Hello, syzbot found the following issue on: HEAD commit: 5bc1018675ec Merge tag 'pci-v6.15-fixes-3' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17ca0374580000 kernel config: https://syzkaller.appspot.com/x/.config?x=90837c100b88a636 dashboard link: https://syzkaller.appspot.com/bug?extid=4bcdddd48bb6f0be0da1 compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11a39d74580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=106fa270580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-5bc10186.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3a2f39285e07/vmlinux-5bc10186.xz kernel image: https://storage.googleapis.com/syzbot-assets/2a37a55f34fb/bzImage-5bc10186.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/cc5918853785/mount_4.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4bcdddd48bb6f0be0da1@xxxxxxxxxxxxxxxxxxxxxxxxx wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 wlan1: Trigger new scan to find an IBSS to join ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in net/mac80211/scan.c:1208:5 index 0 is out of range for type 'struct ieee80211_channel *[] __counted_by(n_channels)' (aka 'struct ieee80211_channel *[]') CPU: 0 UID: 0 PID: 131 Comm: kworker/u4:5 Not tainted 6.15.0-rc3-syzkaller-00342-g5bc1018675ec #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: events_unbound cfg80211_wiphy_work Call Trace: <TASK> dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 ubsan_epilogue+0xa/0x40 lib/ubsan.c:231 __ubsan_handle_out_of_bounds+0xe9/0xf0 lib/ubsan.c:453 ieee80211_request_ibss_scan+0x600/0x8b0 net/mac80211/scan.c:1208 ieee80211_sta_find_ibss net/mac80211/ibss.c:-1 [inline] ieee80211_ibss_work+0xde7/0x1060 net/mac80211/ibss.c:1670 cfg80211_wiphy_work+0x2dc/0x460 net/wireless/core.c:435 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK> ---[ end trace ]--- Kernel panic - not syncing: UBSAN: panic_on_warn set ... CPU: 0 UID: 0 PID: 131 Comm: kworker/u4:5 Not tainted 6.15.0-rc3-syzkaller-00342-g5bc1018675ec #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: events_unbound cfg80211_wiphy_work Call Trace: <TASK> dump_stack_lvl+0x99/0x250 lib/dump_stack.c:120 panic+0x2db/0x790 kernel/panic.c:354 check_panic_on_warn+0x89/0xb0 kernel/panic.c:243 __ubsan_handle_out_of_bounds+0xe9/0xf0 lib/ubsan.c:453 ieee80211_request_ibss_scan+0x600/0x8b0 net/mac80211/scan.c:1208 ieee80211_sta_find_ibss net/mac80211/ibss.c:-1 [inline] ieee80211_ibss_work+0xde7/0x1060 net/mac80211/ibss.c:1670 cfg80211_wiphy_work+0x2dc/0x460 net/wireless/core.c:435 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK> Kernel Offset: disabled Rebooting in 86400 seconds.. --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
