BUG: sleeping function called from invalid context at kernel/printk/printk.c:2659 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 6266, name: kworker/0:3 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 3 locks held by kworker/0:3/6266: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x668/0x15d4 kernel/workqueue.c:3228 #1: ffff80009f887c20 ((work_completion)(&gsm->tx_work)){+.+.}-{0:0}, at: process_one_work+0x6b4/0x15d4 kernel/workqueue.c:3228 #2: ffff0000c85a63e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write_task+0x44/0x89c drivers/tty/n_gsm.c:3494 irq event stamp: 31750 hardirqs last enabled at (31749): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (31749): [] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:202 hardirqs last disabled at (31750): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (31750): [] _raw_spin_lock_irqsave+0x2c/0x7c kernel/locking/spinlock.c:162 softirqs last enabled at (31740): [] local_bh_enable+0xc/0x2c include/linux/bottom_half.h:32 softirqs last disabled at (31736): [] local_bh_disable+0xc/0x2c include/linux/bottom_half.h:19 Preemption disabled at: [] gsmld_write_task+0x44/0x89c drivers/tty/n_gsm.c:3494 CPU: 0 PID: 6266 Comm: kworker/0:3 Not tainted 6.9.0-rc3-syzkaller-00024-gb5d2afe8745b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: events gsmld_write_task Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 __might_resched+0x374/0x4d0 kernel/sched/core.c:10197 __might_sleep+0x90/0xe4 kernel/sched/core.c:10126 console_lock+0x38/0x204 kernel/printk/printk.c:2659 do_con_write+0x130/0x3d28 drivers/tty/vt/vt.c:3056 con_write+0x34/0x58 drivers/tty/vt/vt.c:3434 gsmld_output drivers/tty/n_gsm.c:3461 [inline] gsm_send_packet+0x5d8/0x7b0 drivers/tty/n_gsm.c:964 gsm_data_kick drivers/tty/n_gsm.c:1026 [inline] gsmld_write_task+0x130/0x89c drivers/tty/n_gsm.c:3496 process_one_work+0x7b8/0x15d4 kernel/workqueue.c:3254 process_scheduled_works kernel/workqueue.c:3335 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:3416 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 BUG: sleeping function called from invalid context at kernel/printk/printk.c:2659 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 6266, name: kworker/0:3 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. irq event stamp: 31902 hardirqs last enabled at (31901): [] ___slab_alloc+0x5dc/0xeb0 mm/slub.c:3450 hardirqs last disabled at (31902): [] __schedule+0x2bc/0x24ec kernel/sched/core.c:6634 softirqs last enabled at (31894): [] ipv6_get_lladdr+0x270/0x3a8 net/ipv6/addrconf.c:1934 softirqs last disabled at (31892): [] ipv6_get_lladdr+0x148/0x3a8 net/ipv6/addrconf.c:1932 Preemption disabled at: [] gsmld_write_task+0x44/0x89c drivers/tty/n_gsm.c:3494 CPU: 0 PID: 6266 Comm: kworker/0:3 Tainted: G W 6.9.0-rc3-syzkaller-00024-gb5d2afe8745b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: events gsmld_write_task Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 __might_resched+0x374/0x4d0 kernel/sched/core.c:10197 __might_sleep+0x90/0xe4 kernel/sched/core.c:10126 console_lock+0x38/0x204 kernel/printk/printk.c:2659 do_con_write+0x130/0x3d28 drivers/tty/vt/vt.c:3056 con_write+0x34/0x58 drivers/tty/vt/vt.c:3434 gsmld_output drivers/tty/n_gsm.c:3461 [inline] gsm_send_packet+0x5d8/0x7b0 drivers/tty/n_gsm.c:964 gsm_data_kick drivers/tty/n_gsm.c:1026 [inline] gsmld_write_task+0x130/0x89c drivers/tty/n_gsm.c:3496 process_one_work+0x7b8/0x15d4 kernel/workqueue.c:3254 process_scheduled_works kernel/workqueue.c:3335 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:3416 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 BUG: sleeping function called from invalid context at kernel/printk/printk.c:2659 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 6266, name: kworker/0:3 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. irq event stamp: 31902 hardirqs last enabled at (31901): [] ___slab_alloc+0x5dc/0xeb0 mm/slub.c:3450 hardirqs last disabled at (31902): [] __schedule+0x2bc/0x24ec kernel/sched/core.c:6634 softirqs last enabled at (31894): [] ipv6_get_lladdr+0x270/0x3a8 net/ipv6/addrconf.c:1934 softirqs last disabled at (31892): [] ipv6_get_lladdr+0x148/0x3a8 net/ipv6/addrconf.c:1932 Preemption disabled at: [] gsmld_write_task+0x44/0x89c drivers/tty/n_gsm.c:3494 CPU: 0 PID: 6266 Comm: kworker/0:3 Tainted: G W 6.9.0-rc3-syzkaller-00024-gb5d2afe8745b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: events gsmld_write_task Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 __might_resched+0x374/0x4d0 kernel/sched/core.c:10197 __might_sleep+0x90/0xe4 kernel/sched/core.c:10126 console_lock+0x38/0x204 kernel/printk/printk.c:2659 do_con_write+0x130/0x3d28 drivers/tty/vt/vt.c:3056 con_write+0x34/0x58 drivers/tty/vt/vt.c:3434 gsmld_output drivers/tty/n_gsm.c:3461 [inline] gsm_send_packet+0x5d8/0x7b0 drivers/tty/n_gsm.c:964 gsm_data_kick drivers/tty/n_gsm.c:1026 [inline] gsmld_write_task+0x130/0x89c drivers/tty/n_gsm.c:3496 process_one_work+0x7b8/0x15d4 kernel/workqueue.c:3254 process_scheduled_works kernel/workqueue.c:3335 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:3416 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 BUG: sleeping function called from invalid context at kernel/printk/printk.c:2659 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 6266, name: kworker/0:3 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. irq event stamp: 31902 hardirqs last enabled at (31901): [] ___slab_alloc+0x5dc/0xeb0 mm/slub.c:3450 hardirqs last disabled at (31902): [] __schedule+0x2bc/0x24ec kernel/sched/core.c:6634 softirqs last enabled at (31894): [] ipv6_get_lladdr+0x270/0x3a8 net/ipv6/addrconf.c:1934 softirqs last disabled at (31892): [] ipv6_get_lladdr+0x148/0x3a8 net/ipv6/addrconf.c:1932 Preemption disabled at: [] gsmld_write_task+0x44/0x89c drivers/tty/n_gsm.c:3494 CPU: 0 PID: 6266 Comm: kworker/0:3 Tainted: G W 6.9.0-rc3-syzkaller-00024-gb5d2afe8745b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: events gsmld_write_task Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 __might_resched+0x374/0x4d0 kernel/sched/core.c:10197 __might_sleep+0x90/0xe4 kernel/sched/core.c:10126 console_lock+0x38/0x204 kernel/printk/printk.c:2659 do_con_write+0x130/0x3d28 drivers/tty/vt/vt.c:3056 con_write+0x34/0x58 drivers/tty/vt/vt.c:3434 gsmld_output drivers/tty/n_gsm.c:3461 [inline] gsm_send_packet+0x5d8/0x7b0 drivers/tty/n_gsm.c:964 gsm_data_kick drivers/tty/n_gsm.c:1026 [inline] gsmld_write_task+0x130/0x89c drivers/tty/n_gsm.c:3496 process_one_work+0x7b8/0x15d4 kernel/workqueue.c:3254 process_scheduled_works kernel/workqueue.c:3335 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:3416 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 BUG: sleeping function called from invalid context at kernel/printk/printk.c:2659 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 6266, name: kworker/0:3 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. irq event stamp: 31902 hardirqs last enabled at (31901): [] ___slab_alloc+0x5dc/0xeb0 mm/slub.c:3450 hardirqs last disabled at (31902): [] __schedule+0x2bc/0x24ec kernel/sched/core.c:6634 softirqs last enabled at (31894): [] ipv6_get_lladdr+0x270/0x3a8 net/ipv6/addrconf.c:1934 softirqs last disabled at (31892): [] ipv6_get_lladdr+0x148/0x3a8 net/ipv6/addrconf.c:1932 Preemption disabled at: [] gsmld_write_task+0x44/0x89c drivers/tty/n_gsm.c:3494 CPU: 0 PID: 6266 Comm: kworker/0:3 Tainted: G W 6.9.0-rc3-syzkaller-00024-gb5d2afe8745b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: events gsmld_write_task Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 __might_resched+0x374/0x4d0 kernel/sched/core.c:10197 __might_sleep+0x90/0xe4 kernel/sched/core.c:10126 console_lock+0x38/0x204 kernel/printk/printk.c:2659 do_con_write+0x130/0x3d28 drivers/tty/vt/vt.c:3056 con_write+0x34/0x58 drivers/tty/vt/vt.c:3434 gsmld_output drivers/tty/n_gsm.c:3461 [inline] gsm_send_packet+0x5d8/0x7b0 drivers/tty/n_gsm.c:964 gsm_data_kick drivers/tty/n_gsm.c:1026 [inline] gsmld_write_task+0x130/0x89c drivers/tty/n_gsm.c:3496 process_one_work+0x7b8/0x15d4 kernel/workqueue.c:3254 process_scheduled_works kernel/workqueue.c:3335 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:3416 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860