000000000000053
Call trace:
 debug_print_object lib/debugobjects.c:508 [inline]
 debug_object_active_state+0x278/0x3e8 lib/debugobjects.c:965
 debug_rcu_head_unqueue kernel/rcu/rcu.h:185 [inline]
 debug_rcu_bhead_unqueue kernel/rcu/tree.c:3175 [inline]
 kfree_rcu_work+0x250/0x6c0 kernel/rcu/tree.c:3274
 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
 worker_thread+0x910/0x1034 kernel/workqueue.c:2457
 kthread+0x37c/0x45c kernel/kthread.c:319
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
irq event stamp: 13180
hardirqs last  enabled at (13179): [<ffff800008268afc>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1338 [inline]
hardirqs last  enabled at (13179): [<ffff800008268afc>] finish_lock_switch+0xbc/0x1e8 kernel/sched/core.c:4780
hardirqs last disabled at (13180): [<ffff80001195f638>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:387
softirqs last  enabled at (13078): [<ffff800008370f54>] local_bh_enable+0xc/0x2c include/linux/bottom_half.h:31
softirqs last disabled at (13074): [<ffff800008370f28>] local_bh_disable+0xc/0x2c include/linux/bottom_half.h:18
---[ end trace a498e9a747efde31 ]---

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/10/03 05:12 linux-5.15.y b911329317b4 65faba36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in kfree_rcu_work
* Struck through repros no longer work on HEAD.