BUG: sleeping function called from invalid context at kernel/workqueue.c:4561 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 25990, name: syz-executor preempt_count: 100, expected: 0 RCU nest depth: 1, expected: 0 locks held by syz-executor/25990: 5, last CPU#1: #0: ffff88804eeb4460 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:494 #1: ffff888068cacae8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1069 [inline] #1: ffff888068cacae8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: __start_dirop fs/namei.c:2918 [inline] #1: ffff888068cacae8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: start_dirop fs/namei.c:2942 [inline] #1: ffff888068cacae8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: filename_create+0x200/0x370 fs/namei.c:5092 #2: ffffffff8f4f2938 (tomoyo_ss){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:198 [inline] #2: ffffffff8f4f2938 (tomoyo_ss){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:305 [inline] #2: ffffffff8f4f2938 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_read_lock security/tomoyo/common.h:1112 [inline] #2: ffffffff8f4f2938 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_path_perm+0x251/0x560 security/tomoyo/file.c:826 #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1216 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0x8f/0x2550 arch/x86/kernel/unwind_orc.c:495 #4: ffffc90000a18cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745 Preemption disabled at: [] softirq_handle_begin kernel/softirq.c:486 [inline] [] handle_softirqs+0xab/0x860 kernel/softirq.c:621 CPU: 1 UID: 0 PID: 25990 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 __might_resched+0x36a/0x4c0 kernel/sched/core.c:9264 __cancel_work_sync+0x6d/0x110 kernel/workqueue.c:4561 mmc_free_host+0x19/0x40 drivers/mmc/core/host.c:700 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386 run_timer_base kernel/time/timer.c:2395 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405 handle_softirqs+0x226/0x860 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:rcu_read_lock include/linux/rcupdate.h:850 [inline] RIP: 0010:class_rcu_constructor include/linux/rcupdate.h:1216 [inline] RIP: 0010:unwind_next_frame+0xb7/0x2550 arch/x86/kernel/unwind_orc.c:495 Code: 00 00 48 c7 c7 a0 c8 d5 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 41 55 e8 c4 53 2b 00 48 83 c4 08 e8 5b f9 6e 0a 85 c0 <74> 3a e8 02 89 34 00 84 c0 75 31 e8 49 f9 6e 0a 85 c0 74 28 80 3d RSP: 0018:ffffc9000765f580 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff81000130 RCX: ffff888034263e80 RDX: 0000000038db7243 RSI: ffffffff8e69f504 RDI: ffffffff8c6dad80 RBP: 1ffff92000ecbecc R08: ffffffff8177f1df R09: 0000000000000000 R10: dffffc0000000000 R11: ffffffff81b2a310 R12: dffffc0000000000 R13: ffffffff8177f1df R14: ffffc9000765f628 R15: 1ffff92000ecbec5 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:264 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2748 [inline] slab_free mm/slub.c:6508 [inline] kfree+0x1c5/0x650 mm/slub.c:6801 tomoyo_realpath_from_path+0x605/0x640 security/tomoyo/realpath.c:286 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x283/0x560 security/tomoyo/file.c:827 tomoyo_path_symlink+0xab/0xf0 security/tomoyo/tomoyo.c:212 security_path_symlink+0x16f/0x360 security/security.c:1502 filename_symlinkat+0x134/0x410 fs/namei.c:5817 __do_sys_symlinkat fs/namei.c:5839 [inline] __se_sys_symlinkat+0x4e/0x2b0 fs/namei.c:5834 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7facdcd9d217 Code: 44 00 00 48 89 f2 31 c9 48 89 fe bf 9c ff ff ff e9 8e f5 ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 b8 0a 01 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:00007ffc5521b198 EFLAGS: 00000202 ORIG_RAX: 000000000000010a RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007facdcd9d217 RDX: 00007facdce3603a RSI: 00000000ffffff9c RDI: 00007ffc5521b230 RBP: 00007ffc5521b1dc R08: 0000000000000001 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000025 R13: 00000000000927c0 R14: 00000000000d078e R15: 00007ffc5521b230 ============================= WARNING: suspicious RCU usage syzkaller #0 Tainted: G W L ----------------------------- kernel/rcu/srcutree.c:1468 Illegal synchronize_srcu() in same-type SRCU (or in RCU) read-side critical section! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 locks held by syz-executor/25990: 5, last CPU#1: #0: ffff88804eeb4460 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:494 #1: ffff888068cacae8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1069 [inline] #1: ffff888068cacae8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: __start_dirop fs/namei.c:2918 [inline] #1: ffff888068cacae8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: start_dirop fs/namei.c:2942 [inline] #1: ffff888068cacae8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: filename_create+0x200/0x370 fs/namei.c:5092 #2: ffffffff8f4f2938 (tomoyo_ss){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:198 [inline] #2: ffffffff8f4f2938 (tomoyo_ss){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:305 [inline] #2: ffffffff8f4f2938 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_read_lock security/tomoyo/common.h:1112 [inline] #2: ffffffff8f4f2938 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_path_perm+0x251/0x560 security/tomoyo/file.c:826 #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1216 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0x8f/0x2550 arch/x86/kernel/unwind_orc.c:495 #4: ffffc90000a18cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745 stack backtrace: CPU: 1 UID: 0 PID: 25990 Comm: syz-executor Tainted: G W L syzkaller #0 PREEMPT(full) Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 lockdep_rcu_suspicious+0x140/0x1d0 kernel/locking/lockdep.c:6972 __synchronize_srcu+0x157/0x2f0 kernel/rcu/srcutree.c:1464 wakeup_source_remove drivers/base/power/wakeup.c:201 [inline] wakeup_source_unregister+0x129/0x3f0 drivers/base/power/wakeup.c:237 mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:69 device_release+0xc4/0x1f0 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+0x222/0x550 lib/kobject.c:737 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386 run_timer_base kernel/time/timer.c:2395 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405 handle_softirqs+0x226/0x860 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:rcu_read_lock include/linux/rcupdate.h:850 [inline] RIP: 0010:class_rcu_constructor include/linux/rcupdate.h:1216 [inline] RIP: 0010:unwind_next_frame+0xb7/0x2550 arch/x86/kernel/unwind_orc.c:495 Code: 00 00 48 c7 c7 a0 c8 d5 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 41 55 e8 c4 53 2b 00 48 83 c4 08 e8 5b f9 6e 0a 85 c0 <74> 3a e8 02 89 34 00 84 c0 75 31 e8 49 f9 6e 0a 85 c0 74 28 80 3d RSP: 0018:ffffc9000765f580 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff81000130 RCX: ffff888034263e80 RDX: 0000000038db7243 RSI: ffffffff8e69f504 RDI: ffffffff8c6dad80 RBP: 1ffff92000ecbecc R08: ffffffff8177f1df R09: 0000000000000000 R10: dffffc0000000000 R11: ffffffff81b2a310 R12: dffffc0000000000 R13: ffffffff8177f1df R14: ffffc9000765f628 R15: 1ffff92000ecbec5 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:264 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2748 [inline] slab_free mm/slub.c:6508 [inline] kfree+0x1c5/0x650 mm/slub.c:6801 tomoyo_realpath_from_path+0x605/0x640 security/tomoyo/realpath.c:286 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x283/0x560 security/tomoyo/file.c:827 tomoyo_path_symlink+0xab/0xf0 security/tomoyo/tomoyo.c:212 security_path_symlink+0x16f/0x360 security/security.c:1502 filename_symlinkat+0x134/0x410 fs/namei.c:5817 __do_sys_symlinkat fs/namei.c:5839 [inline] __se_sys_symlinkat+0x4e/0x2b0 fs/namei.c:5834 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7facdcd9d217 Code: 44 00 00 48 89 f2 31 c9 48 89 fe bf 9c ff ff ff e9 8e f5 ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 b8 0a 01 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:00007ffc5521b198 EFLAGS: 00000202 ORIG_RAX: 000000000000010a RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007facdcd9d217 RDX: 00007facdce3603a RSI: 00000000ffffff9c RDI: 00007ffc5521b230 RBP: 00007ffc5521b1dc R08: 0000000000000001 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000025 R13: 00000000000927c0 R14: 00000000000d078e R15: 00007ffc5521b230 BUG: sleeping function called from invalid context at kernel/rcu/srcutree.c:1472 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 25990, name: syz-executor preempt_count: 100, expected: 0 RCU nest depth: 1, expected: 0 locks held by syz-executor/25990: 5, last CPU#1: #0: ffff88804eeb4460 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:494 #1: ffff888068cacae8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1069 [inline] #1: ffff888068cacae8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: __start_dirop fs/namei.c:2918 [inline] #1: ffff888068cacae8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: start_dirop fs/namei.c:2942 [inline] #1: ffff888068cacae8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: filename_create+0x200/0x370 fs/namei.c:5092 #2: ffffffff8f4f2938 (tomoyo_ss){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:198 [inline] #2: ffffffff8f4f2938 (tomoyo_ss){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:305 [inline] #2: ffffffff8f4f2938 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_read_lock security/tomoyo/common.h:1112 [inline] #2: ffffffff8f4f2938 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_path_perm+0x251/0x560 security/tomoyo/file.c:826 #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1216 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0x8f/0x2550 arch/x86/kernel/unwind_orc.c:495 #4: ffffc90000a18cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745 Preemption disabled at: [] softirq_handle_begin kernel/softirq.c:486 [inline] [] handle_softirqs+0xab/0x860 kernel/softirq.c:621 CPU: 1 UID: 0 PID: 25990 Comm: syz-executor Tainted: G W L syzkaller #0 PREEMPT(full) Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 __might_resched+0x36a/0x4c0 kernel/sched/core.c:9264 __synchronize_srcu+0x1a1/0x2f0 kernel/rcu/srcutree.c:1472 wakeup_source_remove drivers/base/power/wakeup.c:201 [inline] wakeup_source_unregister+0x129/0x3f0 drivers/base/power/wakeup.c:237 mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:69 device_release+0xc4/0x1f0 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+0x222/0x550 lib/kobject.c:737 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386 run_timer_base kernel/time/timer.c:2395 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405 handle_softirqs+0x226/0x860 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:rcu_read_lock include/linux/rcupdate.h:850 [inline] RIP: 0010:class_rcu_constructor include/linux/rcupdate.h:1216 [inline] RIP: 0010:unwind_next_frame+0xb7/0x2550 arch/x86/kernel/unwind_orc.c:495 Code: 00 00 48 c7 c7 a0 c8 d5 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 41 55 e8 c4 53 2b 00 48 83 c4 08 e8 5b f9 6e 0a 85 c0 <74> 3a e8 02 89 34 00 84 c0 75 31 e8 49 f9 6e 0a 85 c0 74 28 80 3d RSP: 0018:ffffc9000765f580 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff81000130 RCX: ffff888034263e80 RDX: 0000000038db7243 RSI: ffffffff8e69f504 RDI: ffffffff8c6dad80 RBP: 1ffff92000ecbecc R08: ffffffff8177f1df R09: 0000000000000000 R10: dffffc0000000000 R11: ffffffff81b2a310 R12: dffffc0000000000 R13: ffffffff8177f1df R14: ffffc9000765f628 R15: 1ffff92000ecbec5 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:264 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2748 [inline] slab_free mm/slub.c:6508 [inline] kfree+0x1c5/0x650 mm/slub.c:6801 tomoyo_realpath_from_path+0x605/0x640 security/tomoyo/realpath.c:286 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x283/0x560 security/tomoyo/file.c:827 tomoyo_path_symlink+0xab/0xf0 security/tomoyo/tomoyo.c:212 security_path_symlink+0x16f/0x360 security/security.c:1502 filename_symlinkat+0x134/0x410 fs/namei.c:5817 __do_sys_symlinkat fs/namei.c:5839 [inline] __se_sys_symlinkat+0x4e/0x2b0 fs/namei.c:5834 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7facdcd9d217 Code: 44 00 00 48 89 f2 31 c9 48 89 fe bf 9c ff ff ff e9 8e f5 ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 b8 0a 01 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:00007ffc5521b198 EFLAGS: 00000202 ORIG_RAX: 000000000000010a RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007facdcd9d217 RDX: 00007facdce3603a RSI: 00000000ffffff9c RDI: 00007ffc5521b230 RBP: 00007ffc5521b1dc R08: 0000000000000001 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000025 R13: 00000000000927c0 R14: 00000000000d078e R15: 00007ffc5521b230 ODEBUG: object ffffc90000a18a80 is NOT on stack ffffc90007658000, but annotated. ------------[ cut here ]------------ 1 WARNING: lib/debugobjects.c:672 at debug_object_is_on_stack lib/debugobjects.c:672 [inline], CPU#1: syz-executor/25990 WARNING: lib/debugobjects.c:672 at lookup_object_or_alloc lib/debugobjects.c:705 [inline], CPU#1: syz-executor/25990 WARNING: lib/debugobjects.c:672 at __debug_object_init+0x2c4/0x3c0 lib/debugobjects.c:798, CPU#1: syz-executor/25990 Modules linked in: CPU: 1 UID: 0 PID: 25990 Comm: syz-executor Tainted: G W L syzkaller #0 PREEMPT(full) Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:debug_object_is_on_stack lib/debugobjects.c:672 [inline] RIP: 0010:lookup_object_or_alloc lib/debugobjects.c:705 [inline] RIP: 0010:__debug_object_init+0x2c4/0x3c0 lib/debugobjects.c:798 Code: 25 fc cc 41 ff c7 44 89 3d 89 3e e8 15 48 c7 c1 80 b6 6d 8c 48 c7 c7 e0 b6 6d 8c 84 c0 48 0f 45 f9 48 89 de e8 cd a0 3c fc 90 <0f> 0b 90 e9 c0 fe ff ff e8 4f 1c 00 00 8b 05 a1 a9 6d 0a 3b 05 9f RSP: 0018:ffffc90000a189b8 EFLAGS: 00010046 RAX: 0000000000000050 RBX: ffffc90000a18a80 RCX: 1336f8a09773c600 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: ffff888034263ea0 R08: 0000000000000100 R09: 0000000000000001 R10: dffffc0000000000 R11: fffff520001430b9 R12: ffff888079b53c58 R13: ffff88802737e8f8 R14: dffffc0000000000 R15: 0000000000000001 FS: 000055558ec3d500(0000) GS:ffff888124dc7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007facdcdaedc0 CR3: 00000000415fe000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __synchronize_srcu+0x1d5/0x2f0 kernel/rcu/srcutree.c:1475 wakeup_source_remove drivers/base/power/wakeup.c:201 [inline] wakeup_source_unregister+0x129/0x3f0 drivers/base/power/wakeup.c:237 mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:69 device_release+0xc4/0x1f0 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+0x222/0x550 lib/kobject.c:737 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386 run_timer_base kernel/time/timer.c:2395 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405 handle_softirqs+0x226/0x860 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:rcu_read_lock include/linux/rcupdate.h:850 [inline] RIP: 0010:class_rcu_constructor include/linux/rcupdate.h:1216 [inline] RIP: 0010:unwind_next_frame+0xb7/0x2550 arch/x86/kernel/unwind_orc.c:495 Code: 00 00 48 c7 c7 a0 c8 d5 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 41 55 e8 c4 53 2b 00 48 83 c4 08 e8 5b f9 6e 0a 85 c0 <74> 3a e8 02 89 34 00 84 c0 75 31 e8 49 f9 6e 0a 85 c0 74 28 80 3d RSP: 0018:ffffc9000765f580 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff81000130 RCX: ffff888034263e80 RDX: 0000000038db7243 RSI: ffffffff8e69f504 RDI: ffffffff8c6dad80 RBP: 1ffff92000ecbecc R08: ffffffff8177f1df R09: 0000000000000000 R10: dffffc0000000000 R11: ffffffff81b2a310 R12: dffffc0000000000 R13: ffffffff8177f1df R14: ffffc9000765f628 R15: 1ffff92000ecbec5 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:264 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2748 [inline] slab_free mm/slub.c:6508 [inline] kfree+0x1c5/0x650 mm/slub.c:6801 tomoyo_realpath_from_path+0x605/0x640 security/tomoyo/realpath.c:286 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x283/0x560 security/tomoyo/file.c:827 tomoyo_path_symlink+0xab/0xf0 security/tomoyo/tomoyo.c:212 security_path_symlink+0x16f/0x360 security/security.c:1502 filename_symlinkat+0x134/0x410 fs/namei.c:5817 __do_sys_symlinkat fs/namei.c:5839 [inline] __se_sys_symlinkat+0x4e/0x2b0 fs/namei.c:5834 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7facdcd9d217 Code: 44 00 00 48 89 f2 31 c9 48 89 fe bf 9c ff ff ff e9 8e f5 ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 b8 0a 01 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:00007ffc5521b198 EFLAGS: 00000202 ORIG_RAX: 000000000000010a RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007facdcd9d217 RDX: 00007facdce3603a RSI: 00000000ffffff9c RDI: 00007ffc5521b230 RBP: 00007ffc5521b1dc R08: 0000000000000001 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000025 R13: 00000000000927c0 R14: 00000000000d078e R15: 00007ffc5521b230 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 48 c7 c7 a0 c8 d5 8e mov $0xffffffff8ed5c8a0,%rdi 9: 31 f6 xor %esi,%esi b: 31 d2 xor %edx,%edx d: b9 02 00 00 00 mov $0x2,%ecx 12: 45 31 c0 xor %r8d,%r8d 15: 45 31 c9 xor %r9d,%r9d 18: 41 55 push %r13 1a: e8 c4 53 2b 00 call 0x2b53e3 1f: 48 83 c4 08 add $0x8,%rsp 23: e8 5b f9 6e 0a call 0xa6ef983 28: 85 c0 test %eax,%eax * 2a: 74 3a je 0x66 <-- trapping instruction 2c: e8 02 89 34 00 call 0x348933 31: 84 c0 test %al,%al 33: 75 31 jne 0x66 35: e8 49 f9 6e 0a call 0xa6ef983 3a: 85 c0 test %eax,%eax 3c: 74 28 je 0x66 3e: 80 .byte 0x80 3f: 3d .byte 0x3d