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BUG: KMSAN: kernel-infoleak-after-free in instrument_copy_to_user include/linux/instrumented.h:114 [inline]
BUG: KMSAN: kernel-infoleak-after-free in copy_to_user_iter lib/iov_iter.c:24 [inline]
BUG: KMSAN: kernel-infoleak-after-free in iterate_ubuf include/linux/iov_iter.h:30 [inline]
BUG: KMSAN: kernel-infoleak-after-free in iterate_and_advance2 include/linux/iov_iter.h:300 [inline]
BUG: KMSAN: kernel-infoleak-after-free in iterate_and_advance include/linux/iov_iter.h:328 [inline]
BUG: KMSAN: kernel-infoleak-after-free in _copy_to_iter+0xf0e/0x33f0 lib/iov_iter.c:185
 instrument_copy_to_user include/linux/instrumented.h:114 [inline]
 copy_to_user_iter lib/iov_iter.c:24 [inline]
 iterate_ubuf include/linux/iov_iter.h:30 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:300 [inline]
 iterate_and_advance include/linux/iov_iter.h:328 [inline]
 _copy_to_iter+0xf0e/0x33f0 lib/iov_iter.c:185
 copy_page_to_iter+0x482/0x910 lib/iov_iter.c:362
 copy_folio_to_iter include/linux/uio.h:204 [inline]
 filemap_read+0xcfd/0x2300 mm/filemap.c:2762
 blkdev_read_iter+0x89f/0xb00 block/fops.c:833
 new_sync_read fs/read_write.c:491 [inline]
 vfs_read+0x85a/0xf00 fs/read_write.c:572
 ksys_read fs/read_write.c:715 [inline]
 __do_sys_read fs/read_write.c:724 [inline]
 __se_sys_read fs/read_write.c:722 [inline]
 __x64_sys_read+0x1fb/0x4d0 fs/read_write.c:722
 x64_sys_call+0x39db/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_free_hook mm/slub.c:2307 [inline]
 slab_free mm/slub.c:4643 [inline]
 kfree+0x252/0xec0 mm/slub.c:4842
 ieee80211_inform_bss+0x1415/0x1540 net/mac80211/scan.c:160
 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline]
 cfg80211_inform_single_bss_data+0x1858/0x2870 net/wireless/scan.c:2367
 cfg80211_inform_bss_data+0x29b/0x7e70 net/wireless/scan.c:3222
 cfg80211_inform_bss_frame_data+0x6cd/0xaa0 net/wireless/scan.c:3313
 ieee80211_bss_info_update+0x8a4/0xaa0 net/mac80211/scan.c:226
 ieee80211_scan_rx+0xa23/0xd70 net/mac80211/scan.c:355
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5179 [inline]
 ieee80211_rx_list+0x449a/0x6120 net/mac80211/rx.c:5416
 ieee80211_rx_napi+0x84/0x400 net/mac80211/rx.c:5439
 ieee80211_rx include/net/mac80211.h:5185 [inline]
 ieee80211_handle_queued_frames+0x14f/0x350 net/mac80211/main.c:441
 ieee80211_tasklet_handler+0x25/0x30 net/mac80211/main.c:460
 tasklet_action_common+0x35f/0xd70 kernel/softirq.c:829
 tasklet_action+0x2d/0x40 kernel/softirq.c:855
 handle_softirqs+0x166/0x6e0 kernel/softirq.c:579
 run_ksoftirqd+0x29/0x50 kernel/softirq.c:968
 smpboot_thread_fn+0x569/0xa30 kernel/smpboot.c:164
 kthread+0xd5c/0xf00 kernel/kthread.c:464
 ret_from_fork+0x1e0/0x310 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Bytes 202-207 of 512 are uninitialized
Memory access of size 512 starts at ffff88803a45c000
Data copied to user address 00007fd4d2b95000

CPU: 0 UID: 0 PID: 6019 Comm: udevd Tainted: G        W           6.16.0-rc1-syzkaller-00239-g08215f5486ec #0 PREEMPT(undef) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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