=============================
[ BUG: Invalid wait context ]
6.13.0-rc3-syzkaller-00301-gbcde95ce32b6 #0 Not tainted
-----------------------------
swapper/1/0 is trying to lock:
ffff8880b863e8d8 (&fb_info->lock){+.+.}-{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/1/0:
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1161 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: sched_core_balance+0xce/0xf50 kernel/sched/core.c:6401
stack backtrace:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.13.0-rc3-syzkaller-00301-gbcde95ce32b6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__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:4826 [inline]
check_wait_context kernel/locking/lockdep.c:4898 [inline]
__lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5176
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
_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:1523 [inline]
raw_spin_rq_lock_irq kernel/sched/sched.h:1529 [inline]
sched_core_balance+0xd87/0xf50 kernel/sched/core.c:6411
do_balance_callbacks kernel/sched/core.c:5021 [inline]
__balance_callbacks+0x18a/0x280 kernel/sched/core.c:5075
__schedule+0x1a01/0x4c30 kernel/sched/core.c:6759
schedule_idle+0x56/0x90 kernel/sched/core.c:6874
do_idle+0x567/0x5c0 kernel/sched/idle.c:353
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
start_secondary+0x102/0x110 arch/x86/kernel/smpboot.c:314
common_startup_64+0x13e/0x147
BUG: unable to handle page fault for address: fffffbfff378171b
#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: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.13.0-rc3-syzkaller-00301-gbcde95ce32b6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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:ffffc900001a7700 EFLAGS: 00010086
RAX: 0000000000f2ce01 RBX: 1ffffffff378171b RCX: ffffffff817ac1c4
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9bc0b8d8
RBP: ffffffffffffffff R08: ffffffff9bc0b8df R09: 1ffffffff378171b
R10: dffffc0000000000 R11: fffffbfff378171b R12: ffff88801d2c0ac4
R13: ffff88801d2c0000 R14: dffffc0000000001 R15: fffffbfff378171c
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff378171b CR3: 0000000031efa000 CR4: 0000000000350ef0
Call Trace:
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:5196
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
_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:1523 [inline]
raw_spin_rq_lock_irq kernel/sched/sched.h:1529 [inline]
sched_core_balance+0xd87/0xf50 kernel/sched/core.c:6411
do_balance_callbacks kernel/sched/core.c:5021 [inline]
__balance_callbacks+0x18a/0x280 kernel/sched/core.c:5075
__schedule+0x1a01/0x4c30 kernel/sched/core.c:6759
schedule_idle+0x56/0x90 kernel/sched/core.c:6874
do_idle+0x567/0x5c0 kernel/sched/idle.c:353
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
start_secondary+0x102/0x110 arch/x86/kernel/smpboot.c:314
common_startup_64+0x13e/0x147
Modules linked in:
CR2: fffffbfff378171b
---[ 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:ffffc900001a7700 EFLAGS: 00010086
RAX: 0000000000f2ce01 RBX: 1ffffffff378171b RCX: ffffffff817ac1c4
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9bc0b8d8
RBP: ffffffffffffffff R08: ffffffff9bc0b8df R09: 1ffffffff378171b
R10: dffffc0000000000 R11: fffffbfff378171b R12: ffff88801d2c0ac4
R13: ffff88801d2c0000 R14: dffffc0000000001 R15: fffffbfff378171c
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff378171b CR3: 0000000031efa000 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)