WARNING in process_one_work

Status: upstream: reported C repro on 2019/10/25 11:01
Reported-by: syzbot+9eafbfdb45d207faf7a5@syzkaller.appspotmail.com
First crash: 2483d, last: 2248d
Fix bisection the fix commit could be any of (bisect log):
  e0f8b8a65a47 Linux 4.14.170
  56dfe6252c68 Linux 4.14.188
   
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in process_one_work origin:upstream -1 syz error 291 107d 1243d 0/3 auto-obsoleted due to no activity on 2026/07/06 10:25
linux-4.19 WARNING in process_one_work (2) -1 1 1439d 1439d 0/1 auto-obsoleted due to no activity on 2023/01/02 02:07
linux-4.19 WARNING in process_one_work -1 syz, C done 9 1886d 2451d 1/1 fixed on 2021/07/14 12:04
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2023/01/26 18:32 12m retest repro linux-4.14.y report log
2022/09/08 08:27 9m retest repro linux-4.14.y report log
▶ ▼ Fix bisection attempts (4)
Created Duration User Patch Repo Result
2020/07/16 18:17 42m bisect fix linux-4.14.y OK (2) job log
2020/06/04 20:33 40m bisect fix linux-4.14.y OK (0) job log log
2020/05/05 19:51 41m bisect fix linux-4.14.y OK (0) job log log
2020/04/05 19:20 31m bisect fix linux-4.14.y OK (0) job log log

Sample crash report:
 do_setlink+0x99f/0x2c20 net/core/rtnetlink.c:2098
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5 at net/batman-adv/bat_iv_ogm.c:555 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:555 [inline]
WARNING: CPU: 0 PID: 5 at net/batman-adv/bat_iv_ogm.c:555 batadv_iv_send_outstanding_bat_ogm_packet+0x5a2/0x680 net/batman-adv/bat_iv_ogm.c:1797
Kernel panic - not syncing: panic_on_warn set ...

 rtnl_newlink+0x11a7/0x1700 net/core/rtnetlink.c:2660
 rtnetlink_rcv_msg+0x3da/0xb70 net/core/rtnetlink.c:4315
 netlink_rcv_skb+0x14f/0x3c0 net/netlink/af_netlink.c:2432
 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4327
 netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline]
 netlink_unicast+0x44d/0x650 net/netlink/af_netlink.c:1312
 netlink_sendmsg+0x7c4/0xc60 net/netlink/af_netlink.c:1877
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xce/0x110 net/socket.c:656
 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062
 __sys_sendmsg+0xb9/0x140 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2103
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4436e9
RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.170-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
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:batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:555 [inline]
RIP: 0010:batadv_iv_send_outstanding_bat_ogm_packet+0x5a2/0x680 net/batman-adv/bat_iv_ogm.c:1797
RSP: 0018:ffff8880a9cdfcc8 EFLAGS: 00010297
RAX: ffff8880a9cd2140 RBX: ffff8880a464cd48 RCX: ffff8880a9cd29c0
RDX: 0000000000000000 RSI: ffffffff87f84e60 RDI: ffff888091677ae8
RBP: ffff8880a9cdfd38 R08: 0000000000007133 R09: ffffffff89588218
R10: ffff8880a9cd29e8 R11: ffff8880a9cd2140 R12: ffff8880a39c5b00
R13: ffff8880a464cd00 R14: ffff8880954ae080 R15: ffff888091677a80
 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..

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/02/10 11:26 linux-4.14.y e0f8b8a65a47 35f5e45e .config console log report syz C ci2-linux-4-14
2020/06/16 18:17 linux-4.14.y b850307b279c 4ea9d964 .config console log report ci2-linux-4-14
2020/03/06 19:20 linux-4.14.y 78d697fc93f9 7fb694ef .config console log report ci2-linux-4-14
2020/02/10 10:08 linux-4.14.y e0f8b8a65a47 35f5e45e .config console log report ci2-linux-4-14
2020/01/01 17:05 linux-4.14.y 4c5bf01e16a7 25a0186e .config console log report ci2-linux-4-14
2019/11/25 19:37 linux-4.14.y 43598c571e7e 598ca6c8 .config console log report ci2-linux-4-14
2019/10/25 10:00 linux-4.14.y b98aebd29824 d01bb02a .config console log report ci2-linux-4-14
* Struck through repros no longer work on HEAD.