Hello, syzbot found the following issue on: HEAD commit: fca7526b7d89 drm/tests/drm_buddy: fix build failure on 32-.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=170edffc180000 kernel config: https://syzkaller.appspot.com/x/.config?x=5e7cea39e8c4d7d3 dashboard link: https://syzkaller.appspot.com/bug?extid=8e808eb853386f575d86 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ee1932a6c45a/disk-fca7526b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f525fc08e238/vmlinux-fca7526b.xz kernel image: https://storage.googleapis.com/syzbot-assets/cd501b251c05/bzImage-fca7526b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8e808eb853386f575d86@xxxxxxxxxxxxxxxxxxxxxxxxx ======================================================== WARNING: possible irq lock inversion dependency detected 6.8.0-rc5-syzkaller-00002-gfca7526b7d89 #0 Not tainted -------------------------------------------------------- syz-executor.4/9979 just changed the state of lock: ffffffff8ebf32f8 (disc_data_lock){.?..}-{2:2}, at: ap_get drivers/net/ppp/ppp_async.c:137 [inline] ffffffff8ebf32f8 (disc_data_lock){.?..}-{2:2}, at: ppp_asynctty_ioctl+0x36/0x3f0 drivers/net/ppp/ppp_async.c:286 but this lock was taken by another, HARDIRQ-safe lock in the past: (&port_lock_key){-.-.}-{2:2} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(disc_data_lock); local_irq_disable(); lock(&port_lock_key); lock(disc_data_lock); <Interrupt> lock(&port_lock_key); *** DEADLOCK *** 1 lock held by syz-executor.4/9979: #0: ffff88802f1dc0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 the shortest dependencies between 2nd lock and 1st lock: -> (&port_lock_key){-.-.}-{2:2} { IN-HARDIRQ-W at: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 uart_port_lock_irqsave include/linux/serial_core.h:616 [inline] serial8250_handle_irq+0x81/0x710 drivers/tty/serial/8250/8250_port.c:1913 serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1962 serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:127 __handle_irq_event_percpu+0x289/0xa30 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210 handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0x138/0x230 arch/x86/kernel/irq.c:257 common_interrupt+0xa5/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:640 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] uart_port_unlock_irqrestore include/linux/serial_core.h:667 [inline] serial_port_runtime_resume+0x204/0x2b0 drivers/tty/serial/serial_port.c:41 __rpm_callback+0x2df/0x790 drivers/base/power/runtime.c:393 rpm_callback drivers/base/power/runtime.c:447 [inline] rpm_resume+0x10b1/0x1af0 drivers/base/power/runtime.c:913 pm_runtime_work+0x147/0x210 drivers/base/power/runtime.c:978 process_one_work kernel/workqueue.c:2633 [inline] process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787 kthread+0x2ef/0x390 kernel/kthread.c:388 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242 IN-SOFTIRQ-W at: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 uart_port_lock_irqsave include/linux/serial_core.h:616 [inline] serial8250_handle_irq+0x81/0x710 drivers/tty/serial/8250/8250_port.c:1913 serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1962 serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:127 __handle_irq_event_percpu+0x289/0xa30 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210 handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0x138/0x230 arch/x86/kernel/irq.c:257 common_interrupt+0x4f/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:640 arch_local_irq_enable arch/x86/include/asm/irqflags.h:77 [inline] __do_softirq+0x1da/0x942 kernel/softirq.c:537 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu+0xf1/0x1c0 kernel/softirq.c:632 irq_exit_rcu+0x9/0x30 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x97/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 console_flush_all+0x9cc/0xec0 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3036 vprintk_emit+0x508/0x720 kernel/printk/printk.c:2303 _printk+0xd5/0x120 kernel/printk/printk.c:2328 check_stack_usage kernel/exit.c:785 [inline] do_exit+0x1d41/0x2740 kernel/exit.c:914 do_group_exit+0x206/0x2c0 kernel/exit.c:1020 __do_sys_exit_group kernel/exit.c:1031 [inline] __se_sys_exit_group kernel/exit.c:1029 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1029 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 INITIAL USE at: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 uart_port_lock_irqsave include/linux/serial_core.h:616 [inline] serial8250_do_set_termios+0x531/0x17e0 drivers/tty/serial/8250/8250_port.c:2793 uart_set_options+0x3eb/0x730 drivers/tty/serial/serial_core.c:2320 serial8250_console_setup+0x3db/0x670 drivers/tty/serial/8250/8250_port.c:3507 univ8250_console_setup+0x3ac/0x470 drivers/tty/serial/8250/8250_core.c:632 try_enable_preferred_console+0x40d/0x560 kernel/printk/printk.c:3302 register_console+0x261/0xcd0 kernel/printk/printk.c:3479 univ8250_console_init+0x49/0x50 drivers/tty/serial/8250/8250_core.c:717 console_init+0x198/0x680 kernel/printk/printk.c:3688 start_kernel+0x2d2/0x500 init/main.c:1008 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:555 x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:536 secondary_startup_64_no_verify+0x171/0x17b } ... key at: [<ffffffff9477a680>] port_lock_key+0x0/0x20 ... acquired at: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228 ap_get drivers/net/ppp/ppp_async.c:137 [inline] ppp_asynctty_wakeup+0x20/0x210 drivers/net/ppp/ppp_async.c:353 tty_wakeup+0xbb/0x100 drivers/tty/tty_io.c:523 tty_port_default_wakeup+0xa6/0xf0 drivers/tty/tty_port.c:69 serial8250_tx_chars+0x6ad/0x8a0 drivers/tty/serial/8250/8250_port.c:1835 serial8250_handle_irq+0x558/0x710 drivers/tty/serial/8250/8250_port.c:1942 serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1962 serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:127 __handle_irq_event_percpu+0x289/0xa30 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210 handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0x138/0x230 arch/x86/kernel/irq.c:257 common_interrupt+0xa5/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:640 check_kcov_mode kernel/kcov.c:175 [inline] write_comp_data kernel/kcov.c:236 [inline] __sanitizer_cov_trace_cmp8+0x34/0x90 kernel/kcov.c:284 on_stack arch/x86/include/asm/stacktrace.h:60 [inline] unwind_next_frame+0x1df4/0x29e0 arch/x86/kernel/unwind_orc.c:665 arch_stack_walk+0x150/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x117/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:640 poison_slab_object+0xa6/0xe0 mm/kasan/common.c:241 __kasan_slab_free+0x34/0x70 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kmem_cache_free+0x102/0x2a0 mm/slub.c:4363 vma_lock_free kernel/fork.c:451 [inline] __vm_area_free+0xe0/0x110 kernel/fork.c:507 remove_vma mm/mmap.c:146 [inline] exit_mmap+0x6a9/0xd40 mm/mmap.c:3303 __mmput+0x115/0x3c0 kernel/fork.c:1343 exit_mm+0x21f/0x310 kernel/exit.c:569 do_exit+0x9af/0x2740 kernel/exit.c:858 do_group_exit+0x206/0x2c0 kernel/exit.c:1020 __do_sys_exit_group kernel/exit.c:1031 [inline] __se_sys_exit_group kernel/exit.c:1029 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1029 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 -> (disc_data_lock){.?..}-{2:2} { IN-HARDIRQ-R at: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228 ap_get drivers/net/ppp/ppp_async.c:137 [inline] ppp_asynctty_wakeup+0x20/0x210 drivers/net/ppp/ppp_async.c:353 tty_wakeup+0xbb/0x100 drivers/tty/tty_io.c:523 tty_port_default_wakeup+0xa6/0xf0 drivers/tty/tty_port.c:69 serial8250_tx_chars+0x6ad/0x8a0 drivers/tty/serial/8250/8250_port.c:1835 serial8250_handle_irq+0x558/0x710 drivers/tty/serial/8250/8250_port.c:1942 serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1962 serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:127 __handle_irq_event_percpu+0x289/0xa30 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210 handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0x138/0x230 arch/x86/kernel/irq.c:257 common_interrupt+0xa5/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:640 check_kcov_mode kernel/kcov.c:175 [inline] write_comp_data kernel/kcov.c:236 [inline] __sanitizer_cov_trace_cmp8+0x34/0x90 kernel/kcov.c:284 on_stack arch/x86/include/asm/stacktrace.h:60 [inline] unwind_next_frame+0x1df4/0x29e0 arch/x86/kernel/unwind_orc.c:665 arch_stack_walk+0x150/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x117/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:640 poison_slab_object+0xa6/0xe0 mm/kasan/common.c:241 __kasan_slab_free+0x34/0x70 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kmem_cache_free+0x102/0x2a0 mm/slub.c:4363 vma_lock_free kernel/fork.c:451 [inline] __vm_area_free+0xe0/0x110 kernel/fork.c:507 remove_vma mm/mmap.c:146 [inline] exit_mmap+0x6a9/0xd40 mm/mmap.c:3303 __mmput+0x115/0x3c0 kernel/fork.c:1343 exit_mm+0x21f/0x310 kernel/exit.c:569 do_exit+0x9af/0x2740 kernel/exit.c:858 do_group_exit+0x206/0x2c0 kernel/exit.c:1020 __do_sys_exit_group kernel/exit.c:1031 [inline] __se_sys_exit_group kernel/exit.c:1029 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1029 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 HARDIRQ-ON-R at: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228 ap_get drivers/net/ppp/ppp_async.c:137 [inline] ppp_asynctty_ioctl+0x36/0x3f0 drivers/net/ppp/ppp_async.c:286 tty_ioctl+0x99d/0xdc0 drivers/tty/tty_io.c:2812 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:857 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 INITIAL USE at: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:326 ppp_asynctty_close+0x29/0x190 drivers/net/ppp/ppp_async.c:220 tty_ldisc_kill+0xa3/0x1a0 drivers/tty/tty_ldisc.c:607 tty_ldisc_release+0x174/0x200 drivers/tty/tty_ldisc.c:775 tty_release_struct+0x2b/0xe0 drivers/tty/tty_io.c:1696 tty_release+0xd0c/0x12c0 drivers/tty/tty_io.c:1867 __fput+0x429/0x8a0 fs/file_table.c:376 __do_sys_close fs/open.c:1554 [inline] __se_sys_close fs/open.c:1539 [inline] __x64_sys_close+0x7e/0x110 fs/open.c:1539 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 INITIAL READ USE at: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228 ap_get drivers/net/ppp/ppp_async.c:137 [inline] ppp_asynctty_wakeup+0x20/0x210 drivers/net/ppp/ppp_async.c:353 tty_wakeup+0xbb/0x100 drivers/tty/tty_io.c:523 tty_port_default_wakeup+0xa6/0xf0 drivers/tty/tty_port.c:69 serial8250_tx_chars+0x6ad/0x8a0 drivers/tty/serial/8250/8250_port.c:1835 serial8250_handle_irq+0x558/0x710 drivers/tty/serial/8250/8250_port.c:1942 serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1962 serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:127 __handle_irq_event_percpu+0x289/0xa30 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210 handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0x138/0x230 arch/x86/kernel/irq.c:257 common_interrupt+0xa5/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:640 check_kcov_mode kernel/kcov.c:175 [inline] write_comp_data kernel/kcov.c:236 [inline] __sanitizer_cov_trace_cmp8+0x34/0x90 kernel/kcov.c:284 on_stack arch/x86/include/asm/stacktrace.h:60 [inline] unwind_next_frame+0x1df4/0x29e0 arch/x86/kernel/unwind_orc.c:665 arch_stack_walk+0x150/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x117/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:640 poison_slab_object+0xa6/0xe0 mm/kasan/common.c:241 __kasan_slab_free+0x34/0x70 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kmem_cache_free+0x102/0x2a0 mm/slub.c:4363 vma_lock_free kernel/fork.c:451 [inline] __vm_area_free+0xe0/0x110 kernel/fork.c:507 remove_vma mm/mmap.c:146 [inline] exit_mmap+0x6a9/0xd40 mm/mmap.c:3303 __mmput+0x115/0x3c0 kernel/fork.c:1343 exit_mm+0x21f/0x310 kernel/exit.c:569 do_exit+0x9af/0x2740 kernel/exit.c:858 do_group_exit+0x206/0x2c0 kernel/exit.c:1020 __do_sys_exit_group kernel/exit.c:1031 [inline] __se_sys_exit_group kernel/exit.c:1029 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1029 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 } ... key at: [<ffffffff8ebf32f8>] disc_data_lock+0x18/0x60 ... acquired at: mark_lock+0x223/0x350 kernel/locking/lockdep.c:4678 mark_usage kernel/locking/lockdep.c:4579 [inline] __lock_acquire+0x10e0/0x1fd0 kernel/locking/lockdep.c:5091 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228 ap_get drivers/net/ppp/ppp_async.c:137 [inline] ppp_asynctty_ioctl+0x36/0x3f0 drivers/net/ppp/ppp_async.c:286 tty_ioctl+0x99d/0xdc0 drivers/tty/tty_io.c:2812 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:857 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 stack backtrace: CPU: 1 PID: 9979 Comm: syz-executor.4 Not tainted 6.8.0-rc5-syzkaller-00002-gfca7526b7d89 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106 mark_lock_irq+0x867/0xc20 kernel/locking/lockdep.c:4236 mark_lock+0x223/0x350 kernel/locking/lockdep.c:4678 mark_usage kernel/locking/lockdep.c:4579 [inline] __lock_acquire+0x10e0/0x1fd0 kernel/locking/lockdep.c:5091 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228 ap_get drivers/net/ppp/ppp_async.c:137 [inline] ppp_asynctty_ioctl+0x36/0x3f0 drivers/net/ppp/ppp_async.c:286 tty_ioctl+0x99d/0xdc0 drivers/tty/tty_io.c:2812 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:857 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f4028e7dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4029c0b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f4028fabf80 RCX: 00007f4028e7dda9 RDX: 0000000000000000 RSI: 000000000000540b RDI: 0000000000000003 RBP: 00007f4028eca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f4028fabf80 R15: 00007ffc181829f8 </TASK> --- 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 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
