Hello, syzbot found the following issue on: HEAD commit: 8867bbd4a056 mm: arm64: Fix the out-of-bounds issue in con.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=112ad20a980000 kernel config: https://syzkaller.appspot.com/x/.config?x=3b4350cf56c61c80 dashboard link: https://syzkaller.appspot.com/bug?extid=1b2abad17596ad03dcff compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1112d2ce980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12c37286980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/6ea21f50498b/disk-8867bbd4.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e2fed09364aa/vmlinux-8867bbd4.xz kernel image: https://storage.googleapis.com/syzbot-assets/4860173c7a18/Image-8867bbd4.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1b2abad17596ad03dcff@xxxxxxxxxxxxxxxxxxxxxxxxx cdc_wdm 1-1:1.0: nonzero urb status received: -71 cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 1-1:1.0: nonzero urb status received: -71 cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes watchdog: BUG: soft lockup - CPU#0 stuck for 27s! [kworker/u9:2:6293] CPU#0 Utilization every 4s during lockup: #1: 97% system, 1% softirq, 4% hardirq, 0% idle #2: 98% system, 1% softirq, 3% hardirq, 0% idle #3: 97% system, 0% softirq, 3% hardirq, 0% idle #4: 98% system, 1% softirq, 3% hardirq, 0% idle #5: 98% system, 1% softirq, 3% hardirq, 0% idle Modules linked in: irq event stamp: 150196 hardirqs last enabled at (150195): [<ffff80008037bc00>] console_emit_next_record kernel/printk/printk.c:2935 [inline] hardirqs last enabled at (150195): [<ffff80008037bc00>] console_flush_all+0x650/0xb74 kernel/printk/printk.c:2994 hardirqs last disabled at (150196): [<ffff80008af10b00>] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (150196): [<ffff80008af10b00>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (150190): [<ffff8000801ea530>] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (150190): [<ffff8000801ea530>] handle_softirqs+0xa60/0xc34 kernel/softirq.c:582 softirqs last disabled at (150185): [<ffff800080020de8>] __do_softirq+0x14/0x20 kernel/softirq.c:588 CPU: 0 PID: 6293 Comm: kworker/u9:2 Tainted: G W 6.10.0-rc2-syzkaller-g8867bbd4a056 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Workqueue: hci0 hci_cmd_timeout pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:176 [inline] pc : arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] pc : console_emit_next_record kernel/printk/printk.c:2935 [inline] pc : console_flush_all+0x67c/0xb74 kernel/printk/printk.c:2994 lr : console_emit_next_record kernel/printk/printk.c:2935 [inline] lr : console_flush_all+0x678/0xb74 kernel/printk/printk.c:2994 sp : ffff8000993f7360 x29: ffff8000993f7460 x28: ffff8000993f7510 x27: 0000000000000001 x26: ffff80009090b530 x25: ffff80009090b520 x24: dfff800000000000 x23: 1ffff000121216af x22: dfff800000000000 x21: ffff80009090b578 x20: 0000000000000000 x19: 00000000000000c0 x18: ffff8000993f7298 x17: 6965636572207375 x16: ffff80008033878c x15: 0000000000000001 x14: 1ffff00011e379c8 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000d3a39e40 x7 : ffff800080381d44 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : 0000000000000080 x0 : 0000000000000000 Call trace: __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] console_emit_next_record kernel/printk/printk.c:2935 [inline] console_flush_all+0x67c/0xb74 kernel/printk/printk.c:2994 console_unlock+0xec/0x3d4 kernel/printk/printk.c:3063 vprintk_emit+0x1ec/0x350 kernel/printk/printk.c:2345 vprintk_default+0xa0/0xe4 kernel/printk/printk.c:2360 vprintk+0x200/0x2d4 kernel/printk/printk_safe.c:45 _printk+0xdc/0x128 kernel/printk/printk.c:2370 bt_err+0xfc/0x144 net/bluetooth/lib.c:296 hci_cmd_timeout+0xd8/0x1cc net/bluetooth/hci_core.c:1528 process_one_work+0x7b0/0x15e8 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:3393 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 6.10.0-rc2-syzkaller-g8867bbd4a056 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:50 lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:124 sp : ffff800093e97d10 x29: ffff800093e97d10 x28: dfff800000000000 x27: 1ffff000127d2fb0 x26: ffff80008efed000 x25: 0000000000000000 x24: 0000000000000002 x23: 1ffff00011dfdaad x22: ffff80008efed568 x21: 0000000000000000 x20: ffff0000c1b70000 x19: ffff8000802e6e08 x18: 1fffe000367b6bde x17: ffff80008efed000 x16: ffff8000802e66cc x15: 0000000000000001 x14: 1fffe000367b8941 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000b17a9 x7 : ffff80008047f238 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008af14fe8 x2 : 0000000000000000 x1 : ffff80008b0900a0 x0 : ffff800124e80000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:48 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x1f0/0x4e4 kernel/sched/idle.c:332 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:430 secondary_start_kernel+0x1bc/0x1e4 arch/arm64/kernel/smp.c:279 __secondary_switched+0xb8/0xbc arch/arm64/kernel/head.S:417 --- 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
