1024-page vmalloc region starting at 0xffffc9000eedc000 allocated at kcov_ioctl+0x58/0x650 kernel/kcov.c:716 list_del corruption. next->prev should be ffffc9001b7d6000, but was ffffffff8132d5fe. (next=ffffc9000eedc000) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:67! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:__list_del_entry_valid_or_report+0x18a/0x190 lib/list_debug.c:65 Code: 0c 01 80 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 9d ff 9f fd 49 8b 56 08 48 c7 c7 80 9e 1d 8b 48 89 de 4c 89 f1 e8 67 57 a8 fc 90 <0f> 0b cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90000117948 EFLAGS: 00010246 RAX: 000000000000006d RBX: ffffc9001b7d6000 RCX: 3f5fd8235a4a7b00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000100000 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed101712487b R12: 1ffff92001ddb801 R13: dffffc0000000000 R14: ffffc9000eedc000 R15: ffffc9000eedc008 FS: 0000000000000000(0000) GS:ffff88812713b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3de6f84860 CR3: 0000000051e18000 CR4: 00000000003526f0 Call Trace: __list_del_entry_valid include/linux/list.h:132 [inline] __list_del_entry include/linux/list.h:223 [inline] list_del include/linux/list.h:237 [inline] kcov_remote_area_get kernel/kcov.c:143 [inline] kcov_remote_start+0x2b0/0x6f0 kernel/kcov.c:906 kcov_remote_start_common include/linux/kcov.h:50 [inline] ieee80211_iface_work+0x211/0x12d0 net/mac80211/iface.c:1743 cfg80211_wiphy_work+0x2bb/0x470 net/wireless/core.c:435 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x18a/0x190 lib/list_debug.c:65 Code: 0c 01 80 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 9d ff 9f fd 49 8b 56 08 48 c7 c7 80 9e 1d 8b 48 89 de 4c 89 f1 e8 67 57 a8 fc 90 <0f> 0b cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90000117948 EFLAGS: 00010246 RAX: 000000000000006d RBX: ffffc9001b7d6000 RCX: 3f5fd8235a4a7b00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000100000 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed101712487b R12: 1ffff92001ddb801 R13: dffffc0000000000 R14: ffffc9000eedc000 R15: ffffc9000eedc008 FS: 0000000000000000(0000) GS:ffff88812713b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3de6f84860 CR3: 0000000051e18000 CR4: 00000000003526f0