syzbot


WARNING: ODEBUG bug in __tcindex_destroy (2)

Status: upstream: reported C repro on 2022/03/27 10:47
Reported-by: syzbot+98f3b500ee7b494ab6d0@syzkaller.appspotmail.com
First crash: 820d, last: 494d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING: ODEBUG bug in __tcindex_destroy 1 1493d 1493d 0/1 auto-closed as invalid on 2020/09/20 21:29
Fix bisection attempts (4)
Created Duration User Patch Repo Result
2023/02/16 06:40 1h00m bisect fix linux-4.14.y job log (0) log
2022/09/21 03:21 23m bisect fix linux-4.14.y job log (0) log
2022/05/26 21:36 22m bisect fix linux-4.14.y job log (0) log
2022/04/26 21:04 29m bisect fix linux-4.14.y job log (0) log

Sample crash report:
batman_adv: batadv0: Interface activated: batadv_slave_1
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
ODEBUG: free active (active state 0) object type: rcu_head hint:           (null)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7 at lib/debugobjects.c:287 debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7 Comm: ksoftirqd/0 Not tainted 4.14.302-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967
RIP: 0010:debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
RSP: 0018:ffff8880b5417bc0 EFLAGS: 00010086
RAX: 0000000000000051 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff878bd020 RDI: ffffed1016a82f6e
RBP: ffffffff878b2140 R08: 0000000000000051 R09: 0000000000000000
R10: 0000000000000000 R11: ffff8880b54081c0 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880b0770040 R15: ffff8880b28ebf18
 __debug_check_no_obj_freed lib/debugobjects.c:747 [inline]
 debug_check_no_obj_freed+0x3b7/0x680 lib/debugobjects.c:776
 kfree+0xb9/0x250 mm/slab.c:3814
 __tcindex_destroy+0x2e/0x70 net/sched/cls_tcindex.c:253
 __rcu_reclaim kernel/rcu/rcu.h:195 [inline]
 rcu_do_batch kernel/rcu/tree.c:2699 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline]
 rcu_process_callbacks+0x780/0x1180 kernel/rcu/tree.c:2946
 __do_softirq+0x24d/0x9ff kernel/softirq.c:288
 run_ksoftirqd+0x50/0x1a0 kernel/softirq.c:670
 smpboot_thread_fn+0x5c1/0x920 kernel/smpboot.c:164
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406

======================================================

Crashes (27):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/01/17 02:57 linux-4.14.y c4215ee4771b a63719e7 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/08/22 03:21 linux-4.14.y b641242202ed 26a13b38 .config console log report syz C ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/07/17 06:43 linux-4.14.y 424a46ea058e 95cb00d1 .config console log report syz C ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/03/27 11:08 linux-4.14.y 004bfaafc45c 89bc8608 .config console log report syz C ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2023/01/17 06:37 linux-4.14.y c4215ee4771b a63719e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2023/01/17 02:27 linux-4.14.y c4215ee4771b a63719e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/10/29 12:43 linux-4.14.y 41f36d7859a7 899d812a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/10/12 20:47 linux-4.14.y 9d5c0b3a8e1a 16a9c9e0 .config console log report info [disk image] [vmlinux] ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/10/04 23:44 linux-4.14.y 9d5c0b3a8e1a eab8f949 .config console log report info [disk image] [vmlinux] ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/09/28 06:30 linux-4.14.y 4edbf74132a4 75c78242 .config console log report info [disk image] [vmlinux] ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/09/21 17:32 linux-4.14.y 4edbf74132a4 380f82fb .config console log report info [disk image] [vmlinux] ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/09/21 17:14 linux-4.14.y 4edbf74132a4 380f82fb .config console log report info [disk image] [vmlinux] ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/08/11 14:39 linux-4.14.y b641242202ed 787ed7e0 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/08/08 21:47 linux-4.14.y b641242202ed da700653 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/08/08 21:44 linux-4.14.y b641242202ed da700653 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/08/02 11:19 linux-4.14.y b641242202ed fef302b1 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/08/02 11:09 linux-4.14.y b641242202ed fef302b1 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/07/27 05:41 linux-4.14.y 9c3bf9cf362f ae971e66 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/07/17 06:20 linux-4.14.y 424a46ea058e 95cb00d1 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/06/28 07:48 linux-4.14.y f051383ef03b ef82eb2c .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/06/21 15:12 linux-4.14.y 84bae26850e3 0fc5c330 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/06/09 10:11 linux-4.14.y b8f3be299d51 0d5abf15 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/06/06 01:52 linux-4.14.y 501eec4f9e13 c8857892 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/06/06 01:42 linux-4.14.y 501eec4f9e13 c8857892 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/06/05 03:41 linux-4.14.y 501eec4f9e13 c8857892 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/06/05 02:56 linux-4.14.y 501eec4f9e13 c8857892 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
2022/03/27 10:46 linux-4.14.y 004bfaafc45c 89bc8608 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in __tcindex_destroy
* Struck through repros no longer work on HEAD.