INFO: task syz.1.549:7048 blocked for more than 143 seconds.
Not tainted 6.10.0-syzkaller-12084-g28bbe4ea686a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.549 state:D stack:24960 pid:7048 tgid:7046 ppid:6465 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__ww_mutex_lock+0xec2/0x2790 kernel/locking/mutex.c:759
ww_mutex_lock+0x40/0x1f0 kernel/locking/mutex.c:876
drm_modeset_lock+0x6f/0x90 drivers/gpu/drm/drm_modeset_lock.c:398
drm_mode_getplane+0xf0/0x7a0 drivers/gpu/drm/drm_plane.c:840
drm_ioctl_kernel+0x33a/0x440 drivers/gpu/drm/drm_ioctl.c:745
drm_ioctl+0x611/0xad0 drivers/gpu/drm/drm_ioctl.c:842
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
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: 0033:0x7f32fe575f19
RSP: 002b:00007f32ff39d048 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f32fe705f60 RCX: 00007f32fe575f19
RDX: 00000000200001c0 RSI: 00000000c02064b6 RDI: 0000000000000008
RBP: 00007f32fe5e4e68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f32fe705f60 R15: 00007ffebfcef838
INFO: task syz.1.549:7051 blocked for more than 144 seconds.
Not tainted 6.10.0-syzkaller-12084-g28bbe4ea686a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.549 state:D stack:26096 pid:7051 tgid:7046 ppid:6465 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__ww_mutex_lock+0xec2/0x2790 kernel/locking/mutex.c:759
ww_mutex_lock+0x40/0x1f0 kernel/locking/mutex.c:876
modeset_lock+0x2bf/0x650 drivers/gpu/drm/drm_modeset_lock.c:314
drm_modeset_lock drivers/gpu/drm/drm_modeset_lock.c:396 [inline]
drm_modeset_lock_all_ctx+0x12e/0x350 drivers/gpu/drm/drm_modeset_lock.c:462
drm_mode_obj_get_properties_ioctl+0x22d/0x610 drivers/gpu/drm/drm_mode_object.c:446
drm_ioctl_kernel+0x33a/0x440 drivers/gpu/drm/drm_ioctl.c:745
drm_ioctl+0x611/0xad0 drivers/gpu/drm/drm_ioctl.c:842
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
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: 0033:0x7f32fe575f19
RSP: 002b:00007f32ff37c048 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f32fe706038 RCX: 00007f32fe575f19
RDX: 00000000200002c0 RSI: 00000000c02064b9 RDI: 0000000000000009
RBP: 00007f32fe5e4e68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f32fe706038 R15: 00007ffebfcef838
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e337660 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e337660 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e337660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6620
3 locks held by kworker/u8:6/1047:
2 locks held by getty/4852:
#0: ffff88802a73b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
3 locks held by syz.3.433/6665:
1 lock held by syz.1.549/7048:
#0: ffff88801fffc0b0 (crtc_ww_class_mutex){+.+.}-{3:3}, at: drm_modeset_lock+0x6f/0x90 drivers/gpu/drm/drm_modeset_lock.c:398
2 locks held by syz.1.549/7051:
#0: ffffc9001809fb30 (crtc_ww_class_acquire){+.+.}-{0:0}, at: drm_mode_obj_get_properties_ioctl+0x1d3/0x610 drivers/gpu/drm/drm_mode_object.c:446
#1: ffff88801fb8c518 (crtc_ww_class_mutex){+.+.}-{3:3}, at: modeset_lock+0x2bf/0x650 drivers/gpu/drm/drm_modeset_lock.c:314
1 lock held by syz.2.625/7319:
#0: ffff88801fffc0b0 (crtc_ww_class_mutex){+.+.}-{3:3}, at: drm_modeset_lock+0x6f/0x90 drivers/gpu/drm/drm_modeset_lock.c:398
1 lock held by syz.4.683/7538:
#0: ffff88801fffc0b0 (crtc_ww_class_mutex){+.+.}-{3:3}, at: drm_modeset_lock+0x6f/0x90 drivers/gpu/drm/drm_modeset_lock.c:398
2 locks held by kworker/u8:11/7891:
#0: ffff8880b943e9d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560
#1: ffff8880b9428948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:989
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-syzkaller-12084-g28bbe4ea686a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6665 Comm: syz.3.433 Not tainted 6.10.0-syzkaller-12084-g28bbe4ea686a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:__lock_acquire+0xed6/0x2040 kernel/locking/lockdep.c:5137
Code: cb 01 d6 29 da 89 dd c1 c5 13 31 d5 01 f3 29 ee 01 eb c1 c5 04 31 f5 48 c1 e5 20 48 c7 c0 c0 aa ae 8f 48 c1 e8 03 0f b6 04 38 <84> c0 0f 85 62 0c 00 00 48 09 dd 83 3d 28 ea 3e 0e 00 0f 85 77 04
RSP: 0018:ffffc90015036b30 EFLAGS: 00000802
RAX: 0000000000000000 RBX: 000000008bf7bef8 RCX: 00000000fca651a6
RDX: 00000000b6114683 RSI: 00000000b8b19b16 RDI: dffffc0000000000
RBP: b39d036500000000 R08: ffffffff92fcd8ff R09: 1ffffffff25f9b1f
R10: dffffc0000000000 R11: fffffbfff25f9b20 R12: 0000000000000000
R13: ffff88807af7e4d8 R14: 00000000c498ece5 R15: ffff88807af7e578
FS: 00007f10819cb6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e7d3919a0 CR3: 0000000022a5e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
consume_stock mm/memcontrol.c:1741 [inline]
try_charge_memcg+0x277/0x1010 mm/memcontrol.c:2171
try_charge mm/memcontrol-v1.h:20 [inline]
charge_memcg+0xa2/0x160 mm/memcontrol.c:4421
__mem_cgroup_charge+0x27/0x80 mm/memcontrol.c:4436
mem_cgroup_charge include/linux/memcontrol.h:671 [inline]
shmem_alloc_and_add_folio+0x857/0x14e0 mm/shmem.c:1796
shmem_get_folio_gfp+0x8dc/0x2370 mm/shmem.c:2192
shmem_read_folio_gfp+0xd6/0x170 mm/shmem.c:5205
drm_gem_get_pages+0x21b/0xe50 drivers/gpu/drm/drm_gem.c:568
drm_gem_shmem_get_pages+0xdd/0x290 drivers/gpu/drm/drm_gem_shmem_helper.c:177
drm_gem_shmem_vmap+0x2ba/0x630 drivers/gpu/drm/drm_gem_shmem_helper.c:337
drm_gem_vmap drivers/gpu/drm/drm_gem.c:1205 [inline]
drm_gem_vmap_unlocked+0x103/0x1d0 drivers/gpu/drm/drm_gem.c:1247
drm_gem_fb_vmap+0xa6/0x810 drivers/gpu/drm/drm_gem_framebuffer_helper.c:365
drm_atomic_helper_prepare_planes+0x2b2/0xb50 drivers/gpu/drm/drm_atomic_helper.c:2601
drm_atomic_helper_commit+0x18b/0x9f0 drivers/gpu/drm/drm_atomic_helper.c:2029
drm_atomic_commit+0x296/0x2f0 drivers/gpu/drm/drm_atomic.c:1522
drm_atomic_helper_update_plane+0x238/0x3a0 drivers/gpu/drm/drm_atomic_helper.c:3190
drm_mode_cursor_universal drivers/gpu/drm/drm_plane.c:1229 [inline]
drm_mode_cursor_common+0xd6e/0x1570 drivers/gpu/drm/drm_plane.c:1288
drm_mode_cursor_ioctl+0xe1/0x160 drivers/gpu/drm/drm_plane.c:1338
drm_ioctl_kernel+0x33a/0x440 drivers/gpu/drm/drm_ioctl.c:745
drm_ioctl+0x611/0xad0 drivers/gpu/drm/drm_ioctl.c:842
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
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: 0033:0x7f1080b75f19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f10819cb048 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1080d05f60 RCX: 00007f1080b75f19
RDX: 0000000020000340 RSI: 00000000c01c64a3 RDI: 0000000000000003
RBP: 00007f1080be4e68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1080d05f60 R15: 00007ffd9470ba98