syzbot


WARNING in ib_unregister_device_queued

Status: fixed on 2020/09/16 22:51
Subsystems: rdma
[Documentation on labels]
Reported-by: syzbot+4088ed905e4ae2b0e13b@syzkaller.appspotmail.com
Fix commit: 0cb42c026583 RDMA/core: Fix bogus WARN_ON during ib_unregister_device_queued()
First crash: 1461d, last: 1445d
Discussions (5)
Title Replies (including bot) Last reply
[PATCH 5.8 000/464] 5.8.2-rc1 review 475 (475) 2020/08/19 06:11
[PATCH 5.4 000/270] 5.4.59-rc1 review 275 (275) 2020/08/18 22:37
[PATCH 5.7 000/393] 5.7.16-rc1 review 398 (398) 2020/08/18 22:36
Re: WARNING in ib_unregister_device_queued 1 (1) 2020/04/28 12:31
WARNING in ib_unregister_device_queued 1 (2) 2020/04/28 00:10

Sample crash report:
rdma_rxe: ignoring netdev event = 10 for netdevsim0
infiniband syz2: set down
------------[ cut here ]------------
WARNING: CPU: 1 PID: 9859 at drivers/infiniband/core/device.c:1565 ib_unregister_device_queued+0x122/0x160 drivers/infiniband/core/device.c:1565
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 9859 Comm: syz-executor.1 Not tainted 5.7.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x27b/0x2f0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 fixup_bug arch/x86/kernel/traps.c:170 [inline]
 do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:ib_unregister_device_queued+0x122/0x160 drivers/infiniband/core/device.c:1565
Code: fb e8 c2 a6 d4 fb 48 89 ef e8 5a a1 c1 fe 48 83 c4 08 5b 5d e9 af a6 d4 fb e8 aa a6 d4 fb 0f 0b e9 46 ff ff ff e8 9e a6 d4 fb <0f> 0b e9 6f ff ff ff 48 89 ef e8 bf 72 12 fc e9 16 ff ff ff 48 c7
RSP: 0018:ffffc90001d07290 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff888061224000 RCX: ffffc9000480a000
RDX: 0000000000040000 RSI: ffffffff859e8812 RDI: ffff888061224310
RBP: 0000000000000019 R08: ffff88809191e580 R09: ffffed100c2449bb
R10: ffff888061224dd3 R11: ffffed100c2449ba R12: 0000000000000006
R13: ffff8880609f4000 R14: 0000000000000000 R15: ffffffff8a44fe40
 rxe_notify+0x77/0xd0 drivers/infiniband/sw/rxe/rxe_net.c:605
 notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
 call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
 call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
 call_netdevice_notifiers net/core/dev.c:1974 [inline]
 rollback_registered_many+0x75c/0xe70 net/core/dev.c:8828
 rollback_registered+0xf2/0x1c0 net/core/dev.c:8873
 unregister_netdevice_queue net/core/dev.c:9969 [inline]
 unregister_netdevice_queue+0x1d7/0x2b0 net/core/dev.c:9962
 unregister_netdevice include/linux/netdevice.h:2725 [inline]
 nsim_destroy+0x35/0x60 drivers/net/netdevsim/netdev.c:330
 __nsim_dev_port_del+0x144/0x1e0 drivers/net/netdevsim/dev.c:934
 nsim_dev_port_del_all+0x86/0xe0 drivers/net/netdevsim/dev.c:947
 nsim_dev_reload_destroy+0x77/0x110 drivers/net/netdevsim/dev.c:1123
 nsim_dev_reload_down+0x6e/0xd0 drivers/net/netdevsim/dev.c:703
 devlink_reload+0xbd/0x3b0 net/core/devlink.c:2797
 devlink_nl_cmd_reload+0x6b6/0x7c0 net/core/devlink.c:2832
 genl_family_rcv_msg_doit net/netlink/genetlink.c:673 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:718 [inline]
 genl_rcv_msg+0x627/0xdf0 net/netlink/genetlink.c:735
 netlink_rcv_skb+0x15a/0x410 net/netlink/af_netlink.c:2469
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:746
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x6bf/0x7e0 net/socket.c:2362
 ___sys_sendmsg+0x100/0x170 net/socket.c:2416
 __sys_sendmsg+0xec/0x1b0 net/socket.c:2449
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45c829
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb3dedfac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004fcea0 RCX: 000000000045c829
RDX: 0000000000000000 RSI: 0000000020000800 RDI: 0000000000000005
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000090b R14: 00000000004cbb20 R15: 00007fb3dedfb6d4
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/05/07 19:37 net-old a811c1fa0a02 98cbd87b .config console log report ci-upstream-net-this-kasan-gce
2020/04/22 13:13 net-old b9663b7ca6ff 2e44d63e .config console log report ci-upstream-net-this-kasan-gce
* Struck through repros no longer work on HEAD.