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Subject[syzbot] [rdma?] INFO: trying to register non-static key in skb_dequeue (2)
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Hello,

syzbot found the following issue on:

HEAD commit: 348551ddaf31 Merge tag 'pinctrl-v6.4-1' of git://git.kerne..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1375fdf8280000
kernel config: https://syzkaller.appspot.com/x/.config?x=35e09b26aabb80e5
dashboard link: https://syzkaller.appspot.com/bug?extid=eba589d8f49c73d356da
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/adddf809a67d/disk-348551dd.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/266c56354fa2/vmlinux-348551dd.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e0fc2088acd1/bzImage-348551dd.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+eba589d8f49c73d356da@syzkaller.appspotmail.com

infiniband syz2: set active
infiniband syz2: added bond_slave_1
INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 1 PID: 31038 Comm: syz-executor.3 Not tainted 6.3.0-syzkaller-12728-g348551ddaf31 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
assign_lock_key kernel/locking/lockdep.c:982 [inline]
register_lock_class+0xdb6/0x1120 kernel/locking/lockdep.c:1295
__lock_acquire+0x10a/0x5df0 kernel/locking/lockdep.c:4951
lock_acquire kernel/locking/lockdep.c:5691 [inline]
lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5656
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3d/0x60 kernel/locking/spinlock.c:162
skb_dequeue+0x20/0x180 net/core/skbuff.c:3631
drain_resp_pkts drivers/infiniband/sw/rxe/rxe_comp.c:555 [inline]
rxe_completer+0x250d/0x3cc0 drivers/infiniband/sw/rxe/rxe_comp.c:652
rxe_qp_do_cleanup+0x1be/0x820 drivers/infiniband/sw/rxe/rxe_qp.c:761
execute_in_process_context+0x3b/0x150 kernel/workqueue.c:3473
__rxe_cleanup+0x21e/0x370 drivers/infiniband/sw/rxe/rxe_pool.c:233
rxe_create_qp+0x3f6/0x5f0 drivers/infiniband/sw/rxe/rxe_verbs.c:583
create_qp+0x5ac/0x970 drivers/infiniband/core/verbs.c:1235
ib_create_qp_kernel+0xa1/0x310 drivers/infiniband/core/verbs.c:1346
ib_create_qp include/rdma/ib_verbs.h:3743 [inline]
create_mad_qp+0x177/0x380 drivers/infiniband/core/mad.c:2905
ib_mad_port_open drivers/infiniband/core/mad.c:2986 [inline]
ib_mad_init_device+0xf40/0x1a90 drivers/infiniband/core/mad.c:3077
add_client_context+0x405/0x5e0 drivers/infiniband/core/device.c:721
enable_device_and_get+0x1cd/0x3b0 drivers/infiniband/core/device.c:1332
ib_register_device drivers/infiniband/core/device.c:1420 [inline]
ib_register_device+0x8b1/0xbc0 drivers/infiniband/core/device.c:1366
rxe_register_device+0x302/0x3e0 drivers/infiniband/sw/rxe/rxe_verbs.c:1485
rxe_net_add+0x90/0xf0 drivers/infiniband/sw/rxe/rxe_net.c:527
rxe_newlink+0xf0/0x1b0 drivers/infiniband/sw/rxe/rxe.c:197
nldev_newlink+0x332/0x5e0 drivers/infiniband/core/nldev.c:1731
rdma_nl_rcv_msg+0x371/0x6a0 drivers/infiniband/core/netlink.c:195
rdma_nl_rcv_skb.constprop.0.isra.0+0x2fc/0x440 drivers/infiniband/core/netlink.c:239
netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365
netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1913
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg+0xde/0x190 net/socket.c:747
____sys_sendmsg+0x71c/0x900 net/socket.c:2503
___sys_sendmsg+0x110/0x1b0 net/socket.c:2557
__sys_sendmsg+0xf7/0x1c0 net/socket.c:2586
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7feddf48c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fede029f168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007feddf5abf80 RCX: 00007feddf48c169
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003
RBP: 00007feddf4e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe1bb3e01f R14: 00007fede029f300 R15: 0000000000022000
</TASK>
general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 1 PID: 31038 Comm: syz-executor.3 Not tainted 6.3.0-syzkaller-12728-g348551ddaf31 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:flush_send_queue drivers/infiniband/sw/rxe/rxe_comp.c:597 [inline]
RIP: 0010:rxe_completer+0x255c/0x3cc0 drivers/infiniband/sw/rxe/rxe_comp.c:653
Code: 80 3c 02 00 0f 85 81 10 00 00 49 8b af 88 03 00 00 48 8d 45 30 48 89 c2 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 83 11 00 00 48 8d 45 2c 44 8b
RSP: 0018:ffffc90003526938 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffffed100e3fe800 RCX: ffffc9000b403000
RDX: 0000000000000006 RSI: ffffffff877e467a RDI: ffff888071ff4388
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: fffffbfff1cf3682 R11: fffffffffffda5b0 R12: ffff888071ff41a0
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888071ff4000
FS: 00007fede029f700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d822000 CR3: 000000002c7e6000 CR4: 00000000003506e0
Call Trace:
<TASK>
rxe_qp_do_cleanup+0x1be/0x820 drivers/infiniband/sw/rxe/rxe_qp.c:761
execute_in_process_context+0x3b/0x150 kernel/workqueue.c:3473
__rxe_cleanup+0x21e/0x370 drivers/infiniband/sw/rxe/rxe_pool.c:233
rxe_create_qp+0x3f6/0x5f0 drivers/infiniband/sw/rxe/rxe_verbs.c:583
create_qp+0x5ac/0x970 drivers/infiniband/core/verbs.c:1235
ib_create_qp_kernel+0xa1/0x310 drivers/infiniband/core/verbs.c:1346
ib_create_qp include/rdma/ib_verbs.h:3743 [inline]
create_mad_qp+0x177/0x380 drivers/infiniband/core/mad.c:2905
ib_mad_port_open drivers/infiniband/core/mad.c:2986 [inline]
ib_mad_init_device+0xf40/0x1a90 drivers/infiniband/core/mad.c:3077
add_client_context+0x405/0x5e0 drivers/infiniband/core/device.c:721
enable_device_and_get+0x1cd/0x3b0 drivers/infiniband/core/device.c:1332
ib_register_device drivers/infiniband/core/device.c:1420 [inline]
ib_register_device+0x8b1/0xbc0 drivers/infiniband/core/device.c:1366
rxe_register_device+0x302/0x3e0 drivers/infiniband/sw/rxe/rxe_verbs.c:1485
rxe_net_add+0x90/0xf0 drivers/infiniband/sw/rxe/rxe_net.c:527
rxe_newlink+0xf0/0x1b0 drivers/infiniband/sw/rxe/rxe.c:197
nldev_newlink+0x332/0x5e0 drivers/infiniband/core/nldev.c:1731
rdma_nl_rcv_msg+0x371/0x6a0 drivers/infiniband/core/netlink.c:195
rdma_nl_rcv_skb.constprop.0.isra.0+0x2fc/0x440 drivers/infiniband/core/netlink.c:239
netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365
netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1913
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg+0xde/0x190 net/socket.c:747
____sys_sendmsg+0x71c/0x900 net/socket.c:2503
___sys_sendmsg+0x110/0x1b0 net/socket.c:2557
__sys_sendmsg+0xf7/0x1c0 net/socket.c:2586
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7feddf48c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fede029f168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007feddf5abf80 RCX: 00007feddf48c169
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003
RBP: 00007feddf4e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe1bb3e01f R14: 00007fede029f300 R15: 0000000000022000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:flush_send_queue drivers/infiniband/sw/rxe/rxe_comp.c:597 [inline]
RIP: 0010:rxe_completer+0x255c/0x3cc0 drivers/infiniband/sw/rxe/rxe_comp.c:653
Code: 80 3c 02 00 0f 85 81 10 00 00 49 8b af 88 03 00 00 48 8d 45 30 48 89 c2 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 83 11 00 00 48 8d 45 2c 44 8b
RSP: 0018:ffffc90003526938 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffffed100e3fe800 RCX: ffffc9000b403000
RDX: 0000000000000006 RSI: ffffffff877e467a RDI: ffff888071ff4388
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: fffffbfff1cf3682 R11: fffffffffffda5b0 R12: ffff888071ff41a0
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888071ff4000
FS: 00007fede029f700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d822000 CR3: 000000002c7e6000 CR4: 00000000003506e0
----------------
Code disassembly (best guess):
0: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
4: 0f 85 81 10 00 00 jne 0x108b
a: 49 8b af 88 03 00 00 mov 0x388(%r15),%rbp
11: 48 8d 45 30 lea 0x30(%rbp),%rax
15: 48 89 c2 mov %rax,%rdx
18: 48 89 04 24 mov %rax,(%rsp)
1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
23: fc ff df
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 74 08 je 0x3a
32: 3c 03 cmp $0x3,%al
34: 0f 8e 83 11 00 00 jle 0x11bd
3a: 48 8d 45 2c lea 0x2c(%rbp),%rax
3e: 44 rex.R
3f: 8b .byte 0x8b


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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syzbot will keep track of this issue. See:
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If the bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want to change bug's subsystems, reply with:
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(See the list of subsystem names on the web dashboard)

If the bug is a duplicate of another bug, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup

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