Hello,
syzbot found the following crash on:
HEAD commit: fbc5fe7a Linux 4.14.157
git tree: linux-4.14.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=16f20cdee00000
kernel config:
https://syzkaller.appspot.com/x/.config?x=253d29a660cb0d
dashboard link:
https://syzkaller.appspot.com/bug?extid=16cf37a0745aa9905815
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by:
syzbot+16cf37...@syzkaller.appspotmail.com
ODEBUG: assert_init not available (active state 0) object type: timer_list
hint: (null)
------------[ cut here ]------------
WARNING: CPU: 1 PID: 74 at lib/debugobjects.c:287
debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 74 Comm: kworker/u4:2 Not tainted 4.14.157-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Workqueue: tipc_send tipc_send_work
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x142/0x197 lib/dump_stack.c:58
panic+0x1f9/0x42d kernel/panic.c:183
__warn.cold+0x2f/0x2f kernel/panic.c:547
report_bug+0x216/0x254 lib/bug.c:186
fixup_bug arch/x86/kernel/traps.c:177 [inline]
fixup_bug arch/x86/kernel/traps.c:172 [inline]
do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
RSP: 0018:ffff8880a994f9d8 EFLAGS: 00010286
RAX: 0000000000000061 RBX: 0000000000000005 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff86cc2f80 RDI: ffffed1015329f31
RBP: ffff8880a994fa00 R08: 0000000000000061 R09: ffff8880a993ecf0
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff86cbe260
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88808677ef18
debug_object_assert_init lib/debugobjects.c:656 [inline]
debug_object_assert_init+0x22f/0x300 lib/debugobjects.c:627
debug_timer_assert_init kernel/time/timer.c:707 [inline]
debug_assert_init kernel/time/timer.c:755 [inline]
del_timer+0x67/0xf0 kernel/time/timer.c:1150
tipc_subscrb_subscrp_delete+0x16a/0x3b0 net/tipc/subscr.c:207
tipc_subscrb_delete net/tipc/subscr.c:238 [inline]
tipc_subscrb_release_cb+0x18/0x40 net/tipc/subscr.c:316
tipc_close_conn+0x176/0x230 net/tipc/server.c:203
tipc_send_to_sock net/tipc/server.c:538 [inline]
tipc_send_work+0x494/0x5c0 net/tipc/server.c:564
process_one_work+0x863/0x1600 kernel/workqueue.c:2114
worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
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