Hello, syzbot found the following issue on: HEAD commit: de9c2c66ad8e Linux 6.11-rc2 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=105ac8f3980000 kernel config: https://syzkaller.appspot.com/x/.config?x=505ed4a1dd93463a dashboard link: https://syzkaller.appspot.com/bug?extid=e8b864815e5e34554211 compiler: gcc (Debian 12.2.0-14) 12.2.0, 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/dc943231c101/disk-de9c2c66.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c48115bc34cd/vmlinux-de9c2c66.xz kernel image: https://storage.googleapis.com/syzbot-assets/f08b2b00add3/bzImage-de9c2c66.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e8b864815e5e34554211@xxxxxxxxxxxxxxxxxxxxxxxxx ===================================================== WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected 6.11.0-rc2-syzkaller #0 Not tainted ----------------------------------------------------- syz.2.1316/10260 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: and this task is already holding: which would create a new lock dependency: but this new dependency connects a HARDIRQ-irq-safe lock: (&dev->event_lock#2){-.-.}-{2:2} ... which became HARDIRQ-irq-safe at: psmouse_handle_byte+0x44/0x570 drivers/input/mouse/psmouse-base.c:279 psmouse_receive_byte+0x243/0xe20 drivers/input/mouse/psmouse-base.c:426 ps2_interrupt+0x20b/0x5b0 drivers/input/serio/libps2.c:613 serio_interrupt+0x8f/0x150 drivers/input/serio/serio.c:998 i8042_interrupt+0x3f5/0x8a0 drivers/input/serio/i8042.c:606 __handle_irq_event_percpu+0x229/0x7c0 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210 handle_edge_irq+0x263/0xd10 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline] handle_irq arch/x86/kernel/irq.c:247 [inline] call_irq_handler arch/x86/kernel/irq.c:259 [inline] __common_interrupt+0xdf/0x250 arch/x86/kernel/irq.c:285 common_interrupt+0xab/0xd0 arch/x86/kernel/irq.c:278 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] i8042_command drivers/input/serio/i8042.c:356 [inline] i8042_aux_write+0x11a/0x180 drivers/input/serio/i8042.c:391 serio_write include/linux/serio.h:125 [inline] ps2_do_sendbyte+0x264/0x6f0 drivers/input/serio/libps2.c:58 ps2_sendbyte+0x59/0x150 drivers/input/serio/libps2.c:113 cypress_ps2_sendbyte+0x2c/0xf0 drivers/input/mouse/cypress_ps2.c:43 cypress_ps2_read_cmd_status drivers/input/mouse/cypress_ps2.c:111 [inline] cypress_send_ext_cmd+0x1dc/0xa30 drivers/input/mouse/cypress_ps2.c:182 cypress_detect+0x8c/0x1a0 drivers/input/mouse/cypress_ps2.c:195 psmouse_do_detect drivers/input/mouse/psmouse-base.c:1006 [inline] psmouse_try_protocol+0x21b/0x380 drivers/input/mouse/psmouse-base.c:1020 psmouse_extensions+0x61a/0x960 drivers/input/mouse/psmouse-base.c:1143 psmouse_switch_protocol+0x538/0x750 drivers/input/mouse/psmouse-base.c:1537 psmouse_connect+0x5cc/0xf80 drivers/input/mouse/psmouse-base.c:1626 serio_connect_driver drivers/input/serio/serio.c:44 [inline] serio_driver_probe+0x74/0xa0 drivers/input/serio/serio.c:775 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __driver_attach+0x283/0x580 drivers/base/dd.c:1215 bus_for_each_dev+0x13c/0x1d0 drivers/base/bus.c:368 serio_attach_driver drivers/input/serio/serio.c:804 [inline] serio_handle_event+0x2bb/0xa90 drivers/input/serio/serio.c:224 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 to a HARDIRQ-irq-unsafe lock: (tasklist_lock){.+.+}-{2:2} ... which became HARDIRQ-irq-unsafe at: ... lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 __do_wait+0x105/0x890 kernel/exit.c:1591 do_wait+0x219/0x570 kernel/exit.c:1635 kernel_wait+0xa0/0x160 kernel/exit.c:1811 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 other info that might help us debug this: Chain exists of: &dev->event_lock#2 --> &f->f_owner.lock --> tasklist_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(tasklist_lock); local_irq_disable(); lock(&dev->event_lock#2); lock(&f->f_owner.lock); <Interrupt> lock(&dev->event_lock#2); *** DEADLOCK *** 6 locks held by syz.2.1316/10260: #0: ffff88807ac80420 (sb_writers#6){.+.+}-{0:0}, at: vfs_truncate+0xea/0x4e0 fs/open.c:84 #1: ffffffff8dfcf7b0 (file_rwsem){++++}-{0:0}, at: break_lease include/linux/filelock.h:431 [inline] #1: ffffffff8dfcf7b0 (file_rwsem){++++}-{0:0}, at: break_lease include/linux/filelock.h:421 [inline] #1: ffffffff8dfcf7b0 (file_rwsem){++++}-{0:0}, at: vfs_truncate+0x32e/0x4e0 fs/open.c:105 #2: ffff88807c2cd018 (&ctx->flc_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #2: ffff88807c2cd018 (&ctx->flc_lock){+.+.}-{2:2}, at: __break_lease+0x49b/0x17d0 fs/locks.c:1564 #3: ffffffff8ddb5ca0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] #3: ffffffff8ddb5ca0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] #3: ffffffff8ddb5ca0 (rcu_read_lock){....}-{1:2}, at: kill_fasync fs/fcntl.c:1048 [inline] #3: ffffffff8ddb5ca0 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x6d/0x4f0 fs/fcntl.c:1042 #4: ffff888023e29210 (&new->fa_lock){....}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1028 [inline] #4: ffff888023e29210 (&new->fa_lock){....}-{2:2}, at: kill_fasync fs/fcntl.c:1049 [inline] #4: ffff888023e29210 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x138/0x4f0 fs/fcntl.c:1042 #5: ffff88805dc6d518 (&f->f_owner.lock){....}-{2:2}, at: send_sigio+0x28/0x3c0 fs/fcntl.c:816 the dependencies between HARDIRQ-irq-safe lock and the holding lock: -> (&dev->event_lock#2){-.-.}-{2:2} { IN-HARDIRQ-W at: lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 input_event drivers/input/input.c:397 [inline] input_event+0x70/0xa0 drivers/input/input.c:390 input_report_key include/linux/input.h:426 [inline] psmouse_report_standard_buttons+0x30/0x80 drivers/input/mouse/psmouse-base.c:128 psmouse_report_standard_packet drivers/input/mouse/psmouse-base.c:146 [inline] psmouse_process_byte+0x39c/0x8a0 drivers/input/mouse/psmouse-base.c:237 psmouse_handle_byte+0x44/0x570 drivers/input/mouse/psmouse-base.c:279 psmouse_receive_byte+0x243/0xe20 drivers/input/mouse/psmouse-base.c:426 ps2_interrupt+0x20b/0x5b0 drivers/input/serio/libps2.c:613 serio_interrupt+0x8f/0x150 drivers/input/serio/serio.c:998 i8042_interrupt+0x3f5/0x8a0 drivers/input/serio/i8042.c:606 __handle_irq_event_percpu+0x229/0x7c0 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210 handle_edge_irq+0x263/0xd10 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline] handle_irq arch/x86/kernel/irq.c:247 [inline] call_irq_handler arch/x86/kernel/irq.c:259 [inline] __common_interrupt+0xdf/0x250 arch/x86/kernel/irq.c:285 common_interrupt+0xab/0xd0 arch/x86/kernel/irq.c:278 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] i8042_command drivers/input/serio/i8042.c:356 [inline] i8042_aux_write+0x11a/0x180 drivers/input/serio/i8042.c:391 serio_write include/linux/serio.h:125 [inline] ps2_do_sendbyte+0x264/0x6f0 drivers/input/serio/libps2.c:58 ps2_sendbyte+0x59/0x150 drivers/input/serio/libps2.c:113 cypress_ps2_sendbyte+0x2c/0xf0 drivers/input/mouse/cypress_ps2.c:43 cypress_ps2_read_cmd_status drivers/input/mouse/cypress_ps2.c:111 [inline] cypress_send_ext_cmd+0x1dc/0xa30 drivers/input/mouse/cypress_ps2.c:182 cypress_detect+0x8c/0x1a0 drivers/input/mouse/cypress_ps2.c:195 psmouse_do_detect drivers/input/mouse/psmouse-base.c:1006 [inline] psmouse_try_protocol+0x21b/0x380 drivers/input/mouse/psmouse-base.c:1020 psmouse_extensions+0x61a/0x960 drivers/input/mouse/psmouse-base.c:1143 psmouse_switch_protocol+0x538/0x750 drivers/input/mouse/psmouse-base.c:1537 psmouse_connect+0x5cc/0xf80 drivers/input/mouse/psmouse-base.c:1626 serio_connect_driver drivers/input/serio/serio.c:44 [inline] serio_driver_probe+0x74/0xa0 drivers/input/serio/serio.c:775 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __driver_attach+0x283/0x580 drivers/base/dd.c:1215 bus_for_each_dev+0x13c/0x1d0 drivers/base/bus.c:368 serio_attach_driver drivers/input/serio/serio.c:804 [inline] serio_handle_event+0x2bb/0xa90 drivers/input/serio/serio.c:224 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 IN-SOFTIRQ-W at: lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 input_inject_event+0xa4/0x370 drivers/input/input.c:423 __led_set_brightness drivers/leds/led-core.c:52 [inline] led_set_brightness_nopm drivers/leds/led-core.c:323 [inline] led_set_brightness_nosleep drivers/leds/led-core.c:354 [inline] led_set_brightness+0x211/0x290 drivers/leds/led-core.c:316 led_trigger_event drivers/leds/led-triggers.c:407 [inline] led_trigger_event+0xda/0x270 drivers/leds/led-triggers.c:395 kbd_propagate_led_state drivers/tty/vt/keyboard.c:1080 [inline] kbd_bh+0x21b/0x300 drivers/tty/vt/keyboard.c:1269 tasklet_action_common.constprop.0+0x24c/0x3e0 kernel/softirq.c:785 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 lock_acquire+0xef/0x560 kernel/locking/lockdep.c:5732 rcu_lock_acquire include/linux/rcupdate.h:326 [inline] rcu_read_lock_sched include/linux/rcupdate.h:930 [inline] pfn_valid include/linux/mmzone.h:2024 [inline] page_table_check_clear mm/page_table_check.c:70 [inline] __page_table_check_pte_clear+0x1c0/0x580 mm/page_table_check.c:169 page_table_check_pte_clear include/linux/page_table_check.h:49 [inline] ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1284 [inline] get_and_clear_full_ptes include/linux/pgtable.h:678 [inline] zap_present_folio_ptes mm/memory.c:1493 [inline] zap_present_ptes mm/memory.c:1576 [inline] zap_pte_range mm/memory.c:1618 [inline] zap_pmd_range mm/memory.c:1736 [inline] zap_pud_range mm/memory.c:1765 [inline] zap_p4d_range mm/memory.c:1786 [inline] unmap_page_range+0x21ac/0x3c10 mm/memory.c:1807 unmap_single_vma+0x194/0x2b0 mm/memory.c:1853 unmap_vmas+0x22f/0x490 mm/memory.c:1897 exit_mmap+0x1b8/0xb20 mm/mmap.c:3412 __mmput+0x12a/0x480 kernel/fork.c:1345 mmput+0x62/0x70 kernel/fork.c:1367 exit_mm kernel/exit.c:571 [inline] do_exit+0x9bf/0x2bb0 kernel/exit.c:869 do_group_exit+0xd3/0x2a0 kernel/exit.c:1031 get_signal+0x25fd/0x2770 kernel/signal.c:2917 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 input_inject_event+0xa4/0x370 drivers/input/input.c:423 __led_set_brightness drivers/leds/led-core.c:52 [inline] led_set_brightness_nopm drivers/leds/led-core.c:323 [inline] led_set_brightness_nosleep drivers/leds/led-core.c:354 [inline] led_set_brightness+0x211/0x290 drivers/leds/led-core.c:316 kbd_led_trigger_activate+0xcb/0x110 drivers/tty/vt/keyboard.c:1036 led_trigger_set+0x59a/0xc60 drivers/leds/led-triggers.c:212 led_match_default_trigger drivers/leds/led-triggers.c:269 [inline] led_match_default_trigger drivers/leds/led-triggers.c:263 [inline] led_trigger_set_default drivers/leds/led-triggers.c:287 [inline] led_trigger_set_default+0x1bd/0x2a0 drivers/leds/led-triggers.c:276 led_classdev_register_ext+0x78c/0x9e0 drivers/leds/led-class.c:555 led_classdev_register include/linux/leds.h:273 [inline] input_leds_connect+0x54a/0x8e0 drivers/input/input-leds.c:145 input_attach_handler.isra.0+0x181/0x260 drivers/input/input.c:1027 input_register_device+0xa8e/0x1140 drivers/input/input.c:2473 atkbd_connect+0x5e2/0xa20 drivers/input/keyboard/atkbd.c:1342 serio_connect_driver drivers/input/serio/serio.c:44 [inline] serio_driver_probe+0x74/0xa0 drivers/input/serio/serio.c:775 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __driver_attach+0x283/0x580 drivers/base/dd.c:1215 bus_for_each_dev+0x13c/0x1d0 drivers/base/bus.c:368 serio_attach_driver drivers/input/serio/serio.c:804 [inline] serio_handle_event+0x2bb/0xa90 drivers/input/serio/serio.c:224 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 } ... key at: [<ffffffff951ecaa0>] __key.7+0x0/0x40 -> (&new->fa_lock){....}-{2:2} { INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x36/0x50 kernel/locking/spinlock.c:326 fasync_remove_entry+0xb9/0x1f0 fs/fcntl.c:905 fasync_helper+0xaf/0xd0 fs/fcntl.c:1008 sock_fasync+0x98/0x140 net/socket.c:1446 __fput+0x94a/0xbb0 fs/file_table.c:419 task_work_run+0x14e/0x250 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x74/0x90 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:1028 [inline] kill_fasync fs/fcntl.c:1049 [inline] kill_fasync+0x138/0x4f0 fs/fcntl.c:1042 sock_wake_async+0x132/0x160 net/socket.c:1475 sk_wake_async include/net/sock.h:2440 [inline] sk_wake_async include/net/sock.h:2436 [inline] unix_release_sock+0xb1d/0x1280 net/unix/af_unix.c:713 unix_release+0x91/0xf0 net/unix/af_unix.c:1112 __sock_release+0xb0/0x270 net/socket.c:659 sock_close+0x1c/0x30 net/socket.c:1421 __fput+0x408/0xbb0 fs/file_table.c:422 task_work_run+0x14e/0x250 kernel/task_work.c:228 get_signal+0x1ca/0x2770 kernel/signal.c:2689 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f } ... key at: [<ffffffff94f37c00>] __key.0+0x0/0x40 ... acquired at: __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x74/0x90 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:1028 [inline] kill_fasync fs/fcntl.c:1049 [inline] kill_fasync+0x138/0x4f0 fs/fcntl.c:1042 mousedev_notify_readers+0x6d9/0xa30 drivers/input/mousedev.c:309 mousedev_event+0x84e/0x1490 drivers/input/mousedev.c:394 input_handler_events_default+0x116/0x1b0 drivers/input/input.c:2552 input_pass_values+0x777/0x8e0 drivers/input/input.c:126 input_event_dispose drivers/input/input.c:341 [inline] input_handle_event+0xf0b/0x14d0 drivers/input/input.c:369 input_inject_event+0x1bb/0x370 drivers/input/input.c:428 evdev_write+0x450/0x750 drivers/input/evdev.c:521 vfs_write+0x29a/0x1140 fs/read_write.c:588 ksys_write+0x1f8/0x260 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> (&f->f_owner.lock){....}-{2:2} { INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x36/0x50 kernel/locking/spinlock.c:326 f_modown+0x2a/0x380 fs/fcntl.c:93 __f_setown fs/fcntl.c:112 [inline] f_setown+0xd4/0x2a0 fs/fcntl.c:140 do_fcntl+0x11f7/0x1380 fs/fcntl.c:412 __do_sys_fcntl fs/fcntl.c:492 [inline] __se_sys_fcntl fs/fcntl.c:477 [inline] __x64_sys_fcntl+0x174/0x200 fs/fcntl.c:477 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_read_lock_irq include/linux/rwlock_api_smp.h:169 [inline] _raw_read_lock_irq+0x67/0x80 kernel/locking/spinlock.c:244 f_getown_ex fs/fcntl.c:214 [inline] do_fcntl+0x787/0x1380 fs/fcntl.c:415 __do_sys_fcntl fs/fcntl.c:492 [inline] __se_sys_fcntl fs/fcntl.c:477 [inline] __x64_sys_fcntl+0x174/0x200 fs/fcntl.c:477 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f } ... key at: [<ffffffff94f36ea0>] __key.2+0x0/0x40 ... acquired at: __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x74/0x90 kernel/locking/spinlock.c:236 send_sigio+0x28/0x3c0 fs/fcntl.c:816 kill_fasync_rcu fs/fcntl.c:1035 [inline] kill_fasync fs/fcntl.c:1049 [inline] kill_fasync+0x1f6/0x4f0 fs/fcntl.c:1042 sock_wake_async+0x132/0x160 net/socket.c:1475 sk_wake_async include/net/sock.h:2440 [inline] sk_wake_async include/net/sock.h:2436 [inline] unix_release_sock+0xb1d/0x1280 net/unix/af_unix.c:713 unix_release+0x91/0xf0 net/unix/af_unix.c:1112 __sock_release+0xb0/0x270 net/socket.c:659 sock_close+0x1c/0x30 net/socket.c:1421 __fput+0x408/0xbb0 fs/file_table.c:422 task_work_run+0x14e/0x250 kernel/task_work.c:228 get_signal+0x1ca/0x2770 kernel/signal.c:2689 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f the dependencies between the lock to be acquired and HARDIRQ-irq-unsafe lock: -> (tasklist_lock){.+.+}-{2:2} { HARDIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 __do_wait+0x105/0x890 kernel/exit.c:1591 do_wait+0x219/0x570 kernel/exit.c:1635 kernel_wait+0xa0/0x160 kernel/exit.c:1811 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 SOFTIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 __do_wait+0x105/0x890 kernel/exit.c:1591 do_wait+0x219/0x570 kernel/exit.c:1635 kernel_wait+0xa0/0x160 kernel/exit.c:1811 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x36/0x50 kernel/locking/spinlock.c:326 copy_process+0x4420/0x8de0 kernel/fork.c:2500 kernel_clone+0xfd/0x980 kernel/fork.c:2781 user_mode_thread+0xb4/0xf0 kernel/fork.c:2859 rest_init+0x23/0x2b0 init/main.c:712 start_kernel+0x3df/0x4c0 init/main.c:1103 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:488 common_startup_64+0x13e/0x148 INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 __do_wait+0x105/0x890 kernel/exit.c:1591 do_wait+0x219/0x570 kernel/exit.c:1635 kernel_wait+0xa0/0x160 kernel/exit.c:1811 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 } ... key at: [<ffffffff8da0a098>] tasklist_lock+0x18/0x40 ... acquired at: lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 send_sigio+0xb4/0x3c0 fs/fcntl.c:830 kill_fasync_rcu fs/fcntl.c:1035 [inline] kill_fasync fs/fcntl.c:1049 [inline] kill_fasync+0x1f6/0x4f0 fs/fcntl.c:1042 lease_break_callback+0x23/0x30 fs/locks.c:558 __break_lease+0x67c/0x17d0 fs/locks.c:1592 break_lease include/linux/filelock.h:431 [inline] break_lease include/linux/filelock.h:421 [inline] vfs_truncate+0x32e/0x4e0 fs/open.c:105 do_sys_truncate fs/open.c:134 [inline] __do_sys_truncate fs/open.c:146 [inline] __se_sys_truncate fs/open.c:144 [inline] __x64_sys_truncate+0x174/0x1e0 fs/open.c:144 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f stack backtrace: CPU: 0 UID: 0 PID: 10260 Comm: syz.2.1316 Not tainted 6.11.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119 print_bad_irq_dependency kernel/locking/lockdep.c:2625 [inline] check_irq_usage+0xe3c/0x1490 kernel/locking/lockdep.c:2864 check_prev_add kernel/locking/lockdep.c:3137 [inline] check_prevs_add kernel/locking/lockdep.c:3252 [inline] validate_chain kernel/locking/lockdep.c:3868 [inline] __lock_acquire+0x2503/0x3cb0 kernel/locking/lockdep.c:5142 lock_acquire kernel/locking/lockdep.c:5759 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 send_sigio+0xb4/0x3c0 fs/fcntl.c:830 kill_fasync_rcu fs/fcntl.c:1035 [inline] kill_fasync fs/fcntl.c:1049 [inline] kill_fasync+0x1f6/0x4f0 fs/fcntl.c:1042 lease_break_callback+0x23/0x30 fs/locks.c:558 __break_lease+0x67c/0x17d0 fs/locks.c:1592 break_lease include/linux/filelock.h:431 [inline] break_lease include/linux/filelock.h:421 [inline] vfs_truncate+0x32e/0x4e0 fs/open.c:105 do_sys_truncate fs/open.c:134 [inline] __do_sys_truncate fs/open.c:146 [inline] __se_sys_truncate fs/open.c:144 [inline] __x64_sys_truncate+0x174/0x1e0 fs/open.c:144 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fab6db779f9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fab6e94d048 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00007fab6dd05f80 RCX: 00007fab6db779f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007fab6dbe58ee R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fab6dd05f80 R15: 00007fff86339048 </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
