CVE-2025-39769

In the Linux kernel, the following vulnerability has been resolved:

bnxt_en: Fix lockdep warning during rmmod

The commit under the Fixes tag added a netdev_assert_locked() in

bnxt_free_ntp_fltrs(). The lock should be held during normal run-time

but the assert will be triggered (see below) during bnxt_remove_one()

which should not need the lock. The netdev is already unregistered by

then. Fix it by calling netdev_assert_locked_or_invisible() which will

not assert if the netdev is unregistered.

WARNING: CPU: 5 PID: 2241 at ./include/net/netdev_lock.h:17 bnxt_free_ntp_fltrs+0xf8/0x100 [bnxt_en]

Modules linked in: rpcrdma rdma_cm iw_cm ib_cm configfs ib_core bnxt_en(-) bridge stp llc x86_pkg_temp_thermal xfs tg3 [last unloaded: bnxt_re]

CPU: 5 UID: 0 PID: 2241 Comm: rmmod Tainted: G S W 6.16.0 #2 PREEMPT(voluntary)

Tainted: [S]=CPU_OUT_OF_SPEC, [W]=WARN

Hardware name: Dell Inc. PowerEdge R730/072T6D, BIOS 2.4.3 01/17/2017

RIP: 0010:bnxt_free_ntp_fltrs+0xf8/0x100 [bnxt_en]

Code: 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 48 8b 47 60 be ff ff ff ff 48 8d b8 28 0c 00 00 e8 d0 cf 41 c3 85 c0 0f 85 2e ff ff ff <0f> 0b e9 27 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90

RSP: 0018:ffffa92082387da0 EFLAGS: 00010246

RAX: 0000000000000000 RBX: ffff9e5b593d8000 RCX: 0000000000000001

RDX: 0000000000000001 RSI: ffffffff83dc9a70 RDI: ffffffff83e1a1cf

RBP: ffff9e5b593d8c80 R08: 0000000000000000 R09: ffffffff8373a2b3

R10: 000000008100009f R11: 0000000000000001 R12: 0000000000000001

R13: ffffffffc01c4478 R14: dead000000000122 R15: dead000000000100

FS: 00007f3a8a52c740(0000) GS:ffff9e631ad1c000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 000055bb289419c8 CR3: 000000011274e001 CR4: 00000000003706f0

Call Trace:

<TASK>

bnxt_remove_one+0x57/0x180 [bnxt_en]

pci_device_remove+0x39/0xc0

device_release_driver_internal+0xa5/0x130

driver_detach+0x42/0x90

bus_remove_driver+0x61/0xc0

pci_unregister_driver+0x38/0x90

bnxt_exit+0xc/0x7d0 [bnxt_en]