BUG: sleeping function called from invalid context at kernel/workqueue.c:3414 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 11266, name: syz.6.1548 preempt_count: 101, expected: 0 RCU nest depth: 0, expected: 0 3 locks held by syz.6.1548/11266: #0: ffffffff8d126180 (console_lock){+.+.}-{0:0}, at: _printk+0xde/0x130 kernel/printk/printk.c:2366 #1: ffffffff8d00d990 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:339 [inline] #1: ffffffff8d00d990 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:232 [inline] #1: ffffffff8d00d990 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:292 [inline] #1: ffffffff8d00d990 (console_srcu){....}-{0:0}, at: console_flush_all+0x10b/0xcf0 kernel/printk/printk.c:2992 #2: ffffc90000007be0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd2/0x540 kernel/time/timer.c:1698 Preemption disabled at: [] vprintk_emit+0x146/0x610 kernel/printk/printk.c:2333 CPU: 0 PID: 11266 Comm: syz.6.1548 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 __might_resched+0x48d/0x5f0 kernel/sched/core.c:10212 start_flush_work kernel/workqueue.c:3414 [inline] __flush_work+0x10f/0xac0 kernel/workqueue.c:3474 __cancel_work_timer+0x3f8/0x560 kernel/workqueue.c:3562 mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:694 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x570/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:console_flush_all+0x883/0xcf0 arch/x86/include/asm/irqflags.h:-1 Code: ed 01 00 00 e8 2e 7f 1b 00 4d 85 ff 48 8b 5c 24 38 75 07 e8 1f 7f 1b 00 eb 06 e8 18 7f 1b 00 fb 49 bf 00 00 00 00 00 fc ff df <48> 8b 44 24 58 42 0f b6 04 38 84 c0 0f 85 2f 02 00 00 80 3b 01 0f RSP: 0018:ffffc900032f7580 EFLAGS: 00000287 RAX: ffffffff816bf358 RBX: ffffc900032f76ff RCX: 0000000000080000 RDX: ffffc9000d23b000 RSI: 0000000000004f10 RDI: 0000000000004f11 RBP: ffffc900032f76d0 R08: ffffffff911ef507 R09: 1ffffffff223dea0 R10: dffffc0000000000 R11: fffffbfff223dea1 R12: ffffffff8d8cd900 R13: 1ffffffff19f96d8 R14: ffffffff8d8cd958 R15: dffffc0000000000 console_unlock+0xad/0x350 kernel/printk/printk.c:3069 vprintk_emit+0x497/0x610 kernel/printk/printk.c:2341 _printk+0xde/0x130 kernel/printk/printk.c:2366 __ext4_msg+0x22d/0x2c0 fs/ext4/super.c:1009 note_qf_name+0xd1/0x240 fs/ext4/super.c:-1 ext4_parse_param+0xa61/0x2450 fs/ext4/super.c:-1 vfs_parse_fs_param+0x1a0/0x420 fs/fs_context.c:146 vfs_parse_fs_string fs/fs_context.c:188 [inline] vfs_parse_monolithic_sep+0x25f/0x330 fs/fs_context.c:230 do_new_mount+0x21a/0xa40 fs/namespace.c:3382 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb6ffd9f3ca Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb700ccee58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fb700cceee0 RCX: 00007fb6ffd9f3ca RDX: 0000200000000100 RSI: 0000200000000280 RDI: 00007fb700cceea0 RBP: 0000200000000100 R08: 00007fb700cceee0 R09: 000000000280440e R10: 000000000280440e R11: 0000000000000246 R12: 0000200000000280 R13: 00007fb700cceea0 R14: 0000000000000bde R15: 000000000000002c ================================ WARNING: inconsistent lock state syzkaller #0 Tainted: G W -------------------------------- inconsistent {SOFTIRQ-ON-R} -> {IN-SOFTIRQ-W} usage. syz.6.1548/11266 [HC0[0]:SC1[1]:HE1:SE0] takes: ffffffff8da24830 (wakeup_srcu){.+-+}-{0:0}, at: srcu_lock_sync include/linux/srcu.h:128 [inline] ffffffff8da24830 (wakeup_srcu){.+-+}-{0:0}, at: __synchronize_srcu+0xae/0x3d0 kernel/rcu/srcutree.c:1371 {SOFTIRQ-ON-R} state was registered at: lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754 srcu_lock_acquire include/linux/srcu.h:116 [inline] srcu_read_lock include/linux/srcu.h:215 [inline] pm_print_active_wakeup_sources+0x5d/0x310 drivers/base/power/wakeup.c:846 pm_get_wakeup_count+0x1cf/0x300 drivers/base/power/wakeup.c:978 wakeup_count_show+0x86/0xf0 kernel/power/main.c:757 sysfs_kf_seq_show+0x34d/0x4c0 fs/sysfs/file.c:59 seq_read_iter+0x464/0xc50 fs/seq_file.c:230 call_read_iter include/linux/fs.h:2012 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x486/0x990 fs/read_write.c:470 ksys_read+0x151/0x260 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 irq event stamp: 9790 hardirqs last enabled at (9790): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (9790): [] _raw_spin_unlock_irqrestore+0x86/0x120 kernel/locking/spinlock.c:194 hardirqs last disabled at (9789): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (9789): [] _raw_spin_lock_irqsave+0x8f/0x100 kernel/locking/spinlock.c:162 softirqs last enabled at (9552): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last enabled at (9552): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last enabled at (9552): [] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 softirqs last disabled at (9567): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last disabled at (9567): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last disabled at (9567): [] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(wakeup_srcu); lock(wakeup_srcu); *** DEADLOCK *** 3 locks held by syz.6.1548/11266: #0: ffffffff8d126180 (console_lock){+.+.}-{0:0}, at: _printk+0xde/0x130 kernel/printk/printk.c:2366 #1: ffffffff8d00d990 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:339 [inline] #1: ffffffff8d00d990 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:232 [inline] #1: ffffffff8d00d990 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:292 [inline] #1: ffffffff8d00d990 (console_srcu){....}-{0:0}, at: console_flush_all+0x10b/0xcf0 kernel/printk/printk.c:2992 #2: ffffc90000007be0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd2/0x540 kernel/time/timer.c:1698 stack backtrace: CPU: 0 PID: 11266 Comm: syz.6.1548 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 valid_state+0x13b/0x1d0 kernel/locking/lockdep.c:4013 mark_lock_irq+0xd3/0x900 kernel/locking/lockdep.c:4222 mark_lock+0x208/0x320 kernel/locking/lockdep.c:4678 mark_usage kernel/locking/lockdep.c:-1 [inline] __lock_acquire+0xcfc/0x7d80 kernel/locking/lockdep.c:5091 lock_sync+0x155/0x290 kernel/locking/lockdep.c:5801 srcu_lock_sync include/linux/srcu.h:128 [inline] __synchronize_srcu+0xc2/0x3d0 kernel/rcu/srcutree.c:1371 wakeup_source_remove drivers/base/power/wakeup.c:198 [inline] wakeup_source_unregister+0x116/0x190 drivers/base/power/wakeup.c:242 mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:77 device_release+0xbc/0x1e0 drivers/base/core.c:-1 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x21b/0x450 lib/kobject.c:737 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x570/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:console_flush_all+0x883/0xcf0 arch/x86/include/asm/irqflags.h:-1 Code: ed 01 00 00 e8 2e 7f 1b 00 4d 85 ff 48 8b 5c 24 38 75 07 e8 1f 7f 1b 00 eb 06 e8 18 7f 1b 00 fb 49 bf 00 00 00 00 00 fc ff df <48> 8b 44 24 58 42 0f b6 04 38 84 c0 0f 85 2f 02 00 00 80 3b 01 0f RSP: 0018:ffffc900032f7580 EFLAGS: 00000287 RAX: ffffffff816bf358 RBX: ffffc900032f76ff RCX: 0000000000080000 RDX: ffffc9000d23b000 RSI: 0000000000004f10 RDI: 0000000000004f11 RBP: ffffc900032f76d0 R08: ffffffff911ef507 R09: 1ffffffff223dea0 R10: dffffc0000000000 R11: fffffbfff223dea1 R12: ffffffff8d8cd900 R13: 1ffffffff19f96d8 R14: ffffffff8d8cd958 R15: dffffc0000000000 console_unlock+0xad/0x350 kernel/printk/printk.c:3069 vprintk_emit+0x497/0x610 kernel/printk/printk.c:2341 _printk+0xde/0x130 kernel/printk/printk.c:2366 __ext4_msg+0x22d/0x2c0 fs/ext4/super.c:1009 note_qf_name+0xd1/0x240 fs/ext4/super.c:-1 ext4_parse_param+0xa61/0x2450 fs/ext4/super.c:-1 vfs_parse_fs_param+0x1a0/0x420 fs/fs_context.c:146 vfs_parse_fs_string fs/fs_context.c:188 [inline] vfs_parse_monolithic_sep+0x25f/0x330 fs/fs_context.c:230 do_new_mount+0x21a/0xa40 fs/namespace.c:3382 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb6ffd9f3ca Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb700ccee58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fb700cceee0 RCX: 00007fb6ffd9f3ca RDX: 0000200000000100 RSI: 0000200000000280 RDI: 00007fb700cceea0 RBP: 0000200000000100 R08: 00007fb700cceee0 R09: 000000000280440e R10: 000000000280440e R11: 0000000000000246 R12: 0000200000000280 R13: 00007fb700cceea0 R14: 0000000000000bde R15: 000000000000002c ODEBUG: object ffffc900000079c0 is NOT on stack ffffc900032f0000, but annotated. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 11266 at lib/debugobjects.c:558 debug_object_is_on_stack lib/debugobjects.c:-1 [inline] WARNING: CPU: 0 PID: 11266 at lib/debugobjects.c:558 lookup_object_or_alloc lib/debugobjects.c:591 [inline] WARNING: CPU: 0 PID: 11266 at lib/debugobjects.c:558 __debug_object_init+0x18d/0x450 lib/debugobjects.c:672 Modules linked in: CPU: 0 PID: 11266 Comm: syz.6.1548 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:debug_object_is_on_stack lib/debugobjects.c:558 [inline] RIP: 0010:lookup_object_or_alloc lib/debugobjects.c:591 [inline] RIP: 0010:__debug_object_init+0x18d/0x450 lib/debugobjects.c:672 Code: 24 08 74 2f 41 ff c6 44 89 35 7f 11 26 13 48 c7 c1 00 3c 1d 8b 48 c7 c7 60 3c 1d 8b 84 c0 48 0f 45 f9 48 89 de e8 a3 5e 49 06 <0f> 0b eb 05 4c 8b 7c 24 18 4d 8d 65 10 4d 89 e6 49 c1 ee 03 41 0f RSP: 0018:ffffc90000007928 EFLAGS: 00010046 RAX: 0000000000000050 RBX: ffffc900000079c0 RCX: bef2513df7d86100 RDX: 0000000000000100 RSI: 0000000000000102 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff8d126043 R09: 1ffffffff1a24c08 R10: dffffc0000000000 R11: fffffbfff1a24c09 R12: ffff888030231e20 R13: ffff888026bfd578 R14: 0000000000000001 R15: ffffffff8acbdf00 FS: 00007fb700ccf6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9a10a7be00 CR3: 000000006141d000 CR4: 00000000003506f0 Call Trace: __synchronize_srcu+0x2ae/0x3d0 kernel/rcu/srcutree.c:1384 wakeup_source_remove drivers/base/power/wakeup.c:198 [inline] wakeup_source_unregister+0x116/0x190 drivers/base/power/wakeup.c:242 mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:77 device_release+0xbc/0x1e0 drivers/base/core.c:-1 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x21b/0x450 lib/kobject.c:737 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x570/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:console_flush_all+0x883/0xcf0 arch/x86/include/asm/irqflags.h:-1 Code: ed 01 00 00 e8 2e 7f 1b 00 4d 85 ff 48 8b 5c 24 38 75 07 e8 1f 7f 1b 00 eb 06 e8 18 7f 1b 00 fb 49 bf 00 00 00 00 00 fc ff df <48> 8b 44 24 58 42 0f b6 04 38 84 c0 0f 85 2f 02 00 00 80 3b 01 0f RSP: 0018:ffffc900032f7580 EFLAGS: 00000287 RAX: ffffffff816bf358 RBX: ffffc900032f76ff RCX: 0000000000080000 RDX: ffffc9000d23b000 RSI: 0000000000004f10 RDI: 0000000000004f11 RBP: ffffc900032f76d0 R08: ffffffff911ef507 R09: 1ffffffff223dea0 R10: dffffc0000000000 R11: fffffbfff223dea1 R12: ffffffff8d8cd900 R13: 1ffffffff19f96d8 R14: ffffffff8d8cd958 R15: dffffc0000000000 console_unlock+0xad/0x350 kernel/printk/printk.c:3069 vprintk_emit+0x497/0x610 kernel/printk/printk.c:2341 _printk+0xde/0x130 kernel/printk/printk.c:2366 __ext4_msg+0x22d/0x2c0 fs/ext4/super.c:1009 note_qf_name+0xd1/0x240 fs/ext4/super.c:-1 ext4_parse_param+0xa61/0x2450 fs/ext4/super.c:-1 vfs_parse_fs_param+0x1a0/0x420 fs/fs_context.c:146 vfs_parse_fs_string fs/fs_context.c:188 [inline] vfs_parse_monolithic_sep+0x25f/0x330 fs/fs_context.c:230 do_new_mount+0x21a/0xa40 fs/namespace.c:3382 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb6ffd9f3ca Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb700ccee58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fb700cceee0 RCX: 00007fb6ffd9f3ca RDX: 0000200000000100 RSI: 0000200000000280 RDI: 00007fb700cceea0 RBP: 0000200000000100 R08: 00007fb700cceee0 R09: 000000000280440e R10: 000000000280440e R11: 0000000000000246 R12: 0000200000000280 R13: 00007fb700cceea0 R14: 0000000000000bde R15: 000000000000002c ---------------- Code disassembly (best guess): 0: ed in (%dx),%eax 1: 01 00 add %eax,(%rax) 3: 00 e8 add %ch,%al 5: 2e 7f 1b jg,pn 0x23 8: 00 4d 85 add %cl,-0x7b(%rbp) b: ff 48 8b decl -0x75(%rax) e: 5c pop %rsp f: 24 38 and $0x38,%al 11: 75 07 jne 0x1a 13: e8 1f 7f 1b 00 call 0x1b7f37 18: eb 06 jmp 0x20 1a: e8 18 7f 1b 00 call 0x1b7f37 1f: fb sti 20: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15 27: fc ff df * 2a: 48 8b 44 24 58 mov 0x58(%rsp),%rax <-- trapping instruction 2f: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax 34: 84 c0 test %al,%al 36: 0f 85 2f 02 00 00 jne 0x26b 3c: 80 3b 01 cmpb $0x1,(%rbx) 3f: 0f .byte 0xf