------------[ cut here ]------------
WARNING: CPU: 1 PID: 5398 at kernel/sched/fair.c:5337 place_entity+0x463/0x520 kernel/sched/fair.c:5337
Modules linked in:
CPU: 1 UID: 0 PID: 5398 Comm: syz.0.9 Not tainted 6.11.0-rc4-next-20240821-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:place_entity+0x463/0x520 kernel/sched/fair.c:5337
Code: 27 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 48 8b 3c 24 4c 89 fe e8 77 14 00 00 48 89 04 24 e9 e0 fd ff ff 90 <0f> 0b 90 41 bd 01 00 00 00 e9 22 ff ff ff 89 d9 80 e1 07 38 c1 0f
RSP: 0018:ffffc90000a184c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000100000
RDX: 0000000000000400 RSI: ffff888020399e80 RDI: ffff888020399f00
RBP: dffffc0000000000 R08: ffffffff81358241 R09: 1ffffffff2038190
R10: dffffc0000000000 R11: fffffbfff2038191 R12: 00000000051806f1
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888020399e80
FS: 00007f92cf4b46c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3281eff8 CR3: 000000007bb84000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
enqueue_entity+0x271/0x1920 kernel/sched/fair.c:5409
enqueue_task_fair+0x206/0xe30 kernel/sched/fair.c:6985
enqueue_task+0x1a5/0x300 kernel/sched/core.c:2014
activate_task+0x61/0xc0 kernel/sched/core.c:2056
attach_task+0xee/0x190 kernel/sched/fair.c:9549
attach_tasks kernel/sched/fair.c:9584 [inline]
sched_balance_rq+0x65b1/0x8590 kernel/sched/fair.c:11661
sched_balance_domains+0x565/0xa90 kernel/sched/fair.c:12069
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5766
Code: 2b 00 74 08 4c 89 f7 e8 8a 30 8c 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900042b7260 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000856e58 RCX: c9bf2c9faff84500
RDX: dffffc0000000000 RSI: ffffffff8c0adfc0 RDI: ffffffff8c609da0
RBP: ffffc900042b73c0 R08: ffffffff937ab817 R09: 1ffffffff26f5702
R10: dffffc0000000000 R11: fffffbfff26f5703 R12: 1ffff92000856e54
R13: dffffc0000000000 R14: ffffc900042b72c0 R15: 0000000000000246
fs_reclaim_acquire+0xaf/0x140 mm/page_alloc.c:3870
might_alloc include/linux/sched/mm.h:334 [inline]
slab_pre_alloc_hook mm/slub.c:3987 [inline]
slab_alloc_node mm/slub.c:4065 [inline]
__kmalloc_cache_noprof+0x3d/0x2c0 mm/slub.c:4232
kmalloc_noprof include/linux/slab.h:681 [inline]
kzalloc_noprof include/linux/slab.h:817 [inline]
vc_allocate+0x1cf/0x710 drivers/tty/vt/vt.c:1065
con_install+0xa0/0x7f0 drivers/tty/vt/vt.c:3518
tty_driver_install_tty drivers/tty/tty_io.c:1307 [inline]
tty_init_dev+0xc1/0x4c0 drivers/tty/tty_io.c:1419
tty_open_by_driver drivers/tty/tty_io.c:2085 [inline]
tty_open+0x9e5/0xdf0 drivers/tty/tty_io.c:2132
chrdev_open+0x523/0x600 fs/char_dev.c:414
do_dentry_open+0x928/0x13f0 fs/open.c:959
vfs_open+0x3e/0x330 fs/open.c:1089
do_open fs/namei.c:3774 [inline]
path_openat+0x2c87/0x3590 fs/namei.c:3933
do_filp_open+0x235/0x490 fs/namei.c:3960
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_openat fs/open.c:1447 [inline]
__se_sys_openat fs/open.c:1442 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1442
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: 0033:0x7f92ce778810
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:00007f92cf4b3b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f92ce778810
RDX: 0000000000000002 RSI: 00007f92cf4b3c10 RDI: 00000000ffffff9c
RBP: 00007f92cf4b3c10 R08: 0000000000000000 R09: 00007f92cf4b3986
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f92ce915f80 R15: 00007ffe269c9138
----------------
Code disassembly (best guess):
0: 2b 00 sub (%rax),%eax
2: 74 08 je 0xc
4: 4c 89 f7 mov %r14,%rdi
7: e8 8a 30 8c 00 call 0x8c3096
c: f6 44 24 61 02 testb $0x2,0x61(%rsp)
11: 0f 85 85 01 00 00 jne 0x19c
17: 41 f7 c7 00 02 00 00 test $0x200,%r15d
1e: 74 01 je 0x21
20: fb sti
21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp)
28: e0 45
* 2a: 4b c7 44 25 00 00 00 movq $0x0,0x0(%r13,%r12,1) <-- trapping instruction
31: 00 00
33: 43 c7 44 25 09 00 00 movl $0x0,0x9(%r13,%r12,1)
3a: 00 00
3c: 43 rex.XB
3d: c7 .byte 0xc7
3e: 44 rex.R
3f: 25 .byte 0x25