Bluetooth: fix kernel oops in store_pending_adv_report
Fix kernel oops observed when an ext adv data is larger than 31 bytes.
This can be reproduced by setting up an advertiser with advertisement
larger than 31 bytes. The issue is not sensitive to the advertisement
content. In particular, this was reproduced with an advertisement of
229 bytes filled with 'A'. See stack trace below.
This is fixed by not catching ext_adv as legacy adv are only cached to
be able to concatenate a scanable adv with its scan response before
sending it up through mgmt.
With ext_adv, this is no longer necessary.
general protection fault: 0000 [#1] SMP PTI
CPU: 6 PID: 205 Comm: kworker/u17:0 Not tainted 5.4.0-37-generic #41-Ubuntu
Hardware name: Dell Inc. XPS 15 7590/0CF6RR, BIOS 1.7.0 05/11/2020
Workqueue: hci0 hci_rx_work [bluetooth]
RIP: 0010:hci_bdaddr_list_lookup+0x1e/0x40 [bluetooth]
Code: ff ff e9 26 ff ff ff 0f 1f 44 00 00 0f 1f 44 00 00 55 48 8b 07 48 89 e5 48 39 c7 75 0a eb 24 48 8b 00 48 39 f8 74 1c 44 8b 06 <44> 39 40 10 75 ef 44 0f b7 4e 04 66 44 39 48 14 75 e3 38 50 16 75
RSP: 0018:ffffbc6a40493c70 EFLAGS: 00010286
RAX: 4141414141414141 RBX: 000000000000001b RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff9903e76c100f RDI: ffff9904289d4b28
RBP: ffffbc6a40493c70 R08: 0000000093570362 R09: 0000000000000000
R10: 0000000000000000 R11: ffff9904344eae38 R12: ffff9904289d4000
R13: 0000000000000000 R14: 00000000ffffffa3 R15: ffff9903e76c100f
FS: 0000000000000000(0000) GS:ffff990434580000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feed125a000 CR3: 00000001b860a003 CR4: 00000000003606e0
Call Trace:
process_adv_report+0x12e/0x560 [bluetooth]
hci_le_meta_evt+0x7b2/0xba0 [bluetooth]
hci_event_packet+0x1c29/0x2a90 [bluetooth]
hci_rx_work+0x19b/0x360 [bluetooth]
process_one_work+0x1eb/0x3b0
worker_thread+0x4d/0x400
kthread+0x104/0x140
Fixes: c215e9397b ("Bluetooth: Process extended ADV report event")
Reported-by: Andy Nguyen <theflow@google.com>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Signed-off-by: Alain Michaud <alainm@chromium.org>
Tested-by: Sonny Sasaka <sonnysasaka@chromium.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
a2ec905d1e