wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 ------------[ cut here ]------------ kernel BUG at fs/hfs/inode.c:441! wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8054 Comm: kworker/u4:5 Not tainted 4.19.211-syzkaller #0 IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: writeback wb_workfn (flush-7:3) IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready RIP: 0010:hfs_write_inode+0x4f2/0x930 fs/hfs/inode.c:441 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 Code: ae 7d 88 4c 89 ef e8 ed f7 63 ff 49 83 fd 03 0f 84 95 00 00 00 49 83 fd 04 74 11 49 83 fd 02 0f 84 ed fb ff ff e8 1e f6 63 ff <0f> 0b e8 17 f6 63 ff 48 8d 7d 28 48 b8 00 00 00 00 00 fc ff df 48 RSP: 0018:ffff88808d0ef7b8 EFLAGS: 00010293 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 RAX: ffff8880b3ebc240 RBX: 1ffff11011a1def9 RCX: ffffffff81fe8f33 RDX: 0000000000000000 RSI: ffffffff81fe8f52 RDI: 0000000000000007 RBP: ffff8880967eb840 R08: 0000000000000000 R09: 0000000000000004 R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000000 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready R13: 0000000000000005 R14: ffffffff887dcd20 R15: ffff8880967eb868 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055691d6a48b8 CR3: 00000000995bf000 CR4: 00000000003406e0 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready write_inode fs/fs-writeback.c:1244 [inline] __writeback_single_inode+0x733/0x11d0 fs/fs-writeback.c:1442 writeback_sb_inodes+0x537/0xef0 fs/fs-writeback.c:1647 wb_writeback+0x28d/0xcc0 fs/fs-writeback.c:1820 wb_do_writeback fs/fs-writeback.c:1965 [inline] wb_workfn+0x29b/0x1250 fs/fs-writeback.c:2006 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Modules linked in: ---[ end trace c78683b21fee6e97 ]--- RIP: 0010:hfs_write_inode+0x4f2/0x930 fs/hfs/inode.c:441 Code: ae 7d 88 4c 89 ef e8 ed f7 63 ff 49 83 fd 03 0f 84 95 00 00 00 49 83 fd 04 74 11 49 83 fd 02 0f 84 ed fb ff ff e8 1e f6 63 ff <0f> 0b e8 17 f6 63 ff 48 8d 7d 28 48 b8 00 00 00 00 00 fc ff df 48 RSP: 0018:ffff88808d0ef7b8 EFLAGS: 00010293 RAX: ffff8880b3ebc240 RBX: 1ffff11011a1def9 RCX: ffffffff81fe8f33 RDX: 0000000000000000 RSI: ffffffff81fe8f52 RDI: 0000000000000007 RBP: ffff8880967eb840 R08: 0000000000000000 R09: 0000000000000004 R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000005 R14: ffffffff887dcd20 R15: ffff8880967eb868 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc2e728000 CR3: 00000000b4e4a000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400