=============================
[ BUG: Invalid wait context ]
6.12.0-rc5-next-20241101-syzkaller #0 Not tainted
-----------------------------
syz.1.1168/11599 is trying to lock:
ffffffff8ea73c58
(stack_list_lock
){-.-.}-{3:3}
, at: add_stack_record_to_list mm/page_owner.c:182 [inline]
, at: inc_stack_record_count mm/page_owner.c:214 [inline]
, at: __set_page_owner+0x5cb/0x800 mm/page_owner.c:329
other info that might help us debug this:
context-{2:2}
2 locks held by syz.1.1168/11599:
#0: ffffffff8f165928
(tty_mutex
){+.+.}-{4:4}
, at: tty_open_by_driver drivers/tty/tty_io.c:2046 [inline]
, at: tty_open+0x232/0xde0 drivers/tty/tty_io.c:2129
#1: ffff88805ed6e1c0
(&tty->legacy_mutex
){+.+.}-{4:4}
, at: tty_init_dev+0x78/0x4c0 drivers/tty/tty_io.c:1415
stack backtrace:
CPU: 1 UID: 0 PID: 11599 Comm: syz.1.1168 Not tainted 6.12.0-rc5-next-20241101-syzkaller #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_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
add_stack_record_to_list mm/page_owner.c:182 [inline]
inc_stack_record_count mm/page_owner.c:214 [inline]
__set_page_owner+0x5cb/0x800 mm/page_owner.c:329
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1541
prep_new_page mm/page_alloc.c:1549 [inline]
get_page_from_freelist+0x3725/0x3870 mm/page_alloc.c:3495
__alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4771
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
stack_depot_save_flags+0x666/0x830 lib/stackdepot.c:627
kasan_save_stack+0x4f/0x60 mm/kasan/common.c:48
__kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:544
task_work_add+0xd9/0x490 kernel/task_work.c:77
__run_posix_cpu_timers kernel/time/posix-cpu-timers.c:1219 [inline]
run_posix_cpu_timers+0x6ac/0x810 kernel/time/posix-cpu-timers.c:1418
tick_sched_handle kernel/time/tick-sched.c:276 [inline]
tick_nohz_handler+0x37c/0x500 kernel/time/tick-sched.c:297
__run_hrtimer kernel/time/hrtimer.c:1691 [inline]
__hrtimer_run_queues+0x551/0xd50 kernel/time/hrtimer.c:1755
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x996/0xeb0
Code: 48 21 c3 0f 85 16 02 00 00 e8 c6 b9 20 00 4c 8b 7c 24 10 4d 85 f6 75 07 e8 b7 b9 20 00 eb 06 e8 b0 b9 20 00 fb 48 8b 5c 24 18 <48> 8b 44 24 30 42 80 3c 28 00 74 08 48 89 df e8 d6 fd 8a 00 4c 8b
RSP: 0018:ffffc90004517240 EFLAGS: 00000287
RAX: ffffffff81750450 RBX: ffffffff8f17c378 RCX: 0000000000040000
RDX: ffffc9000488a000 RSI: 000000000000282a RDI: 000000000000282b
RBP: ffffc900045173f0 R08: ffffffff81750427 R09: 1ffffffff285a30d
R10: dffffc0000000000 R11: fffffbfff285a30e R12: ffffffff8f17c320
R13: dffffc0000000000 R14: 0000000000000200 R15: ffffc90004517440
__console_flush_and_unlock kernel/printk/printk.c:3257 [inline]
console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3297
con_install+0x18a/0x7f0 drivers/tty/vt/vt.c:3547
tty_driver_install_tty drivers/tty/tty_io.c:1304 [inline]
tty_init_dev+0xc1/0x4c0 drivers/tty/tty_io.c:1416
tty_open_by_driver drivers/tty/tty_io.c:2082 [inline]
tty_open+0x9d9/0xde0 drivers/tty/tty_io.c:2129
chrdev_open+0x521/0x600 fs/char_dev.c:414
do_dentry_open+0xbe1/0x1b70 fs/open.c:962
vfs_open+0x3e/0x330 fs/open.c:1092
do_open fs/namei.c:3774 [inline]
path_openat+0x2c84/0x3590 fs/namei.c:3933
do_filp_open+0x235/0x490 fs/namei.c:3960
do_sys_openat2+0x13e/0x1d0 fs/open.c:1419
do_sys_open fs/open.c:1434 [inline]
__do_sys_openat fs/open.c:1450 [inline]
__se_sys_openat fs/open.c:1445 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1445
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1f3517d0b0
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 19 8f 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 6c 8f 02 00 8b 44
RSP: 002b:00007f1f35ff1b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f1f3517d0b0
RDX: 0000000000000002 RSI: 00007f1f35ff1c10 RDI: 00000000ffffff9c
RBP: 00007f1f35ff1c10 R08: 0000000000000000 R09: 00007f1f35ff1986
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1f35335f80 R15: 00007ffc4848d268
----------------
Code disassembly (best guess):
0: 48 21 c3 and %rax,%rbx
3: 0f 85 16 02 00 00 jne 0x21f
9: e8 c6 b9 20 00 call 0x20b9d4
e: 4c 8b 7c 24 10 mov 0x10(%rsp),%r15
13: 4d 85 f6 test %r14,%r14
16: 75 07 jne 0x1f
18: e8 b7 b9 20 00 call 0x20b9d4
1d: eb 06 jmp 0x25
1f: e8 b0 b9 20 00 call 0x20b9d4
24: fb sti
25: 48 8b 5c 24 18 mov 0x18(%rsp),%rbx
* 2a: 48 8b 44 24 30 mov 0x30(%rsp),%rax <-- trapping instruction
2f: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
34: 74 08 je 0x3e
36: 48 89 df mov %rbx,%rdi
39: e8 d6 fd 8a 00 call 0x8afe14
3e: 4c rex.WR
3f: 8b .byte 0x8b