+Krzysztof Looks like another virt NFC issue. johannes On Mon, 2022-12-26 at 11:45 -0800, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 9d2f6060fe4c Merge tag 'trace-v6.2-1' of git://git.kernel... > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=1635b088480000 > kernel config: https://syzkaller.appspot.com/x/.config?x=85327a149d5f50f > dashboard link: https://syzkaller.appspot.com/bug?extid=9ef743bba3a17c756174 > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > userspace arch: i386 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=156edba0480000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15556074480000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/719b7f41a208/disk-9d2f6060.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/aaff85f16125/vmlinux-9d2f6060.xz > kernel image: https://storage.googleapis.com/syzbot-assets/25463cba3710/bzImage-9d2f6060.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+9ef743bba3a17c756174@xxxxxxxxxxxxxxxxxxxxxxxxx > > INFO: task kworker/0:7:5202 blocked for more than 143 seconds. > Not tainted 6.1.0-syzkaller-14364-g9d2f6060fe4c #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:kworker/0:7 state:D stack:28192 pid:5202 ppid:2 flags:0x00004000 > Workqueue: events rfkill_sync_work > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0xb8a/0x5450 kernel/sched/core.c:6555 > schedule+0xde/0x1b0 kernel/sched/core.c:6631 > schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690 > __mutex_lock_common kernel/locking/mutex.c:679 [inline] > __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 > rfkill_sync_work+0x1c/0xc0 net/rfkill/core.c:1040 > process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 > worker_thread+0x669/0x1090 kernel/workqueue.c:2436 > kthread+0x2e8/0x3a0 kernel/kthread.c:376 > ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 > </TASK> > INFO: task kworker/0:9:5210 blocked for more than 143 seconds. > Not tainted 6.1.0-syzkaller-14364-g9d2f6060fe4c #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:kworker/0:9 state:D stack:28352 pid:5210 ppid:2 flags:0x00004000 > Workqueue: events rfkill_global_led_trigger_worker > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0xb8a/0x5450 kernel/sched/core.c:6555 > schedule+0xde/0x1b0 kernel/sched/core.c:6631 > schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690 > __mutex_lock_common kernel/locking/mutex.c:679 [inline] > __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 > rfkill_global_led_trigger_worker+0x1b/0x120 net/rfkill/core.c:181 > process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 > worker_thread+0x669/0x1090 kernel/workqueue.c:2436 > kthread+0x2e8/0x3a0 kernel/kthread.c:376 > ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 > </TASK> > INFO: task syz-executor299:5750 blocked for more than 143 seconds. > Not tainted 6.1.0-syzkaller-14364-g9d2f6060fe4c #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor299 state:D stack:26944 pid:5750 ppid:5096 flags:0x20004002 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0xb8a/0x5450 kernel/sched/core.c:6555 > schedule+0xde/0x1b0 kernel/sched/core.c:6631 > schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690 > __mutex_lock_common kernel/locking/mutex.c:679 [inline] > __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 > rfkill_unregister+0xde/0x2c0 net/rfkill/core.c:1130 > nfc_unregister_device+0x96/0x330 net/nfc/core.c:1167 > virtual_ncidev_close+0x52/0xb0 drivers/nfc/virtual_ncidev.c:163 > __fput+0x27c/0xa90 fs/file_table.c:320 > task_work_run+0x16f/0x270 kernel/task_work.c:179 > exit_task_work include/linux/task_work.h:38 [inline] > do_exit+0xaa8/0x2950 kernel/exit.c:867 > do_group_exit+0xd4/0x2a0 kernel/exit.c:1010 > __do_sys_exit_group kernel/exit.c:1021 [inline] > __se_sys_exit_group kernel/exit.c:1019 [inline] > __ia32_sys_exit_group+0x3e/0x50 kernel/exit.c:1019 > do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] > __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 > do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 > entry_SYSENTER_compat_after_hwframe+0x70/0x82 > RIP: 0023:0xf7ebe549 > RSP: 002b:00000000ffe472dc EFLAGS: 00000292 ORIG_RAX: 00000000000000fc > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000000000 > RDX: 00000000f7f63fa0 RSI: 00000000f7f64358 RDI: 00000000f7f64358 > RBP: 00000000f7f648c8 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > </TASK> > INFO: task syz-executor299:5754 blocked for more than 143 seconds. > Not tainted 6.1.0-syzkaller-14364-g9d2f6060fe4c #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor299 state:D stack:27352 pid:5754 ppid:5099 flags:0x20000004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0xb8a/0x5450 kernel/sched/core.c:6555 > schedule+0xde/0x1b0 kernel/sched/core.c:6631 > schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690 > __mutex_lock_common kernel/locking/mutex.c:679 [inline] > __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 > device_lock include/linux/device.h:831 [inline] > nfc_dev_down+0x2d/0x2d0 net/nfc/core.c:143 > nfc_rfkill_set_block+0x33/0xd0 net/nfc/core.c:179 > rfkill_set_block+0x1f9/0x540 net/rfkill/core.c:345 > rfkill_fop_write+0x2c7/0x570 net/rfkill/core.c:1286 > vfs_write+0x2db/0xdd0 fs/read_write.c:582 > ksys_write+0x1ec/0x250 fs/read_write.c:637 > do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] > __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 > do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 > entry_SYSENTER_compat_after_hwframe+0x70/0x82 > RIP: 0023:0xf7ebe549 > RSP: 002b:00000000ffe4733c EFLAGS: 00000246 ORIG_RAX: 0000000000000004 > RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000080 > RDX: 0000000000000008 RSI: 0000000003700000 RDI: 0000000001000000 > RBP: 0000000000075861 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000 > R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > </TASK> > INFO: task syz-executor299:5759 blocked for more than 144 seconds. > Not tainted 6.1.0-syzkaller-14364-g9d2f6060fe4c #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor299 state:D stack:27544 pid:5759 ppid:5102 flags:0x20004004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0xb8a/0x5450 kernel/sched/core.c:6555 > schedule+0xde/0x1b0 kernel/sched/core.c:6631 > schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690 > __mutex_lock_common kernel/locking/mutex.c:679 [inline] > __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 > rfkill_register+0x3a/0xb00 net/rfkill/core.c:1057 > nfc_register_device+0x124/0x3b0 net/nfc/core.c:1132 > nci_register_device+0x7cb/0xb50 net/nfc/nci/core.c:1257 > virtual_ncidev_open+0x14f/0x230 drivers/nfc/virtual_ncidev.c:148 > misc_open+0x37a/0x4a0 drivers/char/misc.c:165 > chrdev_open+0x26a/0x770 fs/char_dev.c:414 > do_dentry_open+0x6cc/0x13f0 fs/open.c:882 > do_open fs/namei.c:3557 [inline] > path_openat+0x1bbc/0x2a50 fs/namei.c:3714 > do_filp_open+0x1ba/0x410 fs/namei.c:3741 > do_sys_openat2+0x16d/0x4c0 fs/open.c:1310 > do_sys_open fs/open.c:1326 [inline] > __do_compat_sys_openat fs/open.c:1386 [inline] > __se_compat_sys_openat fs/open.c:1384 [inline] > __ia32_compat_sys_openat+0x143/0x1f0 fs/open.c:1384 > do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] > __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 > do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 > entry_SYSENTER_compat_after_hwframe+0x70/0x82 > RIP: 0023:0xf7ebe549 > RSP: 002b:00000000ffe4732c EFLAGS: 00000286 ORIG_RAX: 0000000000000127 > RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000020000080 > RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000f7f2f03f > RBP: 0000000000000012 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > </TASK> > INFO: task syz-executor299:5761 blocked for more than 144 seconds. > Not tainted 6.1.0-syzkaller-14364-g9d2f6060fe4c #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor299 state:D stack:28208 pid:5761 ppid:5097 flags:0x20000004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0xb8a/0x5450 kernel/sched/core.c:6555 > schedule+0xde/0x1b0 kernel/sched/core.c:6631 > schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690 > __mutex_lock_common kernel/locking/mutex.c:679 [inline] > __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 > misc_open+0x63/0x4a0 drivers/char/misc.c:129 > chrdev_open+0x26a/0x770 fs/char_dev.c:414 > do_dentry_open+0x6cc/0x13f0 fs/open.c:882 > do_open fs/namei.c:3557 [inline] > path_openat+0x1bbc/0x2a50 fs/namei.c:3714 > do_filp_open+0x1ba/0x410 fs/namei.c:3741 > do_sys_openat2+0x16d/0x4c0 fs/open.c:1310 > do_sys_open fs/open.c:1326 [inline] > __do_compat_sys_openat fs/open.c:1386 [inline] > __se_compat_sys_openat fs/open.c:1384 [inline] > __ia32_compat_sys_openat+0x143/0x1f0 fs/open.c:1384 > do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] > __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 > do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 > entry_SYSENTER_compat_after_hwframe+0x70/0x82 > RIP: 0023:0xf7ebe549 > RSP: 002b:00000000ffe4732c EFLAGS: 00000286 ORIG_RAX: 0000000000000127 > RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000020000080 > RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000f7f2f03f > RBP: 0000000000000012 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > </TASK> > INFO: task syz-executor299:5763 blocked for more than 144 seconds. > Not tainted 6.1.0-syzkaller-14364-g9d2f6060fe4c #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor299 state:D stack:28208 pid:5763 ppid:5100 flags:0x20000004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0xb8a/0x5450 kernel/sched/core.c:6555 > schedule+0xde/0x1b0 kernel/sched/core.c:6631 > schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690 > __mutex_lock_common kernel/locking/mutex.c:679 [inline] > __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 > misc_open+0x63/0x4a0 drivers/char/misc.c:129 > chrdev_open+0x26a/0x770 fs/char_dev.c:414 > do_dentry_open+0x6cc/0x13f0 fs/open.c:882 > do_open fs/namei.c:3557 [inline] > path_openat+0x1bbc/0x2a50 fs/namei.c:3714 > do_filp_open+0x1ba/0x410 fs/namei.c:3741 > do_sys_openat2+0x16d/0x4c0 fs/open.c:1310 > do_sys_open fs/open.c:1326 [inline] > __do_compat_sys_openat fs/open.c:1386 [inline] > __se_compat_sys_openat fs/open.c:1384 [inline] > __ia32_compat_sys_openat+0x143/0x1f0 fs/open.c:1384 > do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] > __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 > do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 > entry_SYSENTER_compat_after_hwframe+0x70/0x82 > RIP: 0023:0xf7ebe549 > RSP: 002b:00000000ffe4732c EFLAGS: 00000286 ORIG_RAX: 0000000000000127 > RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000020000080 > RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000f7f2f03f > RBP: 0000000000000012 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > </TASK> > INFO: task syz-executor299:5768 blocked for more than 145 seconds. > Not tainted 6.1.0-syzkaller-14364-g9d2f6060fe4c #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor299 state:D stack:28088 pid:5768 ppid:5101 flags:0x20004004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0xb8a/0x5450 kernel/sched/core.c:6555 > schedule+0xde/0x1b0 kernel/sched/core.c:6631 > schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690 > __mutex_lock_common kernel/locking/mutex.c:679 [inline] > __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 > misc_open+0x63/0x4a0 drivers/char/misc.c:129 > chrdev_open+0x26a/0x770 fs/char_dev.c:414 > do_dentry_open+0x6cc/0x13f0 fs/open.c:882 > do_open fs/namei.c:3557 [inline] > path_openat+0x1bbc/0x2a50 fs/namei.c:3714 > do_filp_open+0x1ba/0x410 fs/namei.c:3741 > do_sys_openat2+0x16d/0x4c0 fs/open.c:1310 > do_sys_open fs/open.c:1326 [inline] > __do_compat_sys_openat fs/open.c:1386 [inline] > __se_compat_sys_openat fs/open.c:1384 [inline] > __ia32_compat_sys_openat+0x143/0x1f0 fs/open.c:1384 > do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] > __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 > do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 > entry_SYSENTER_compat_after_hwframe+0x70/0x82 > RIP: 0023:0xf7ebe549 > RSP: 002b:00000000ffe4732c EFLAGS: 00000286 ORIG_RAX: 0000000000000127 > RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000020000080 > RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000f7f2f03f > RBP: 0000000000000012 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > </TASK> > > Showing all locks held in the system: > 1 lock held by rcu_tasks_kthre/12: > #0: ffffffff8c790c70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 > 1 lock held by rcu_tasks_trace/13: > #0: ffffffff8c790970 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 > 1 lock held by khungtaskd/28: > #0: ffffffff8c7917c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494 > 1 lock held by klogd/4423: > #0: ffff8880b983b598 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:537 > 2 locks held by getty/4749: > #0: ffff88814c048098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244 > #1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177 > 3 locks held by kworker/0:7/5202: > #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] > #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] > #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] > #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] > #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] > #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 > #1: ffffc90003d8fda8 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 > #2: ffffffff8e4e30e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_sync_work+0x1c/0xc0 net/rfkill/core.c:1040 > 3 locks held by kworker/0:9/5210: > #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] > #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] > #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] > #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] > #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] > #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 > #1: ffffc90004357da8 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 > #2: ffffffff8e4e30e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x1b/0x120 net/rfkill/core.c:181 > 2 locks held by syz-executor299/5750: > #0: ffff888075e3c100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] > #0: ffff888075e3c100 (&dev->mutex){....}-{3:3}, at: nfc_unregister_device+0x62/0x330 net/nfc/core.c:1165 > #1: ffffffff8e4e30e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xde/0x2c0 net/rfkill/core.c:1130 > 2 locks held by syz-executor299/5754: > #0: ffffffff8e4e30e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x160/0x570 net/rfkill/core.c:1278 > #1: ffff888075e3c100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] > #1: ffff888075e3c100 (&dev->mutex){....}-{3:3}, at: nfc_dev_down+0x2d/0x2d0 net/nfc/core.c:143 > 3 locks held by syz-executor299/5759: > #0: ffffffff8d243a88 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x63/0x4a0 drivers/char/misc.c:129 > #1: ffff888021d64100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] > #1: ffff888021d64100 (&dev->mutex){....}-{3:3}, at: nfc_register_device+0x9f/0x3b0 net/nfc/core.c:1128 > #2: ffffffff8e4e30e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x3a/0xb00 net/rfkill/core.c:1057 > 1 lock held by syz-executor299/5761: > #0: ffffffff8d243a88 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x63/0x4a0 drivers/char/misc.c:129 > 1 lock held by syz-executor299/5763: > #0: ffffffff8d243a88 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x63/0x4a0 drivers/char/misc.c:129 > 1 lock held by syz-executor299/5768: > #0: ffffffff8d243a88 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x63/0x4a0 drivers/char/misc.c:129 > > ============================================= > > NMI backtrace for cpu 1 > CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-syzkaller-14364-g9d2f6060fe4c #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 > Call Trace: > <TASK> > __dump_stack lib/dump_stack.c:88 [inline] > dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 > nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111 > nmi_trigger_cpumask_backtrace+0x333/0x3c0 lib/nmi_backtrace.c:62 > trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] > check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] > watchdog+0xc75/0xfc0 kernel/hung_task.c:377 > kthread+0x2e8/0x3a0 kernel/kthread.c:376 > ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 > </TASK> > Sending NMI from CPU 1 to CPUs 0: > NMI backtrace for cpu 0 > CPU: 0 PID: 5083 Comm: kworker/u4:3 Not tainted 6.1.0-syzkaller-14364-g9d2f6060fe4c #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 > Workqueue: events_unbound toggle_allocation_gate > RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline] > RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline] > RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline] > RIP: 0010:wrmsrl arch/x86/include/asm/msr.h:262 [inline] > RIP: 0010:native_x2apic_icr_write arch/x86/include/asm/apic.h:238 [inline] > RIP: 0010:__x2apic_send_IPI_dest arch/x86/kernel/apic/x2apic_phys.c:123 [inline] > RIP: 0010:x2apic_send_IPI+0x97/0xe0 arch/x86/kernel/apic/x2apic_phys.c:48 > Code: b7 13 0f ae f0 0f ae e8 b9 00 04 00 00 41 83 fc 02 44 89 e0 48 0f 44 c1 48 c1 e2 20 b9 30 08 00 00 48 09 d0 48 c1 ea 20 0f 30 <66> 90 5b 5d 41 5c c3 5b 31 d2 48 89 c6 bf 30 08 00 00 5d 41 5c e9 > RSP: 0018:ffffc90003bdf8d0 EFLAGS: 00000202 > RAX: 00000001000000fb RBX: ffff8880b99219e8 RCX: 0000000000000830 > RDX: 0000000000000001 RSI: 00000000000000fb RDI: ffffffff8c12f908 > RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000001 > R10: 0000000000000001 R11: 0000000000000000 R12: 00000000000000fb > R13: ffffc90003bdf910 R14: 0000000000000002 R15: dffffc0000000000 > FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 000055a7f7541f68 CR3: 000000000c48e000 CR4: 00000000003506f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > <TASK> > arch_send_call_function_single_ipi arch/x86/include/asm/smp.h:108 [inline] > send_call_function_single_ipi+0x1ed/0x3b0 kernel/sched/core.c:3774 > smp_call_function_many_cond+0xe64/0x10a0 kernel/smp.c:967 > on_each_cpu_cond_mask+0x5a/0xa0 kernel/smp.c:1155 > on_each_cpu include/linux/smp.h:71 [inline] > text_poke_sync arch/x86/kernel/alternative.c:1772 [inline] > text_poke_bp_batch+0x585/0x6b0 arch/x86/kernel/alternative.c:2032 > text_poke_flush arch/x86/kernel/alternative.c:2131 [inline] > text_poke_flush arch/x86/kernel/alternative.c:2128 [inline] > text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2138 > arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146 > jump_label_update+0x32f/0x410 kernel/jump_label.c:829 > static_key_disable_cpuslocked+0x156/0x1b0 kernel/jump_label.c:235 > static_key_disable+0x1a/0x20 kernel/jump_label.c:243 > toggle_allocation_gate mm/kfence/core.c:804 [inline] > toggle_allocation_gate+0x143/0x230 mm/kfence/core.c:791 > process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 > worker_thread+0x669/0x1090 kernel/workqueue.c:2436 > kthread+0x2e8/0x3a0 kernel/kthread.c:376 > ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 > </TASK> > INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.084 msecs > > > --- > 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. > syzbot can test patches for this issue, for details see: > https://goo.gl/tpsmEJ#testing-patches >
