WARNING: suspicious RCU usage in mmc_free_host

Status: upstream: reported on 2026/08/22 06:04
Subsystems: mmc
Labels: prio:high
[Documentation on labels]
Reported-by: syzbot+0d22039ef0915696ad4b@syzkaller.appspotmail.com
First crash: 59d, last: 1d20h
▶ ▼ ✨ AI Jobs (2)
ID Workflow Result Correct Bug Created Started Finished Revision
83bd6d9c repro-c Reproduced: ✅ ❓ WARNING: suspicious RCU usage in mmc_free_host 2026/10/02 07:44 2026/10/02 07:44 2026/10/02 08:47 6d32eb1f
45d40a75 assessment-security DenialOfService: ✅ Exploitable: ✅ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ✅ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ WARNING: suspicious RCU usage in mmc_free_host 2026/08/20 00:32 2026/08/20 00:32 2026/08/20 01:21 1e72964b
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly mmc report (Oct 2026) 0 (1) 2026/10/04 04:33
[syzbot] [mmc?] WARNING: suspicious RCU usage in mmc_free_host 1 (2) 2026/08/24 08:31
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.6 WARNING: suspicious RCU usage in mmc_free_host 4 9 11h07m 51d 0/2 upstream: reported on 2026/08/26 09:11
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2026/10/03 02:02 19m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git ce1e0223d8ad4211275c82a17ed6d43ab81e13d9 no crash job log log

Sample crash report:
=============================
WARNING: suspicious RCU usage
syzkaller #0 Not tainted
-----------------------------
kernel/sched/core.c:9226 Illegal context switch in RCU-sched read-side critical section!

other info that might help us debug this:


rcu_scheduler_active = 2, debug_locks = 1
locks held by syz.0.21/5944: 5, last CPU#0:
 #0: ffff88802d437180 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:600 [inline]
 #0: ffff88802d437180 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x1a4/0x9f0 mm/mmap.c:1299
 #1: ffffffff8fd5c8e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffffff8fd5c8e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffffff8fd5c8e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
 #2: ffff888059319a38 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #2: ffff888059319a38 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:404
 #3: ffffffff8fd5c9a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff8fd5c9a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 #3: ffffffff8fd5c9a0 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xba/0x490 include/linux/mmzone.h:2276
 #4: ffffc90000007cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745

stack backtrace:
CPU: 0 UID: 0 PID: 5944 Comm: syz.0.21 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2026
Call Trace:
 <IRQ>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 lockdep_rcu_suspicious+0x140/0x1d0 kernel/locking/lockdep.c:6972
 __might_resched+0xbb/0x4c0 kernel/sched/core.c:9226
 __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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:debug_lockdep_rcu_enabled+0xd/0x40 kernel/rcu/update.c:320
Code: 8e 67 48 0f b9 3a 90 eb bc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 83 3d 0b b9 91 05 00 <74> 1d 83 3d da e8 91 05 00 74 14 65 48 8b 0d 58 54 ad 08 31 c0 83
RSP: 0018:ffffc90004fcf310 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffffff8244eaaa RCX: 8000000000000002
RDX: 000000003f01dba9 RSI: ffffffff8e6f1b7c RDI: ffffffff8c6ddb80
RBP: ffffc90004fcf690 R08: ffffffff8244eaaa R09: 0000000000000000
R10: dffffc0000000000 R11: fffff9400031f2a1 R12: dffffc0000000000
R13: 00007fad119fd000 R14: 0000000000063e54 R15: ffff88813fe07180
 rcu_read_lock_sched include/linux/rcupdate.h:948 [inline]
 pfn_valid+0xdf/0x490 include/linux/mmzone.h:2276
 page_table_check_clear+0x21/0x500 mm/page_table_check.c:70
 ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:879 [inline]
 zap_present_folio_ptes mm/memory.c:1779 [inline]
 zap_present_ptes mm/memory.c:1861 [inline]
 do_zap_pte_range mm/memory.c:1963 [inline]
 zap_pte_range mm/memory.c:2065 [inline]
 zap_pmd_range mm/memory.c:2151 [inline]
 zap_pud_range mm/memory.c:2179 [inline]
 zap_p4d_range mm/memory.c:2200 [inline]
 __zap_vma_range+0x3a12/0x4f80 mm/memory.c:2240
 unmap_vmas+0x390/0x550 mm/memory.c:2309
 exit_mmap+0x293/0x9f0 mm/mmap.c:1315
 __mmput+0x118/0x420 kernel/fork.c:1193
 exit_mm+0x18e/0x240 kernel/exit.c:592
 do_exit+0x6cd/0x2360 kernel/exit.c:974
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1129
 get_signal+0x121b/0x12c0 kernel/signal.c:3112
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fad11f9e559
Code: Unable to access opcode bytes at 0x7fad11f9e52f.
RSP: 002b:00007fad12d9f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fad12225fa8 RCX: 00007fad11f9e559
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fad12225fa8
RBP: 00007fad12225fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fad12226038 R14: 00007fff650bfc10 R15: 00007fff650bfcf8
 </TASK>
BUG: sleeping function called from invalid context at kernel/workqueue.c:4561
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5944, name: syz.0.21
preempt_count: 102, expected: 0
RCU nest depth: 1, expected: 0
locks held by syz.0.21/5944: 5, last CPU#0:
 #0: ffff88802d437180 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:600 [inline]
 #0: ffff88802d437180 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x1a4/0x9f0 mm/mmap.c:1299
 #1: ffffffff8fd5c8e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffffff8fd5c8e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffffff8fd5c8e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
 #2: ffff888059319a38 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #2: ffff888059319a38 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:404
 #3: ffffffff8fd5c9a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff8fd5c9a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 #3: ffffffff8fd5c9a0 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xba/0x490 include/linux/mmzone.h:2276
 #4: ffffc90000007cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 UID: 0 PID: 5944 Comm: syz.0.21 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2026
Call Trace:
 <IRQ>
 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:debug_lockdep_rcu_enabled+0xd/0x40 kernel/rcu/update.c:320
Code: 8e 67 48 0f b9 3a 90 eb bc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 83 3d 0b b9 91 05 00 <74> 1d 83 3d da e8 91 05 00 74 14 65 48 8b 0d 58 54 ad 08 31 c0 83
RSP: 0018:ffffc90004fcf310 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffffff8244eaaa RCX: 8000000000000002
RDX: 000000003f01dba9 RSI: ffffffff8e6f1b7c RDI: ffffffff8c6ddb80
RBP: ffffc90004fcf690 R08: ffffffff8244eaaa R09: 0000000000000000
R10: dffffc0000000000 R11: fffff9400031f2a1 R12: dffffc0000000000
R13: 00007fad119fd000 R14: 0000000000063e54 R15: ffff88813fe07180
 rcu_read_lock_sched include/linux/rcupdate.h:948 [inline]
 pfn_valid+0xdf/0x490 include/linux/mmzone.h:2276
 page_table_check_clear+0x21/0x500 mm/page_table_check.c:70
 ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:879 [inline]
 zap_present_folio_ptes mm/memory.c:1779 [inline]
 zap_present_ptes mm/memory.c:1861 [inline]
 do_zap_pte_range mm/memory.c:1963 [inline]
 zap_pte_range mm/memory.c:2065 [inline]
 zap_pmd_range mm/memory.c:2151 [inline]
 zap_pud_range mm/memory.c:2179 [inline]
 zap_p4d_range mm/memory.c:2200 [inline]
 __zap_vma_range+0x3a12/0x4f80 mm/memory.c:2240
 unmap_vmas+0x390/0x550 mm/memory.c:2309
 exit_mmap+0x293/0x9f0 mm/mmap.c:1315
 __mmput+0x118/0x420 kernel/fork.c:1193
 exit_mm+0x18e/0x240 kernel/exit.c:592
 do_exit+0x6cd/0x2360 kernel/exit.c:974
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1129
 get_signal+0x121b/0x12c0 kernel/signal.c:3112
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fad11f9e559
Code: Unable to access opcode bytes at 0x7fad11f9e52f.
RSP: 002b:00007fad12d9f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fad12225fa8 RCX: 00007fad11f9e559
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fad12225fa8
RBP: 00007fad12225fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fad12226038 R14: 00007fff650bfc10 R15: 00007fff650bfcf8
 </TASK>

=============================
WARNING: suspicious RCU usage
syzkaller #0 Tainted: G        W          
-----------------------------
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.0.21/5944: 5, last CPU#0:
 #0: ffff88802d437180 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:600 [inline]
 #0: ffff88802d437180 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x1a4/0x9f0 mm/mmap.c:1299
 #1: ffffffff8fd5c8e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffffff8fd5c8e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffffff8fd5c8e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
 #2: ffff888059319a38 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #2: ffff888059319a38 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:404
 #3: ffffffff8fd5c9a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff8fd5c9a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 #3: ffffffff8fd5c9a0 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xba/0x490 include/linux/mmzone.h:2276
 #4: ffffc90000007cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745

stack backtrace:
CPU: 0 UID: 0 PID: 5944 Comm: syz.0.21 Tainted: G        W           syzkaller #0 PREEMPT(full) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2026
Call Trace:
 <IRQ>
 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:debug_lockdep_rcu_enabled+0xd/0x40 kernel/rcu/update.c:320
Code: 8e 67 48 0f b9 3a 90 eb bc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 83 3d 0b b9 91 05 00 <74> 1d 83 3d da e8 91 05 00 74 14 65 48 8b 0d 58 54 ad 08 31 c0 83
RSP: 0018:ffffc90004fcf310 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffffff8244eaaa RCX: 8000000000000002
RDX: 000000003f01dba9 RSI: ffffffff8e6f1b7c RDI: ffffffff8c6ddb80
RBP: ffffc90004fcf690 R08: ffffffff8244eaaa R09: 0000000000000000
R10: dffffc0000000000 R11: fffff9400031f2a1 R12: dffffc0000000000
R13: 00007fad119fd000 R14: 0000000000063e54 R15: ffff88813fe07180
 rcu_read_lock_sched include/linux/rcupdate.h:948 [inline]
 pfn_valid+0xdf/0x490 include/linux/mmzone.h:2276
 page_table_check_clear+0x21/0x500 mm/page_table_check.c:70
 ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:879 [inline]
 zap_present_folio_ptes mm/memory.c:1779 [inline]
 zap_present_ptes mm/memory.c:1861 [inline]
 do_zap_pte_range mm/memory.c:1963 [inline]
 zap_pte_range mm/memory.c:2065 [inline]
 zap_pmd_range mm/memory.c:2151 [inline]
 zap_pud_range mm/memory.c:2179 [inline]
 zap_p4d_range mm/memory.c:2200 [inline]
 __zap_vma_range+0x3a12/0x4f80 mm/memory.c:2240
 unmap_vmas+0x390/0x550 mm/memory.c:2309
 exit_mmap+0x293/0x9f0 mm/mmap.c:1315
 __mmput+0x118/0x420 kernel/fork.c:1193
 exit_mm+0x18e/0x240 kernel/exit.c:592
 do_exit+0x6cd/0x2360 kernel/exit.c:974
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1129
 get_signal+0x121b/0x12c0 kernel/signal.c:3112
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fad11f9e559
Code: Unable to access opcode bytes at 0x7fad11f9e52f.
RSP: 002b:00007fad12d9f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fad12225fa8 RCX: 00007fad11f9e559
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fad12225fa8
RBP: 00007fad12225fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fad12226038 R14: 00007fff650bfc10 R15: 00007fff650bfcf8
 </TASK>
BUG: sleeping function called from invalid context at kernel/rcu/srcutree.c:1472
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5944, name: syz.0.21
preempt_count: 102, expected: 0
RCU nest depth: 1, expected: 0
locks held by syz.0.21/5944: 5, last CPU#0:
 #0: ffff88802d437180 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:600 [inline]
 #0: ffff88802d437180 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x1a4/0x9f0 mm/mmap.c:1299
 #1: ffffffff8fd5c8e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffffff8fd5c8e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffffff8fd5c8e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
 #2: ffff888059319a38 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #2: ffff888059319a38 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:404
 #3: ffffffff8fd5c9a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff8fd5c9a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 #3: ffffffff8fd5c9a0 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xba/0x490 include/linux/mmzone.h:2276
 #4: ffffc90000007cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 UID: 0 PID: 5944 Comm: syz.0.21 Tainted: G        W           syzkaller #0 PREEMPT(full) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2026
Call Trace:
 <IRQ>
 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:debug_lockdep_rcu_enabled+0xd/0x40 kernel/rcu/update.c:320
Code: 8e 67 48 0f b9 3a 90 eb bc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 83 3d 0b b9 91 05 00 <74> 1d 83 3d da e8 91 05 00 74 14 65 48 8b 0d 58 54 ad 08 31 c0 83
RSP: 0018:ffffc90004fcf310 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffffff8244eaaa RCX: 8000000000000002
RDX: 000000003f01dba9 RSI: ffffffff8e6f1b7c RDI: ffffffff8c6ddb80
RBP: ffffc90004fcf690 R08: ffffffff8244eaaa R09: 0000000000000000
R10: dffffc0000000000 R11: fffff9400031f2a1 R12: dffffc0000000000
R13: 00007fad119fd000 R14: 0000000000063e54 R15: ffff88813fe07180
 rcu_read_lock_sched include/linux/rcupdate.h:948 [inline]
 pfn_valid+0xdf/0x490 include/linux/mmzone.h:2276
 page_table_check_clear+0x21/0x500 mm/page_table_check.c:70
 ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:879 [inline]
 zap_present_folio_ptes mm/memory.c:1779 [inline]
 zap_present_ptes mm/memory.c:1861 [inline]
 do_zap_pte_range mm/memory.c:1963 [inline]
 zap_pte_range mm/memory.c:2065 [inline]
 zap_pmd_range mm/memory.c:2151 [inline]
 zap_pud_range mm/memory.c:2179 [inline]
 zap_p4d_range mm/memory.c:2200 [inline]
 __zap_vma_range+0x3a12/0x4f80 mm/memory.c:2240
 unmap_vmas+0x390/0x550 mm/memory.c:2309
 exit_mmap+0x293/0x9f0 mm/mmap.c:1315
 __mmput+0x118/0x420 kernel/fork.c:1193
 exit_mm+0x18e/0x240 kernel/exit.c:592
 do_exit+0x6cd/0x2360 kernel/exit.c:974
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1129
 get_signal+0x121b/0x12c0 kernel/signal.c:3112
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fad11f9e559
Code: Unable to access opcode bytes at 0x7fad11f9e52f.
RSP: 002b:00007fad12d9f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fad12225fa8 RCX: 00007fad11f9e559
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fad12225fa8
RBP: 00007fad12225fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fad12226038 R14: 00007fff650bfc10 R15: 00007fff650bfcf8
 </TASK>
ODEBUG: object ffffc90000007a80 is NOT on stack ffffc90004fc8000, but annotated.
------------[ cut here ]------------
1
WARNING: lib/debugobjects.c:672 at debug_object_is_on_stack lib/debugobjects.c:672 [inline], CPU#0: syz.0.21/5944
WARNING: lib/debugobjects.c:672 at lookup_object_or_alloc lib/debugobjects.c:705 [inline], CPU#0: syz.0.21/5944
WARNING: lib/debugobjects.c:672 at __debug_object_init+0x2c4/0x3c0 lib/debugobjects.c:798, CPU#0: syz.0.21/5944
Modules linked in:
CPU: 0 UID: 0 PID: 5944 Comm: syz.0.21 Tainted: G        W           syzkaller #0 PREEMPT(full) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2026
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: 23 fc cc 41 ff c7 44 89 3d 09 88 e7 16 48 c7 c1 80 e4 6d 8c 48 c7 c7 e0 e4 6d 8c 84 c0 48 0f 45 f9 48 89 de e8 cd 70 3b fc 90 <0f> 0b 90 e9 c0 fe ff ff e8 4f 1c 00 00 8b 05 61 85 6c 0b 3b 05 5f
RSP: 0018:ffffc900000079b8 EFLAGS: 00010046
RAX: 0000000000000050 RBX: ffffc90000007a80 RCX: f88912d901b29000
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: ffff8880330b3ea0 R08: 0000000000000100 R09: 1ffffffff20d24b0
R10: dffffc0000000000 R11: fffffbfff20d24b1 R12: ffff88802a6d7408
R13: ffff88802ae19700 R14: dffffc0000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff888123abf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6e76dc25b8 CR3: 00000000590e6000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 __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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:debug_lockdep_rcu_enabled+0xd/0x40 kernel/rcu/update.c:320
Code: 8e 67 48 0f b9 3a 90 eb bc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 83 3d 0b b9 91 05 00 <74> 1d 83 3d da e8 91 05 00 74 14 65 48 8b 0d 58 54 ad 08 31 c0 83
RSP: 0018:ffffc90004fcf310 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffffff8244eaaa RCX: 8000000000000002
RDX: 000000003f01dba9 RSI: ffffffff8e6f1b7c RDI: ffffffff8c6ddb80
RBP: ffffc90004fcf690 R08: ffffffff8244eaaa R09: 0000000000000000
R10: dffffc0000000000 R11: fffff9400031f2a1 R12: dffffc0000000000
R13: 00007fad119fd000 R14: 0000000000063e54 R15: ffff88813fe07180
 rcu_read_lock_sched include/linux/rcupdate.h:948 [inline]
 pfn_valid+0xdf/0x490 include/linux/mmzone.h:2276
 page_table_check_clear+0x21/0x500 mm/page_table_check.c:70
 ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:879 [inline]
 zap_present_folio_ptes mm/memory.c:1779 [inline]
 zap_present_ptes mm/memory.c:1861 [inline]
 do_zap_pte_range mm/memory.c:1963 [inline]
 zap_pte_range mm/memory.c:2065 [inline]
 zap_pmd_range mm/memory.c:2151 [inline]
 zap_pud_range mm/memory.c:2179 [inline]
 zap_p4d_range mm/memory.c:2200 [inline]
 __zap_vma_range+0x3a12/0x4f80 mm/memory.c:2240
 unmap_vmas+0x390/0x550 mm/memory.c:2309
 exit_mmap+0x293/0x9f0 mm/mmap.c:1315
 __mmput+0x118/0x420 kernel/fork.c:1193
 exit_mm+0x18e/0x240 kernel/exit.c:592
 do_exit+0x6cd/0x2360 kernel/exit.c:974
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1129
 get_signal+0x121b/0x12c0 kernel/signal.c:3112
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fad11f9e559
Code: Unable to access opcode bytes at 0x7fad11f9e52f.
RSP: 002b:00007fad12d9f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fad12225fa8 RCX: 00007fad11f9e559
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fad12225fa8
RBP: 00007fad12225fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fad12226038 R14: 00007fff650bfc10 R15: 00007fff650bfcf8
 </TASK>
----------------
Code disassembly (best guess):
   0:	8e 67 48             	mov    0x48(%rdi),%fs
   3:	0f b9 3a             	ud1    (%rdx),%edi
   6:	90                   	nop
   7:	eb bc                	jmp    0xffffffc5
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	f3 0f 1e fa          	endbr64
  21:	31 c0                	xor    %eax,%eax
  23:	83 3d 0b b9 91 05 00 	cmpl   $0x0,0x591b90b(%rip)        # 0x591b935
* 2a:	74 1d                	je     0x49 <-- trapping instruction
  2c:	83 3d da e8 91 05 00 	cmpl   $0x0,0x591e8da(%rip)        # 0x591e90d
  33:	74 14                	je     0x49
  35:	65 48 8b 0d 58 54 ad 	mov    %gs:0x8ad5458(%rip),%rcx        # 0x8ad5495
  3c:	08
  3d:	31 c0                	xor    %eax,%eax
  3f:	83                   	.byte 0x83

Crashes (153):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/15 05:21 upstream 4056b3c9d3c9 8fb0ae89 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: suspicious RCU usage in mmc_free_host
2026/10/14 15:04 upstream 4056b3c9d3c9 7321cd29 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/13 17:21 upstream 24a19b953e2a 7321cd29 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/12 01:58 upstream b88c841d1164 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/10 23:15 upstream 3857c2fe5449 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/10 14:37 upstream 3857c2fe5449 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/09 14:30 upstream af32da41b032 a8add9cd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/08 11:33 upstream 7b63ef2d55f2 4f6a9fcf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/08 05:39 upstream 7b63ef2d55f2 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/08 04:03 upstream 7b63ef2d55f2 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/08 02:08 upstream 602042bf29f6 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/06 20:38 upstream 69f80fef3153 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/06 08:52 upstream 2c3418fffa9d f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/06 06:38 upstream 2c3418fffa9d f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/06 02:25 upstream 67f0943b394d f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/06 00:59 upstream 67f0943b394d 1995e6c7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/05 22:55 upstream 67f0943b394d 1995e6c7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/05 01:03 upstream 6addb4f38557 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/04 16:09 upstream 6addb4f38557 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: suspicious RCU usage in mmc_free_host
2026/10/04 10:43 upstream a74306e2e676 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/04 07:20 upstream a74306e2e676 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/04 05:15 upstream a74306e2e676 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: suspicious RCU usage in mmc_free_host
2026/10/04 02:53 upstream a74306e2e676 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: suspicious RCU usage in mmc_free_host
2026/10/04 00:43 upstream a74306e2e676 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/03 12:13 upstream e767a4ea70a3 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/03 11:10 upstream e767a4ea70a3 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/02 10:56 upstream d24e8ac715de 6d32eb1f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/02 00:02 upstream d24e8ac715de 6d32eb1f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/01 13:33 upstream 551c722f4080 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/01 07:41 upstream 551c722f4080 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: suspicious RCU usage in mmc_free_host
2026/09/28 20:20 upstream 72d3fcf802c4 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/09/28 18:23 upstream 72d3fcf802c4 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/09/28 04:32 upstream efb44d93a620 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/09/27 19:16 upstream efb44d93a620 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/09/25 20:29 upstream aa98230e410f f281d9d2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/09/24 17:07 upstream 62f4c998b297 3c3cdf19 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/09/23 18:28 upstream fe2ec83746e5 abce1216 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/09/23 09:08 upstream fe2ec83746e5 abce1216 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/09/22 21:44 upstream c4e9f74da438 3e2106e5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: suspicious RCU usage in mmc_free_host
2026/08/21 12:11 upstream 818bebeb63dd 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/08/19 18:45 upstream e8bf40d15402 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/08/18 05:56 upstream ff68e5f557f6 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/10/07 17:45 upstream 602042bf29f6 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING: suspicious RCU usage in mmc_free_host
2026/10/01 19:28 upstream d24e8ac715de 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING: suspicious RCU usage in mmc_free_host
2026/10/01 06:28 upstream 551c722f4080 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING: suspicious RCU usage in mmc_free_host
2026/09/30 16:43 upstream 551c722f4080 892a21ec .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING: suspicious RCU usage in mmc_free_host
2026/09/30 11:19 upstream 551c722f4080 7808aef4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING: suspicious RCU usage in mmc_free_host
2026/09/29 12:30 upstream 72d3fcf802c4 7bf4ea23 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING: suspicious RCU usage in mmc_free_host
2026/09/25 07:05 upstream ee9c669f9bf5 f281d9d2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING: suspicious RCU usage in mmc_free_host
2026/09/24 11:55 upstream 62f4c998b297 3c3cdf19 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING: suspicious RCU usage in mmc_free_host
2026/09/23 21:15 upstream fe2ec83746e5 0a1606bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING: suspicious RCU usage in mmc_free_host
2026/09/03 17:55 linux-next 32b6ef9a5d0e 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING: suspicious RCU usage in mmc_free_host
2026/08/20 14:28 linux-next 6a746cd265ae 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING: suspicious RCU usage in mmc_free_host
* Struck through repros no longer work on HEAD.