BUG: soft lockup in file

ID	Workflow	Correct	Bug	Created	Started	Finished	Revision	Error
f6c3aa53-6336-4d76-b6de-3c8fe4d41845	assessment-security	💥	BUG: soft lockup in file_free	2026/06/18 04:01	2026/06/18 04:01	2026/06/18 04:01	b62b3ded1759f79b37600c5ffe2b0a81b919b0b0	failed to run ["git" "-c" "core.hooksPath=/dev/null" "checkout" "596d152bc5e34b870b32ba3c6d6a766d563ebda0"]: exit status 128 error: Could not read 2b2442f6d5163d8201fa1626374270acadbc640c
18faed48-418b-410c-90d9-bef496b985f9	assessment-security	💥	BUG: soft lockup in file_free	2026/06/16 00:01	2026/06/16 00:01	2026/06/16 00:01	50bb0618cd2f9cd819534368fff82367c1681dab	failed to run ["git" "-c" "core.hooksPath=/dev/null" "fetch" "--force" "--tags" "433dfd5a8a5d80bbf0669b14e9ed908911a52dd6" "596d152bc5e34b870b32ba3c6d6a766d563ebda0"]: exit status 128 error: insuffici... truncated to first 200 bytes; open job for full error
6388b04e-8aa3-483e-9405-877bc8cf24d3	assessment-security	💥	BUG: soft lockup in file_free	2026/06/14 00:01	2026/06/14 00:01	2026/06/14 00:02	4f06757f683a802254a4c8edbfe67ff801904c5e	failed to run ["git" "-c" "core.hooksPath=/dev/null" "fetch" "--force" "--tags" "433dfd5a8a5d80bbf0669b14e9ed908911a52dd6" "596d152bc5e34b870b32ba3c6d6a766d563ebda0"]: exit status 128 error: insuffici... truncated to first 200 bytes; open job for full error

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: rcu detected stall in file_free (2) fs	1				1	120d	120d	0/29	auto-obsoleted due to no activity on 2026/05/19 15:58
upstream	INFO: rcu detected stall in file_free fs	1				5	607d	698d	0/29	auto-obsoleted due to no activity on 2025/01/18 07:51

Kernel

Title

Rank 🛈

upstream

INFO: rcu detected stall in file_free (2) fs

120d

0/29

auto-obsoleted due to no activity on 2026/05/19 15:58

upstream

INFO: rcu detected stall in file_free fs

607d

698d

0/29

auto-obsoleted due to no activity on 2025/01/18 07:51

watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor:10668] Modules linked in: irq event stamp: 169424 hardirqs last enabled at (169423): [<ffff8000867cdd20>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] hardirqs last enabled at (169423): [<ffff8000867cdd20>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198 hardirqs last disabled at (169424): [<ffff8000867a94b4>] __el1_irq arch/arm64/kernel/entry-common.c:506 [inline] hardirqs last disabled at (169424): [<ffff8000867a94b4>] el1_interrupt+0x28/0x60 arch/arm64/kernel/entry-common.c:522 softirqs last enabled at (169396): [<ffff80008030a098>] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (169396): [<ffff80008030a098>] handle_softirqs+0xbc4/0xd34 kernel/softirq.c:650 softirqs last disabled at (169391): [<ffff8000800204b0>] __do_softirq+0x14/0x20 kernel/softirq.c:656 CPU: 0 UID: 0 PID: 10668 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : lock_acquire+0x16c/0x368 arch/arm64/include/asm/irqflags.h:-1 lr : lockdep_recursion_finish kernel/locking/lockdep.c:470 [inline] lr : lock_acquire+0x14c/0x368 kernel/locking/lockdep.c:5870 sp : ffff8000933d7a10 x29: ffff8000933d7a60 x28: 0000000000000000 x27: 0000000000000000 x26: ffff800088920230 x25: 0000000000000000 x24: 0000000000000000 x23: 0000000000000002 x22: ffff800088b673e0 x21: ffff800080b6550c x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 00000000ffff8000 x13: 0000000000000001 x12: 0000000000000000 x11: ffff80008a3f4d08 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff800080b6550c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff0000d34c5700 x0 : 0000000000000000 Call trace: __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) lock_acquire+0x16c/0x368 kernel/locking/lockdep.c:5871 (P) rcu_lock_acquire include/linux/rcupdate.h:300 [inline] rcu_read_lock_sched include/linux/rcupdate.h:936 [inline] pfn_valid+0xac/0x214 include/linux/mmzone.h:2281 lowmem_page_address include/linux/mm.h:2973 [inline] folio_address include/linux/mm.h:2984 [inline] slab_address mm/slab.h:153 [inline] nearest_obj mm/slab.h:284 [inline] check_slab_allocation+0xac/0x17c mm/kasan/common.c:229 __kasan_slab_pre_free+0x34/0x44 mm/kasan/common.c:261 kasan_slab_pre_free include/linux/kasan.h:199 [inline] slab_free_hook mm/slub.c:2634 [inline] slab_free mm/slub.c:6251 [inline] kmem_cache_free+0x148/0x6b8 mm/slub.c:6378 file_free+0x128/0x1dc fs/file_table.c:104 __fput+0x538/0x744 fs/file_table.c:523 fput_close_sync+0x10c/0x278 fs/file_table.c:615 __do_sys_close fs/open.c:1507 [inline] __se_sys_close fs/open.c:1492 [inline] __arm64_sys_close+0x7c/0x10c fs/open.c:1492 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 1404 Comm: kworker/u8:6 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: events_unbound toggle_allocation_gate pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : csd_lock_wait kernel/smp.c:342 [inline] pc : smp_call_function_many_cond+0xfa4/0x1614 kernel/smp.c:892 lr : csd_lock_wait kernel/smp.c:342 [inline] lr : smp_call_function_many_cond+0xfbc/0x1614 kernel/smp.c:892 sp : ffff800095337780 x29: ffff800095337890 x28: dfff800000000000 x27: ffff0001a5ff5780 x26: 0000000000000011 x25: 0000000000000000 x24: ffff80008897f680 x23: ffffffffffffffff x22: 1fffe00034bfeaf0 x21: 1fffe00034bfeaf1 x20: ffff0001a5fd6b68 x19: ffff0001a5ff5788 x18: 1fffe00034bfbe20 x17: ffff80008897b000 x16: ffff800088a2dc20 x15: ffff0001a5fdf10c x14: ffff0001a5fdf108 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000011 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000805a47c4 x2 : 0000000000000000 x1 : ffff0000ca241d00 x0 : 0000000000000000 Call trace: __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:233 [inline] (P) __cmpwait arch/arm64/include/asm/cmpxchg.h:259 [inline] (P) csd_lock_wait kernel/smp.c:342 [inline] (P) smp_call_function_many_cond+0xfa4/0x1614 kernel/smp.c:892 (P) smp_call_function_many kernel/smp.c:915 [inline] smp_call_function+0x58/0xbc kernel/smp.c:935 kick_all_cpus_sync+0x28/0x34 kernel/smp.c:1081 arch_jump_label_transform_apply+0x14/0x20 arch/arm64/kernel/jump_label.c:34 __jump_label_update+0x314/0x33c kernel/jump_label.c:521 jump_label_update+0x41c/0x4a8 kernel/jump_label.c:910 static_key_enable_cpuslocked+0x11c/0x220 kernel/jump_label.c:210 static_key_enable+0x24/0x38 kernel/jump_label.c:223 toggle_allocation_gate+0xb8/0x28c mm/kfence/core.c:906 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x79c/0x1098 kernel/workqueue.c:3397 worker_thread+0x754/0xba0 kernel/workqueue.c:3478 kthread+0x2f8/0x3c8 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [kworker/u8:6:1404] Modules linked in: irq event stamp: 2752288 hardirqs last enabled at (2752287): [<ffff8000867ad4a4>] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline] hardirqs last enabled at (2752287): [<ffff8000867ad4a4>] arm64_exit_to_kernel_mode+0x80/0x94 arch/arm64/kernel/entry-common.c:62 hardirqs last disabled at (2752288): [<ffff8000867a94b4>] __el1_irq arch/arm64/kernel/entry-common.c:506 [inline] hardirqs last disabled at (2752288): [<ffff8000867a94b4>] el1_interrupt+0x28/0x60 arch/arm64/kernel/entry-common.c:522 softirqs last enabled at (2752280): [<ffff80008030a098>] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (2752280): [<ffff80008030a098>] handle_softirqs+0xbc4/0xd34 kernel/softirq.c:650 softirqs last disabled at (2752271): [<ffff8000800204b0>] __do_softirq+0x14/0x20 kernel/softirq.c:656 CPU: 1 UID: 0 PID: 1404 Comm: kworker/u8:6 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: events_unbound toggle_allocation_gate pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : csd_lock_wait kernel/smp.c:342 [inline] pc : smp_call_function_many_cond+0xfa4/0x1614 kernel/smp.c:892 lr : csd_lock_wait kernel/smp.c:342 [inline] lr : smp_call_function_many_cond+0xfbc/0x1614 kernel/smp.c:892 sp : ffff800095337780 x29: ffff800095337890 x28: dfff800000000000 x27: ffff0001a5ff5780 x26: 0000000000000011 x25: 0000000000000000 x24: ffff80008897f680 x23: ffffffffffffffff x22: 1fffe00034bfeaf0 x21: 1fffe00034bfeaf1 x20: ffff0001a5fd6b68 x19: ffff0001a5ff5788 x18: 1fffe00034bfbe20 x17: ffff80008897b000 x16: ffff800088a2dc20 x15: ffff0001a5fdf10c x14: ffff0001a5fdf108 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000011 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000805a47c4 x2 : 0000000000000000 x1 : ffff0000ca241d00 x0 : 0000000000000000 Call trace: __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:233 [inline] (P) __cmpwait arch/arm64/include/asm/cmpxchg.h:259 [inline] (P) csd_lock_wait kernel/smp.c:342 [inline] (P) smp_call_function_many_cond+0xfa4/0x1614 kernel/smp.c:892 (P) smp_call_function_many kernel/smp.c:915 [inline] smp_call_function+0x58/0xbc kernel/smp.c:935 kick_all_cpus_sync+0x28/0x34 kernel/smp.c:1081 arch_jump_label_transform_apply+0x14/0x20 arch/arm64/kernel/jump_label.c:34 __jump_label_update+0x314/0x33c kernel/jump_label.c:521 jump_label_update+0x41c/0x4a8 kernel/jump_label.c:910 static_key_enable_cpuslocked+0x11c/0x220 kernel/jump_label.c:210 static_key_enable+0x24/0x38 kernel/jump_label.c:223 toggle_allocation_gate+0xb8/0x28c mm/kfence/core.c:906 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x79c/0x1098 kernel/workqueue.c:3397 worker_thread+0x754/0xba0 kernel/workqueue.c:3478 kthread+0x2f8/0x3c8 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 10668 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : handle_softirqs+0x1d0/0xd34 kernel/softirq.c:610 lr : handle_softirqs+0x1cc/0xd34 kernel/softirq.c:606 sp : ffff80008e987ee0 x29: ffff80008e987f80 x28: ffff0000d34c5710 x27: 0000000000000386 x26: ffff0000d34c5708 x25: 1fffe0001a698ae1 x24: 0000000000000000 x23: ffff0000d34c5700 x22: dfff800000000000 x21: ffff0001a5fce480 x20: ffff80008891febc x19: ffff0001a5fce480 x18: 0000000000000000 x17: ffff80011d69a000 x16: ffff80008e980000 x15: 0000000000000000 x14: 0000000000000001 x13: 0000000000000001 x12: 0000000000000000 x11: ffff80008015517c x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000295d2 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff800080155224 x2 : 0000000000000000 x1 : ffff0000d34c5700 x0 : ffff80011d69a000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P) handle_softirqs+0x1d0/0xd34 kernel/softirq.c:606 (P) __do_softirq+0x14/0x20 kernel/softirq.c:656 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:889 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83 invoke_softirq kernel/softirq.c:503 [inline] __irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735 irq_exit_rcu+0x14/0x84 kernel/softirq.c:752 __el1_irq arch/arm64/kernel/entry-common.c:510 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:522 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:527 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:590 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) lock_acquire+0x16c/0x368 kernel/locking/lockdep.c:5871 (P) rcu_lock_acquire include/linux/rcupdate.h:300 [inline] rcu_read_lock_sched include/linux/rcupdate.h:936 [inline] pfn_valid+0xac/0x214 include/linux/mmzone.h:2281 lowmem_page_address include/linux/mm.h:2973 [inline] folio_address include/linux/mm.h:2984 [inline] slab_address mm/slab.h:153 [inline] nearest_obj mm/slab.h:284 [inline] check_slab_allocation+0xac/0x17c mm/kasan/common.c:229 __kasan_slab_pre_free+0x34/0x44 mm/kasan/common.c:261 kasan_slab_pre_free include/linux/kasan.h:199 [inline] slab_free_hook mm/slub.c:2634 [inline] slab_free mm/slub.c:6251 [inline] kmem_cache_free+0x148/0x6b8 mm/slub.c:6378 file_free+0x128/0x1dc fs/file_table.c:104 __fput+0x538/0x744 fs/file_table.c:523 fput_close_sync+0x10c/0x278 fs/file_table.c:615 __do_sys_close fs/open.c:1507 [inline] __se_sys_close fs/open.c:1492 [inline] __arm64_sys_close+0x7c/0x10c fs/open.c:1492 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2026/06/12 10:47	git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci	596d152bc5e3	e93da63e	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-gce-arm64	BUG: soft lockup in file_free

Crashes (1):

Assets (help?)