------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.120/6146 is trying to acquire lock:
ffffffff8eaf4160 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x61/0x80 kernel/printk/printk.c:1902
but task is already holding lock:
ffff88806a43b520 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:675 [inline]
ffff88806a43b520 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x88/0x140 kernel/sched/core.c:659
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #4 (&rq->__lock){-.-.}-{2:2}:
lock_acquire kernel/locking/lockdep.c:5868 [inline]
lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825
_raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:382
raw_spin_rq_lock_nested+0x2c/0x140 kernel/sched/core.c:667
raw_spin_rq_lock kernel/sched/sched.h:1653 [inline]
_task_rq_lock+0xcf/0x500 kernel/sched/core.c:762
cgroup_move_task+0x81/0x320 kernel/sched/psi.c:1176
css_set_move_task+0x285/0x600 kernel/cgroup/cgroup.c:925
cgroup_post_fork+0x1f9/0x9a0 kernel/cgroup/cgroup.c:7009
copy_process+0x6b7a/0x8030 kernel/fork.c:2550
kernel_clone+0x176/0x9d0 kernel/fork.c:2748
user_mode_thread+0xcc/0x110 kernel/fork.c:2824
rest_init+0x21/0x260 init/main.c:682
start_kernel+0x48e/0x490 init/main.c:1175
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x12b/0x130 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x158
-> #3 (&p->pi_lock){-.-.}-{2:2}:
lock_acquire kernel/locking/lockdep.c:5868 [inline]
lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:132 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:166
class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:571 [inline]
try_to_wake_up+0xbd/0x1c90 kernel/sched/core.c:4292
__wake_up_common+0x135/0x1f0 kernel/sched/wait.c:108
__wake_up_common_lock kernel/sched/wait.c:125 [inline]
__wake_up+0x31/0x60 kernel/sched/wait.c:146
tty_port_default_wakeup+0x47/0x60 drivers/tty/tty_port.c:67
serial8250_tx_chars+0x68f/0x860 drivers/tty/serial/8250/8250_port.c:1723
serial8250_handle_irq_locked+0x770/0x9a0 drivers/tty/serial/8250/8250_port.c:1837
serial8250_handle_irq.part.0+0xb4/0x530 drivers/tty/serial/8250/8250_port.c:1853
serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1849 [inline]
serial8250_default_handle_irq+0xc2/0x280 drivers/tty/serial/8250/8250_port.c:1867
serial8250_interrupt+0xf8/0x1b0 drivers/tty/serial/8250/8250_core.c:86
__handle_irq_event_percpu+0x232/0x880 kernel/irq/handle.c:209
handle_irq_event_percpu kernel/irq/handle.c:246 [inline]
handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:263
handle_edge_irq+0x34c/0x950 kernel/irq/chip.c:859
generic_handle_irq_desc include/linux/irqdesc.h:188 [inline]
handle_irq arch/x86/kernel/irq.c:209 [inline]
call_irq_handler arch/x86/kernel/irq.c:265 [inline]
__common_interrupt+0xd8/0x2f0 arch/x86/kernel/irq.c:280
common_interrupt+0xb9/0xe0 arch/x86/kernel/irq.c:273
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:665
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:63
arch_safe_halt arch/x86/include/asm/paravirt.h:62 [inline]
default_idle+0x9/0x10 arch/x86/kernel/process.c:768
default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x3a7/0x5b0 kernel/sched/idle.c:355
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:454
rest_init+0x251/0x260 init/main.c:717
start_kernel+0x48e/0x490 init/main.c:1175
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x12b/0x130 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x158
-> #2 (&tty->write_wait){-.-.}-{3:3}:
lock_acquire kernel/locking/lockdep.c:5868 [inline]
lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:132 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:166
__wake_up_common_lock kernel/sched/wait.c:124 [inline]
__wake_up+0x1c/0x60 kernel/sched/wait.c:146
tty_port_default_wakeup+0x47/0x60 drivers/tty/tty_port.c:67
serial8250_tx_chars+0x68f/0x860 drivers/tty/serial/8250/8250_port.c:1723
__start_tx+0x3e4/0x490 drivers/tty/serial/8250/8250_port.c:1430
serial8250_start_tx+0x368/0x540 drivers/tty/serial/8250/8250_port.c:1539
__uart_start+0x295/0x510 drivers/tty/serial/serial_core.c:161
uart_write+0x211/0xb20 drivers/tty/serial/serial_core.c:629
process_output_block drivers/tty/n_tty.c:557 [inline]
n_tty_write+0x431/0x1160 drivers/tty/n_tty.c:2366
iterate_tty_write drivers/tty/tty_io.c:1006 [inline]
file_tty_write.isra.0+0x4d2/0x890 drivers/tty/tty_io.c:1081
tty_write drivers/tty/tty_io.c:1102 [inline]
redirected_tty_write drivers/tty/tty_io.c:1125 [inline]
redirected_tty_write+0xd4/0x120 drivers/tty/tty_io.c:1105
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1050 fs/read_write.c:687
ksys_write+0x12a/0x250 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #1 (&port_lock_key){-.-.}-{3:3}:
lock_acquire kernel/locking/lockdep.c:5868 [inline]
lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:132 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:166
uart_port_lock_irqsave include/linux/serial_core.h:719 [inline]
serial8250_console_write+0x177/0x1a50 drivers/tty/serial/8250/8250_port.c:3344
console_emit_next_record kernel/printk/printk.c:3183 [inline]
console_flush_one_record+0x790/0xe50 kernel/printk/printk.c:3269
console_flush_all kernel/printk/printk.c:3343 [inline]
__console_flush_and_unlock kernel/printk/printk.c:3373 [inline]
console_unlock+0x103/0x260 kernel/printk/printk.c:3413
vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2479
_printk+0xcf/0x110 kernel/printk/printk.c:2504
register_console.cold+0xc0/0x248 kernel/printk/printk.c:4208
univ8250_console_init+0x6f/0x80 drivers/tty/serial/8250/8250_core.c:515
console_init+0x3d5/0x5b0 kernel/printk/printk.c:4407
start_kernel+0x314/0x490 init/main.c:1112
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x12b/0x130 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x158
-> #0 (console_owner){....}-{0:0}:
check_prev_add+0xeb/0xe60 kernel/locking/lockdep.c:3165
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x136c/0x1a40 kernel/locking/lockdep.c:5237
lock_acquire kernel/locking/lockdep.c:5868 [inline]
lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825
console_lock_spinning_enable+0x72/0x80 kernel/printk/printk.c:1902
console_emit_next_record kernel/printk/printk.c:3177 [inline]
console_flush_one_record+0x739/0xe50 kernel/printk/printk.c:3269
console_flush_all kernel/printk/printk.c:3343 [inline]
__console_flush_and_unlock kernel/printk/printk.c:3373 [inline]
console_unlock+0x103/0x260 kernel/printk/printk.c:3413
vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2479
_printk+0xcf/0x110 kernel/printk/printk.c:2504
__report_bug.cold+0x34/0x141 lib/bug.c:248
report_bug+0xb2/0x220 lib/bug.c:286
handle_bug+0x16a/0x2a0 arch/x86/kernel/traps.c:436
exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:490
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:593
lockdep_assert_rq_held kernel/sched/sched.h:1641 [inline]
lockdep_assert_rq_held kernel/sched/sched.h:1638 [inline]
update_rq_clock+0x40a/0xd20 kernel/sched/core.c:865
pick_next_task kernel/sched/core.c:6338 [inline]
__schedule+0x1e2d/0x6730 kernel/sched/core.c:7149
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x205/0xa00 kernel/entry/common.c:167
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:679
obj_cgroup_memcg+0x0/0xa0 include/linux/memcontrol.h:858
get_mem_cgroup_from_objcg+0x4d/0x1f0 include/linux/memcontrol.h:490
__memcg_slab_post_alloc_hook+0x279/0x1160 mm/memcontrol.c:3571
memcg_slab_post_alloc_hook mm/slub.c:2447 [inline]
slab_post_alloc_hook mm/slub.c:4603 [inline]
slab_alloc_node mm/slub.c:4917 [inline]
kmem_cache_alloc_lru_noprof+0x583/0x6a0 mm/slub.c:4950
alloc_inode+0x183/0x250 fs/inode.c:340
iget_locked+0x1d9/0x6d0 fs/inode.c:1477
kernfs_get_inode+0x46/0x470 fs/kernfs/inode.c:252
kernfs_fill_super fs/kernfs/mount.c:308 [inline]
kernfs_get_tree+0x63e/0xbb0 fs/kernfs/mount.c:392
vfs_get_tree+0x92/0x320 fs/super.c:1700
fc_mount fs/namespace.c:1198 [inline]
do_new_mount_fc fs/namespace.c:3765 [inline]
do_new_mount fs/namespace.c:3841 [inline]
path_mount+0x7d0/0x23d0 fs/namespace.c:4161
do_mount fs/namespace.c:4174 [inline]
__do_sys_mount fs/namespace.c:4390 [inline]
__se_sys_mount fs/namespace.c:4367 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:4367
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
other info that might help us debug this:
Chain exists of:
console_owner --> &p->pi_lock --> &rq->__lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&rq->__lock);
lock(&p->pi_lock);
lock(&rq->__lock);
lock(console_owner);
*** DEADLOCK ***
6 locks held by syz.0.120/6146:
#0: ffff8880372f40d8 (&type->s_umount_key#31/1){+.+.}-{4:4}, at: alloc_super fs/super.c:345 [inline]
#0: ffff8880372f40d8 (&type->s_umount_key#31/1){+.+.}-{4:4}, at: sget_fc+0x3c8/0x1d80 fs/super.c:766
#1: ffff88801d2a6180 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_fill_super fs/kernfs/mount.c:307 [inline]
#1: ffff88801d2a6180 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_get_tree+0x5f3/0xbb0 fs/kernfs/mount.c:392
#2: ffffffff8ebe8200 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#2: ffffffff8ebe8200 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#2: ffffffff8ebe8200 (rcu_read_lock){....}-{1:3}, at: get_mem_cgroup_from_objcg+0x1d/0x1f0 include/linux/memcontrol.h:488
#3: ffff88806a43b520 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:675 [inline]
#3: ffff88806a43b520 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x88/0x140 kernel/sched/core.c:659
#4: ffffffff8ebd45a0 (console_lock){+.+.}-{0:0}, at: _printk+0xcf/0x110 kernel/printk/printk.c:2504
#5: ffffffff8ebd4618 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:305 [inline]
#5: ffffffff8ebd4618 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:428 [inline]
#5: ffffffff8ebd4618 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:291 [inline]
#5: ffffffff8ebd4618 (console_srcu){....}-{0:0}, at: console_flush_one_record+0xfd/0xe50 kernel/printk/printk.c:3246
stack backtrace:
CPU: 0 UID: 0 PID: 6146 Comm: syz.0.120 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
print_circular_bug.cold+0x178/0x1c7 kernel/locking/lockdep.c:2043
check_noncircular+0x146/0x160 kernel/locking/lockdep.c:2175
check_prev_add+0xeb/0xe60 kernel/locking/lockdep.c:3165
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x136c/0x1a40 kernel/locking/lockdep.c:5237
lock_acquire kernel/locking/lockdep.c:5868 [inline]
lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825
console_lock_spinning_enable+0x72/0x80 kernel/printk/printk.c:1902
console_emit_next_record kernel/printk/printk.c:3177 [inline]
console_flush_one_record+0x739/0xe50 kernel/printk/printk.c:3269
console_flush_all kernel/printk/printk.c:3343 [inline]
__console_flush_and_unlock kernel/printk/printk.c:3373 [inline]
console_unlock+0x103/0x260 kernel/printk/printk.c:3413
vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2479
_printk+0xcf/0x110 kernel/printk/printk.c:2504
__report_bug.cold+0x34/0x141 lib/bug.c:248
report_bug+0xb2/0x220 lib/bug.c:286
handle_bug+0x16a/0x2a0 arch/x86/kernel/traps.c:436
exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:490
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:593
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1641 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1638 [inline]
RIP: 0010:update_rq_clock+0x40a/0xd20 kernel/sched/core.c:865
Code: ab c8 0b 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc a8 04 0f 84 df fc ff ff 90 0f 0b 90 e9 d6 fc ff ff 90 <0f> 0b 90 e9 92 fc ff ff 4c 8d 83 c0 0b 00 00 48 b8 00 00 00 00 00
RSP: 0018:ffffc900028b7720 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff88806a53b4c0 RCX: 0000000000000001
RDX: 0000000000000046 RSI: ffffffff8e1823aa RDI: ffffffff8c402680
RBP: ffffc900028b78c8 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff912286d7 R11: 0000000000000000 R12: ffffffff9122baa4
R13: ffff88806a53c3a0 R14: ffff88801eaeca80 R15: ffff88806a43c058
pick_next_task kernel/sched/core.c:6338 [inline]
__schedule+0x1e2d/0x6730 kernel/sched/core.c:7149
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x205/0xa00 kernel/entry/common.c:167
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:679
RIP: 0010:obj_cgroup_memcg+0x0/0xa0 include/linux/memcontrol.h:377
Code: 89 ee e8 93 f0 ff ff 5b 48 89 ef 5d 41 5c e9 27 d7 cf ff e8 82 b2 f7 ff eb cd 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> c7 c0 a4 ba 22 91 53 48 89 fb 48 ba 00 00 00 00 00 fc ff df 48
RSP: 0018:ffffc900028b79e0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffff8880372f4838 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8c402600 RDI: ffff88803537c800
RBP: ffff88803537c800 R08: 0000000076e77e79 R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffc900028b7ad8 R14: 0000000000000cc0 R15: 0000000000000000
get_mem_cgroup_from_objcg+0x4d/0x1f0 include/linux/memcontrol.h:490
__memcg_slab_post_alloc_hook+0x279/0x1160 mm/memcontrol.c:3571
memcg_slab_post_alloc_hook mm/slub.c:2447 [inline]
slab_post_alloc_hook mm/slub.c:4603 [inline]
slab_alloc_node mm/slub.c:4917 [inline]
kmem_cache_alloc_lru_noprof+0x583/0x6a0 mm/slub.c:4950
alloc_inode+0x183/0x250 fs/inode.c:340
iget_locked+0x1d9/0x6d0 fs/inode.c:1477
kernfs_get_inode+0x46/0x470 fs/kernfs/inode.c:252
kernfs_fill_super fs/kernfs/mount.c:308 [inline]
kernfs_get_tree+0x63e/0xbb0 fs/kernfs/mount.c:392
vfs_get_tree+0x92/0x320 fs/super.c:1700
fc_mount fs/namespace.c:1198 [inline]
do_new_mount_fc fs/namespace.c:3765 [inline]
do_new_mount fs/namespace.c:3841 [inline]
path_mount+0x7d0/0x23d0 fs/namespace.c:4161
do_mount fs/namespace.c:4174 [inline]
__do_sys_mount fs/namespace.c:4390 [inline]
__se_sys_mount fs/namespace.c:4367 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:4367
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f439519e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd6df23078 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4395425fa0 RCX: 00007f439519e0d9
RDX: 0000200000000040 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 00007f4395235024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4395425fac R14: 00007f4395425fa0 R15: 00007f4395425fa0
debug_locks && !(lock_is_held(&(__rq_lockp(rq))->dep_map) != 0)
WARNING: kernel/sched/sched.h:1641 at lockdep_assert_rq_held kernel/sched/sched.h:1641 [inline], CPU#0: syz.0.120/6146
WARNING: kernel/sched/sched.h:1641 at lockdep_assert_rq_held kernel/sched/sched.h:1638 [inline], CPU#0: syz.0.120/6146
WARNING: kernel/sched/sched.h:1641 at update_rq_clock+0x40a/0xd20 kernel/sched/core.c:865, CPU#0: syz.0.120/6146
Modules linked in:
CPU: 0 UID: 0 PID: 6146 Comm: syz.0.120 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1641 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1638 [inline]
RIP: 0010:update_rq_clock+0x40a/0xd20 kernel/sched/core.c:865
Code: ab c8 0b 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc a8 04 0f 84 df fc ff ff 90 0f 0b 90 e9 d6 fc ff ff 90 <0f> 0b 90 e9 92 fc ff ff 4c 8d 83 c0 0b 00 00 48 b8 00 00 00 00 00
RSP: 0018:ffffc900028b7720 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff88806a53b4c0 RCX: 0000000000000001
RDX: 0000000000000046 RSI: ffffffff8e1823aa RDI: ffffffff8c402680
RBP: ffffc900028b78c8 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff912286d7 R11: 0000000000000000 R12: ffffffff9122baa4
R13: ffff88806a53c3a0 R14: ffff88801eaeca80 R15: ffff88806a43c058
FS: 0000555580ace500(0000) GS:ffff8880d5dd8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000000 CR3: 000000002c672000 CR4: 0000000000352ef0
Call Trace:
pick_next_task kernel/sched/core.c:6338 [inline]
__schedule+0x1e2d/0x6730 kernel/sched/core.c:7149
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x205/0xa00 kernel/entry/common.c:167
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:679
RIP: 0010:obj_cgroup_memcg+0x0/0xa0 include/linux/memcontrol.h:377
Code: 89 ee e8 93 f0 ff ff 5b 48 89 ef 5d 41 5c e9 27 d7 cf ff e8 82 b2 f7 ff eb cd 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> c7 c0 a4 ba 22 91 53 48 89 fb 48 ba 00 00 00 00 00 fc ff df 48
RSP: 0018:ffffc900028b79e0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffff8880372f4838 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8c402600 RDI: ffff88803537c800
RBP: ffff88803537c800 R08: 0000000076e77e79 R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffc900028b7ad8 R14: 0000000000000cc0 R15: 0000000000000000
get_mem_cgroup_from_objcg+0x4d/0x1f0 include/linux/memcontrol.h:490
__memcg_slab_post_alloc_hook+0x279/0x1160 mm/memcontrol.c:3571
memcg_slab_post_alloc_hook mm/slub.c:2447 [inline]
slab_post_alloc_hook mm/slub.c:4603 [inline]
slab_alloc_node mm/slub.c:4917 [inline]
kmem_cache_alloc_lru_noprof+0x583/0x6a0 mm/slub.c:4950
alloc_inode+0x183/0x250 fs/inode.c:340
iget_locked+0x1d9/0x6d0 fs/inode.c:1477
kernfs_get_inode+0x46/0x470 fs/kernfs/inode.c:252
kernfs_fill_super fs/kernfs/mount.c:308 [inline]
kernfs_get_tree+0x63e/0xbb0 fs/kernfs/mount.c:392
vfs_get_tree+0x92/0x320 fs/super.c:1700
fc_mount fs/namespace.c:1198 [inline]
do_new_mount_fc fs/namespace.c:3765 [inline]
do_new_mount fs/namespace.c:3841 [inline]
path_mount+0x7d0/0x23d0 fs/namespace.c:4161
do_mount fs/namespace.c:4174 [inline]
__do_sys_mount fs/namespace.c:4390 [inline]
__se_sys_mount fs/namespace.c:4367 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:4367
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f439519e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd6df23078 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4395425fa0 RCX: 00007f439519e0d9
RDX: 0000200000000040 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 00007f4395235024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4395425fac R14: 00007f4395425fa0 R15: 00007f4395425fa0
----------------
Code disassembly (best guess):
0: 89 ee mov %ebp,%esi
2: e8 93 f0 ff ff call 0xfffff09a
7: 5b pop %rbx
8: 48 89 ef mov %rbp,%rdi
b: 5d pop %rbp
c: 41 5c pop %r12
e: e9 27 d7 cf ff jmp 0xffcfd73a
13: e8 82 b2 f7 ff call 0xfff7b29a
18: eb cd jmp 0xffffffe7
1a: 90 nop
1b: 90 nop
1c: 90 nop
1d: 90 nop
1e: 90 nop
1f: 90 nop
20: 90 nop
21: 90 nop
22: 90 nop
23: 90 nop
24: 90 nop
25: 90 nop
26: 90 nop
27: 90 nop
28: 90 nop
29: 90 nop
* 2a: 48 c7 c0 a4 ba 22 91 mov $0xffffffff9122baa4,%rax <-- trapping instruction
31: 53 push %rbx
32: 48 89 fb mov %rdi,%rbx
35: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
3c: fc ff df
3f: 48 rex.W