=============================
[ BUG: Invalid wait context ]
6.14.0-rc1-syzkaller-00235-g9946eaf552b1 #0 Not tainted
-----------------------------
swapper/0/0 is trying to lock:
ffff8880b863e958 (&newdev->mutex){+.+.}-{4:4}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:606
other info that might help us debug this:
context-{5:5}
1 lock held by swapper/0/0:
 #0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1161 [inline]
 #0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: sched_core_balance+0xce/0xf50 kernel/sched/core.c:6409
stack backtrace:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.14.0-rc1-syzkaller-00235-g9946eaf552b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4828 [inline]
 check_wait_context kernel/locking/lockdep.c:4900 [inline]
 __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5178
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:606
 raw_spin_rq_lock kernel/sched/sched.h:1521 [inline]
 raw_spin_rq_lock_irq kernel/sched/sched.h:1527 [inline]
 sched_core_balance+0xd87/0xf50 kernel/sched/core.c:6419
 do_balance_callbacks kernel/sched/core.c:5029 [inline]
 __balance_callbacks+0x18a/0x280 kernel/sched/core.c:5083
 finish_lock_switch kernel/sched/core.c:5130 [inline]
 finish_task_switch+0x1d3/0x870 kernel/sched/core.c:5249
 context_switch kernel/sched/core.c:5380 [inline]
 __schedule+0x1916/0x4c90 kernel/sched/core.c:6764
 schedule_idle+0x56/0x90 kernel/sched/core.c:6882
 do_idle+0x567/0x5c0 kernel/sched/idle.c:353
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
 rest_init+0x2dc/0x300 init/main.c:743
 start_kernel+0x484/0x510 init/main.c:1099
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:515
 x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:496
 common_startup_64+0x13e/0x147
 </TASK>
BUG: unable to handle page fault for address: fffffbfff37ddfb0
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 0 
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.14.0-rc1-syzkaller-00235-g9946eaf552b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189
Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00
RSP: 0018:ffffffff8e607660 EFLAGS: 00010086
RAX: 0000000000f7ec01 RBX: 1ffffffff37ddfb0 RCX: ffffffff819acc64
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9beefd80
RBP: ffffffffffffffff R08: ffffffff9beefd87 R09: 1ffffffff37ddfb0
R10: dffffc0000000000 R11: fffffbfff37ddfb0 R12: ffffffff8e697054
R13: ffffffff8e696580 R14: dffffc0000000001 R15: fffffbfff37ddfb1
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff37ddfb0 CR3: 000000005df24000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 __lock_acquire+0xc94/0x2100 kernel/locking/lockdep.c:5198
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:606
 raw_spin_rq_lock kernel/sched/sched.h:1521 [inline]
 raw_spin_rq_lock_irq kernel/sched/sched.h:1527 [inline]
 sched_core_balance+0xd87/0xf50 kernel/sched/core.c:6419
 do_balance_callbacks kernel/sched/core.c:5029 [inline]
 __balance_callbacks+0x18a/0x280 kernel/sched/core.c:5083
 finish_lock_switch kernel/sched/core.c:5130 [inline]
 finish_task_switch+0x1d3/0x870 kernel/sched/core.c:5249
 context_switch kernel/sched/core.c:5380 [inline]
 __schedule+0x1916/0x4c90 kernel/sched/core.c:6764
 schedule_idle+0x56/0x90 kernel/sched/core.c:6882
 do_idle+0x567/0x5c0 kernel/sched/idle.c:353
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
 rest_init+0x2dc/0x300 init/main.c:743
 start_kernel+0x484/0x510 init/main.c:1099
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:515
 x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:496
 common_startup_64+0x13e/0x147
 </TASK>
Modules linked in:
CR2: fffffbfff37ddfb0
---[ end trace 0000000000000000 ]---
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189
Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00
RSP: 0018:ffffffff8e607660 EFLAGS: 00010086
RAX: 0000000000f7ec01 RBX: 1ffffffff37ddfb0 RCX: ffffffff819acc64
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9beefd80
RBP: ffffffffffffffff R08: ffffffff9beefd87 R09: 1ffffffff37ddfb0
R10: dffffc0000000000 R11: fffffbfff37ddfb0 R12: ffffffff8e697054
R13: ffffffff8e696580 R14: dffffc0000000001 R15: fffffbfff37ddfb1
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff37ddfb0 CR3: 000000005df24000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 7 bytes skipped:
   0:	df 4f 8d             	fisttps -0x73(%rdi)
   3:	3c 31                	cmp    $0x31,%al
   5:	4c 89 fd             	mov    %r15,%rbp
   8:	4c 29 dd             	sub    %r11,%rbp
   b:	48 83 fd 10          	cmp    $0x10,%rbp
   f:	7f 29                	jg     0x3a
  11:	48 85 ed             	test   %rbp,%rbp
  14:	0f 84 3e 01 00 00    	je     0x158
  1a:	4c 89 cd             	mov    %r9,%rbp
  1d:	48 f7 d5             	not    %rbp
  20:	48 01 dd             	add    %rbx,%rbp
* 23:	41 80 3b 00          	cmpb   $0x0,(%r11) <-- trapping instruction
  27:	0f 85 c9 01 00 00    	jne    0x1f6
  2d:	49 ff c3             	inc    %r11
  30:	48 ff c5             	inc    %rbp
  33:	75 ee                	jne    0x23
  35:	e9                   	.byte 0xe9
  36:	1e                   	(bad)
  37:	01 00                	add    %eax,(%rax)