Dear scheduler maintainers,
A lockdep splat gets triggered by WARN_ON_ONCE(is_migration_disabled()) in
set_task_cpu().
It seems a race triggerred e.g. by heavy load (in this case: kernel compile or
copying
large files into the filesystem). I don't think this is bcachefs-related,
though, as I
also found the same WARN triggered from other code (see: the second report
below). I have
only the two reports from 7.1.x, pasted below. In the most recent one,
set_task_cpu() got
triggered from mutex_unlock() in bcachefs.bch2_alloc_sectors_done_inlined().
Background on the bcachefs workqueues: The bch2_alloc_sectors_done_inlined can
run
on either bcachefs or bcachefs_copygc workqueue. Both workqueues are allocated
with
WQ_HIGHPRI|WQ_FREEZABLE|WQ_MEM_RECLAIM|WQ_UNBOUND, differing in
alloc_workqueue(max_active)
arg: bcachefs: 512, bcachefs_copygc: 1.
In case this matters, the CPU is AMD Threadripper 7960X (24-core). Source for
the
7.1.8+ kernel is at commit b5522de4e4e1 from git://rere.qmqm.pl/linux staging.
Best Regards
Michał Mirosław
------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
7.1.8+ #72 Tainted: G OE
------------------------------------------------------
kworker/u201:6/64564 is trying to acquire lock:
ffffffff8da67d80 (console_owner){-.-.}-{0:0}, at:
console_lock_spinning_enable+0x3c/0x60
but task is already holding lock:
ff11268eacf409a0 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0x50/0x710
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&p->pi_lock){-.-.}-{2:2}:
_raw_spin_lock_irqsave+0x3f/0x90
try_to_wake_up+0x50/0x710
create_worker+0x14f/0x1d0
workqueue_init+0x2c4/0x330
kernel_init_freeable+0x12f/0x2c0
kernel_init+0x16/0x130
ret_from_fork+0x29a/0x3c0
ret_from_fork_asm+0x11/0x20
-> #1 (&pool->lock){-.-.}-{2:2}:
_raw_spin_lock+0x30/0x70
__queue_work+0xd8/0x770
queue_work_on+0x9b/0xd0
soft_cursor+0x189/0x200
bit_cursor+0x2d1/0x530
hide_cursor+0x27/0xb0
vt_console_print+0x449/0x460
console_flush_one_record+0x2eb/0x4e0
console_unlock+0x78/0x140
vprintk_emit+0x352/0x420
_printk+0x57/0x80
bt_info+0x6d/0x90
btmtk_usb_setup+0x6e4/0xac4 [btmtk]
hci_dev_open_sync+0x107/0xc60
hci_dev_do_open+0x25/0x70
hci_power_on+0x4b/0x250
process_one_work+0x202/0x5d0
worker_thread+0x1dc/0x3e0
kthread+0xf0/0x130
ret_from_fork+0x29a/0x3c0
ret_from_fork_asm+0x11/0x20
-> #0 (console_owner){-.-.}-{0:0}:
__lock_acquire+0x1409/0x2690
lock_acquire+0xba/0x2f0
console_lock_spinning_enable+0x58/0x60
console_flush_one_record+0x2ad/0x4e0
console_unlock+0x78/0x140
vprintk_emit+0x352/0x420
_printk+0x57/0x80
__report_bug.cold+0x37/0xe2
report_bug+0x28/0x70
handle_bug+0x223/0x270
exc_invalid_op+0x13/0x60
asm_exc_invalid_op+0x16/0x20
set_task_cpu+0x27d/0x290
try_to_wake_up+0x169/0x710
wake_up_q+0x45/0x90
__mutex_unlock_slowpath+0x1b2/0x3c0
bch2_alloc_sectors_done_inlined+0x180/0x3a0 [bcachefs]
bch2_btree_reserve_get+0x45b/0x8a0 [bcachefs]
bch2_btree_update_start+0x83c/0xfc0 [bcachefs]
bch2_btree_split_leaf+0x5d/0x1e0 [bcachefs]
__bch2_trans_commit_error.isra.0+0x371/0xa90 [bcachefs]
bch2_trans_commit_error.isra.0+0x16/0x90 [bcachefs]
__bch2_trans_commit+0xab3/0x19c0 [bcachefs]
bch2_extent_update+0x281/0x370 [bcachefs]
bch2_write_index_default+0x269/0x550 [bcachefs]
__bch2_write_index+0x25d/0x730 [bcachefs]
bch2_write_point_do_index_updates+0xc4/0x1d0 [bcachefs]
process_one_work+0x202/0x5d0
worker_thread+0x1dc/0x3e0
kthread+0xf0/0x130
ret_from_fork+0x29a/0x3c0
ret_from_fork_asm+0x11/0x20
other info that might help us debug this:
Chain exists of:
console_owner --> &pool->lock --> &p->pi_lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&p->pi_lock);
lock(&pool->lock);
lock(&p->pi_lock);
lock(console_owner);
*** DEADLOCK ***
8 locks held by kworker/u201:6/64564:
#0: ff112682d7295550 ((wq_completion)bcachefs){+.+.}-{0:0}, at:
process_one_work+0x546/0x5d0
#1: ff614dc54aedfe40 ((work_completion)(&wp->index_update_work)){+.+.}-{0:0},
at: process_one_work+0x1ce/0x5d0
#2: ff112682cd810030 (&c->btree.trans.barrier){.+.+}-{0:0}, at:
__bch2_trans_get+0x1c6/0x3d0 [bcachefs]
#3: ff112682cd832bc0 (&c->gc.lock){.+.+}-{4:4}, at:
bch2_btree_update_start+0x378/0xfc0 [bcachefs]
#4: ff112687486a01e8 (bcachefs_btree){+.+.}-{0:0}, at:
__bch2_trans_relock+0x116/0x1d0 [bcachefs]
#5: ff11268eacf409a0 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0x50/0x710
#6: ffffffff8dc27fc0 (console_lock){+.+.}-{0:0}, at: _printk+0x57/0x80
#7: ffffffff8dc28018 (console_srcu){....}-{0:0}, at:
console_flush_one_record+0x81/0x4e0
stack backtrace:
CPU: 2 UID: 0 PID: 64564 Comm: kworker/u201:6 Tainted: G OE
7.1.8+ #72 PREEMPTLAZY
Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Hardware name: ASUS System Product Name/Pro WS TRX50-SAGE WIFI, BIOS 1317
02/03/2026
Workqueue: bcachefs bch2_write_point_do_index_updates [bcachefs]
Call Trace:
<TASK>
dump_stack_lvl+0x69/0xa0
print_circular_bug.cold+0x178/0x1be
check_noncircular+0x12b/0x140
? save_trace+0x49/0x3a0
? srso_alias_return_thunk+0x5/0xfbef5
__lock_acquire+0x1409/0x2690
lock_acquire+0xba/0x2f0
? console_lock_spinning_enable+0x3c/0x60
? local_clock_noinstr+0x3a/0xd0
? srso_alias_return_thunk+0x5/0xfbef5
? srso_alias_return_thunk+0x5/0xfbef5
console_lock_spinning_enable+0x58/0x60
? console_lock_spinning_enable+0x3c/0x60
console_flush_one_record+0x2ad/0x4e0
console_unlock+0x78/0x140
vprintk_emit+0x352/0x420
? set_task_cpu+0x27d/0x290
_printk+0x57/0x80
? srso_alias_return_thunk+0x5/0xfbef5
? set_task_cpu+0x27d/0x290
__report_bug.cold+0x37/0xe2
? __bfs+0x13c/0x230
? set_task_cpu+0x27d/0x290
report_bug+0x28/0x70
handle_bug+0x223/0x270
exc_invalid_op+0x13/0x60
asm_exc_invalid_op+0x16/0x20
RIP: 0010:set_task_cpu+0x27d/0x290
Code: 00 84 c0 0f 85 15 fe ff ff 48 8d 3d dd 51 a7 01 67 48 0f b9 3a e9 04 fe
ff ff 0f 0b 66 83 bb c0 03 00 00 00 0f 84 da fd ff ff <0f> 0b e9 d3 fd ff ff 66
66 2e 0f 1f 84 00 00 00 00 00 90 0f 1f 44
RSP: 0018:ff614dc54aedf3a0 EFLAGS: 00010002
RAX: 0000000000000001 RBX: ff11268eacf40000 RCX: 0000000000000001
RDX: 0000000000000046 RSI: ff11268eacf409a0 RDI: ff11268f640156d8
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000000000
R13: ff11268eacf40988 R14: ff11268eacf40000 R15: 0000000000000000
try_to_wake_up+0x169/0x710
? mark_held_locks+0x40/0x70
wake_up_q+0x45/0x90
__mutex_unlock_slowpath+0x1b2/0x3c0
bch2_alloc_sectors_done_inlined+0x180/0x3a0 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
? __mutex_unlock_slowpath+0x3f/0x3c0
bch2_btree_reserve_get+0x45b/0x8a0 [bcachefs]
? bch2_btree_reserve_get+0x2c2/0x8a0 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
? __mutex_unlock_slowpath+0x3f/0x3c0
bch2_btree_update_start+0x83c/0xfc0 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
bch2_btree_split_leaf+0x5d/0x1e0 [bcachefs]
__bch2_trans_commit_error.isra.0+0x371/0xa90 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
? run_one_trans_trigger+0x195/0x280 [bcachefs]
bch2_trans_commit_error.isra.0+0x16/0x90 [bcachefs]
__bch2_trans_commit+0xab3/0x19c0 [bcachefs]
? bch2_extent_update+0x281/0x370 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
bch2_extent_update+0x281/0x370 [bcachefs]
? bch2_write_index_default+0x269/0x550 [bcachefs]
bch2_write_index_default+0x269/0x550 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
? srso_alias_return_thunk+0x5/0xfbef5
? lockdep_hardirqs_on_prepare+0xd3/0x180
? srso_alias_return_thunk+0x5/0xfbef5
? srso_alias_return_thunk+0x5/0xfbef5
? __lock_acquire+0x487/0x2690
? __bch2_write_index+0x25d/0x730 [bcachefs]
__bch2_write_index+0x25d/0x730 [bcachefs]
? bch2_write_point_do_index_updates+0x2a/0x1d0 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
? mark_held_locks+0x40/0x70
? srso_alias_return_thunk+0x5/0xfbef5
bch2_write_point_do_index_updates+0xc4/0x1d0 [bcachefs]
process_one_work+0x202/0x5d0
? find_held_lock+0x2b/0x80
? srso_alias_return_thunk+0x5/0xfbef5
worker_thread+0x1dc/0x3e0
? rescuer_thread+0x5a0/0x5a0
kthread+0xf0/0x130
? kthread_affine_node+0xf0/0xf0
ret_from_fork+0x29a/0x3c0
? kthread_affine_node+0xf0/0xf0
ret_from_fork_asm+0x11/0x20
</TASK>
is_migration_disabled(p)
WARNING: kernel/sched/core.c:3339 at set_task_cpu+0x27d/0x290, CPU#2:
kworker/u201:6/64564
Modules linked in: ntfs3 uas usb_storage uinput rfcomm algif_hash
algif_skcipher af_alg bnep snd_seq_dummy snd_hrtimer snd_seq_midi
snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device nf_conntrack_netlink
xfrm_user xfrm_algo qrtr overlay cpufreq_powersave cpufreq_userspace
cpufreq_conservative xfs dm_raid btrfs libblake2b ccm bridge binfmt_misc
bcachefs(OE) lz4hc_compress lz4_compress hid_logitech_hidpp r8153_ecm cdc_ether
usbnet btusb nls_utf8 btmtk nls_cp852 pl2303 btrtl r8152 squashfs btbcm vfat
lz4_decompress mii cdc_acm hid_logitech_dj hid_dr usbserial btintel fat amdgpu
cxl_pci snd_hda_codec_alc882 cxl_mem snd_hda_codec_realtek_lib
snd_hda_codec_atihdmi snd_hda_codec_generic snd_hda_codec_hdmi cxl_acpi
cxl_port cxl_pmem mt7925e i2c_algo_bit mt7925_common libnvdimm drm_buddy
snd_hda_intel kvm_amd mt792x_lib drm_ttm_helper dax_hmem asus_ec_sensors ttm
mt76_connac_lib snd_intel_dspcfg kvm snd_hda_codec cxl_core mt76 video wmi_bmof
einj irqbypass pcspkr snd_hda_core drm_exec drm_suballoc_helper
snd_hwdep drm_panel_backlight_quirks mac80211 snd_pcm_oss snd_mixer_oss
gpu_sched amdxcp libarc4 snd_pcm drm_display_helper snd_timer cec 8250 rc_core
snd 8250_base backlight soundcore serial_mctrl_gpio ccp serial_base sg cfg80211
nft_masq nft_redir nfsd auth_rpcgss nfs_acl lockd grace nfs_localio
sch_fq_codel nft_chain_nat nf_nat sunrpc nf_conntrack nf_defrag_ipv6
nf_defrag_ipv4 nf_tables i2c_dev loop fuse tpm rng_core autofs4 raid10 raid456
async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid0
linear input_leds joydev xhci_pci xhci_hcd
CPU: 2 UID: 0 PID: 64564 Comm: kworker/u201:6 Tainted: G OE
7.1.8+ #72 PREEMPTLAZY
Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Hardware name: ASUS System Product Name/Pro WS TRX50-SAGE WIFI, BIOS 1317
02/03/2026
Workqueue: bcachefs bch2_write_point_do_index_updates [bcachefs]
RIP: 0010:set_task_cpu+0x27d/0x290
Code: 00 84 c0 0f 85 15 fe ff ff 48 8d 3d dd 51 a7 01 67 48 0f b9 3a e9 04 fe
ff ff 0f 0b 66 83 bb c0 03 00 00 00 0f 84 da fd ff ff <0f> 0b e9 d3 fd ff ff 66
66 2e 0f 1f 84 00 00 00 00 00 90 0f 1f 44
RSP: 0018:ff614dc54aedf3a0 EFLAGS: 00010002
RAX: 0000000000000001 RBX: ff11268eacf40000 RCX: 0000000000000001
RDX: 0000000000000046 RSI: ff11268eacf409a0 RDI: ff11268f640156d8
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000000000
R13: ff11268eacf40988 R14: ff11268eacf40000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ff11268660912000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002d8b08291fc0 CR3: 0000000c92079001 CR4: 0000000000771ef0
PKRU: 55555554
Call Trace:
<TASK>
try_to_wake_up+0x169/0x710
? mark_held_locks+0x40/0x70
wake_up_q+0x45/0x90
__mutex_unlock_slowpath+0x1b2/0x3c0
bch2_alloc_sectors_done_inlined+0x180/0x3a0 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
? __mutex_unlock_slowpath+0x3f/0x3c0
bch2_btree_reserve_get+0x45b/0x8a0 [bcachefs]
? bch2_btree_reserve_get+0x2c2/0x8a0 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
? __mutex_unlock_slowpath+0x3f/0x3c0
bch2_btree_update_start+0x83c/0xfc0 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
bch2_btree_split_leaf+0x5d/0x1e0 [bcachefs]
__bch2_trans_commit_error.isra.0+0x371/0xa90 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
? run_one_trans_trigger+0x195/0x280 [bcachefs]
bch2_trans_commit_error.isra.0+0x16/0x90 [bcachefs]
__bch2_trans_commit+0xab3/0x19c0 [bcachefs]
? bch2_extent_update+0x281/0x370 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
bch2_extent_update+0x281/0x370 [bcachefs]
? bch2_write_index_default+0x269/0x550 [bcachefs]
bch2_write_index_default+0x269/0x550 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
? srso_alias_return_thunk+0x5/0xfbef5
? lockdep_hardirqs_on_prepare+0xd3/0x180
? srso_alias_return_thunk+0x5/0xfbef5
? srso_alias_return_thunk+0x5/0xfbef5
? __lock_acquire+0x487/0x2690
? __bch2_write_index+0x25d/0x730 [bcachefs]
__bch2_write_index+0x25d/0x730 [bcachefs]
? bch2_write_point_do_index_updates+0x2a/0x1d0 [bcachefs]
? srso_alias_return_thunk+0x5/0xfbef5
? mark_held_locks+0x40/0x70
? srso_alias_return_thunk+0x5/0xfbef5
bch2_write_point_do_index_updates+0xc4/0x1d0 [bcachefs]
process_one_work+0x202/0x5d0
? find_held_lock+0x2b/0x80
? srso_alias_return_thunk+0x5/0xfbef5
worker_thread+0x1dc/0x3e0
? rescuer_thread+0x5a0/0x5a0
kthread+0xf0/0x130
? kthread_affine_node+0xf0/0xf0
ret_from_fork+0x29a/0x3c0
? kthread_affine_node+0xf0/0xf0
ret_from_fork_asm+0x11/0x20
</TASK>
irq event stamp: 124856
hardirqs last enabled at (124855): [<ffffffff8d17d047>]
_raw_spin_unlock_irqrestore+0x47/0x70
hardirqs last disabled at (124856): [<ffffffff8d17cdba>]
_raw_spin_lock_irqsave+0x6a/0x90
softirqs last enabled at (124838): [<ffffffff8c2e5544>]
__irq_exit_rcu+0xc4/0x100
softirqs last disabled at (124831): [<ffffffff8c2e5544>]
__irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
7.1.5+ #70 Tainted: G OE
------------------------------------------------------
kworker/1:0H/26 is trying to acquire lock:
ffffffff91a67d80 (console_owner){-.-.}-{0:0}, at:
console_lock_spinning_enable+0x3c/0x60
but task is already holding lock:
ff265b2feedf1c60 (&rq->__lock){-.-.}-{2:2}, at:
raw_spin_rq_lock_nested+0x22/0xa0
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&rq->__lock){-.-.}-{2:2}:
_raw_spin_lock_nested+0x2e/0x70
raw_spin_rq_lock_nested+0x22/0xa0
_task_rq_lock+0x45/0x110
cgroup_move_task+0x2c/0x110
css_set_move_task+0xd4/0x220
cgroup_post_fork+0x94/0x280
copy_process+0x2018/0x2430
kernel_clone+0xb2/0x440
user_mode_thread+0x5d/0x80
rest_init+0x1e/0x160
start_kernel+0x7a1/0x7b0
clear_bss+0x0/0x40
reserve_bios_regions+0x0/0x60
common_startup_64+0x13e/0x141
-> #2 (&p->pi_lock){-.-.}-{2:2}:
_raw_spin_lock_irqsave+0x3f/0x90
try_to_wake_up+0x50/0x710
create_worker+0x14f/0x1d0
workqueue_init+0x2c4/0x330
kernel_init_freeable+0x12f/0x2c0
kernel_init+0x16/0x130
ret_from_fork+0x29a/0x3c0
ret_from_fork_asm+0x11/0x20
-> #1 (&pool->lock){-.-.}-{2:2}:
_raw_spin_lock+0x30/0x70
__queue_work+0x2ce/0x770
queue_work_on+0x9b/0xd0
soft_cursor+0x189/0x200
bit_cursor+0x2d1/0x530
hide_cursor+0x27/0xb0
vt_console_print+0x449/0x460
console_flush_one_record+0x2eb/0x4e0
console_unlock+0x78/0x140
vprintk_emit+0x352/0x420
_printk+0x57/0x80
bt_info+0x6d/0x90
btmtk_usb_setup+0x639/0x840 [btmtk]
hci_dev_open_sync+0x107/0xc60
hci_dev_do_open+0x25/0x70
hci_power_on+0x4b/0x250
process_one_work+0x202/0x5d0
worker_thread+0x1dc/0x3e0
kthread+0xf0/0x130
ret_from_fork+0x29a/0x3c0
ret_from_fork_asm+0x11/0x20
-> #0 (console_owner){-.-.}-{0:0}:
__lock_acquire+0x1409/0x2690
lock_acquire+0xba/0x2f0
console_lock_spinning_enable+0x58/0x60
console_flush_one_record+0x2ad/0x4e0
console_unlock+0x78/0x140
vprintk_emit+0x352/0x420
_printk+0x57/0x80
__report_bug.cold+0x37/0xe2
report_bug+0x28/0x70
handle_bug+0x223/0x270
exc_invalid_op+0x13/0x60
asm_exc_invalid_op+0x16/0x20
set_task_cpu+0x27d/0x290
__schedule+0x29fe/0x2d50
schedule+0x36/0xf0
worker_thread+0xbe/0x3e0
kthread+0xf0/0x130
ret_from_fork+0x29a/0x3c0
ret_from_fork_asm+0x11/0x20
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 ***
4 locks held by kworker/1:0H/26:
#0: ff265b38134a09a0 (&p->pi_lock){-.-.}-{2:2}, at: _task_rq_lock+0x29/0x110
#1: ff265b2feedf1c60 (&rq->__lock){-.-.}-{2:2}, at:
raw_spin_rq_lock_nested+0x22/0xa0
#2: ffffffff91c27fc0 (console_lock){+.+.}-{0:0}, at: _printk+0x57/0x80
#3: ffffffff91c28018 (console_srcu){....}-{0:0}, at:
console_flush_one_record+0x81/0x4e0
stack backtrace:
CPU: 1 UID: 0 PID: 26 Comm: kworker/1:0H Tainted: G OE 7.1.5+
#70 PREEMPTLAZY
Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Hardware name: ASUS System Product Name/Pro WS TRX50-SAGE WIFI, BIOS 1317
02/03/2026
Workqueue: 0x0 (kblockd)
Call Trace:
<TASK>
dump_stack_lvl+0x69/0xa0
print_circular_bug.cold+0x178/0x1be
check_noncircular+0x12b/0x140
? save_trace+0x49/0x3a0
? srso_alias_return_thunk+0x5/0xfbef5
__lock_acquire+0x1409/0x2690
lock_acquire+0xba/0x2f0
? console_lock_spinning_enable+0x3c/0x60
? local_clock_noinstr+0x9/0xd0
? srso_alias_return_thunk+0x5/0xfbef5
? srso_alias_return_thunk+0x5/0xfbef5
console_lock_spinning_enable+0x58/0x60
? console_lock_spinning_enable+0x3c/0x60
console_flush_one_record+0x2ad/0x4e0
console_unlock+0x78/0x140
vprintk_emit+0x352/0x420
? set_task_cpu+0x27d/0x290
_printk+0x57/0x80
? set_task_cpu+0x27d/0x290
__report_bug.cold+0x37/0xe2
? srso_alias_return_thunk+0x5/0xfbef5
? __lock_acquire+0x487/0x2690
? srso_alias_return_thunk+0x5/0xfbef5
? __update_load_avg_cfs_rq+0x2f0/0x390
? set_task_cpu+0x27d/0x290
report_bug+0x28/0x70
handle_bug+0x223/0x270
exc_invalid_op+0x13/0x60
asm_exc_invalid_op+0x16/0x20
RIP: 0010:set_task_cpu+0x27d/0x290
Code: 00 84 c0 0f 85 15 fe ff ff 48 8d 3d dd 50 a7 01 67 48 0f b9 3a e9 04 fe
ff ff 0f 0b 66 83 bb c0 03 00 00 00 0f 84 da fd ff ff <0f> 0b e9 d3 fd ff ff 66
66 2e 0f 1f 84 00 00 00 00 00 90 0f 1f 44
RSP: 0018:ff79e53c4478fd88 EFLAGS: 00010002
RAX: 0000000000000001 RBX: ff265b38134a0000 RCX: 0000000000000001
RDX: 0000000000000046 RSI: ff265b38134a09a0 RDI: ff265b2c80a63040
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000100000
R10: 000000000686f0c4 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff926dfc00 R14: ff265b2feedf1c00 R15: ff265b2feedf1c00
? set_task_cpu+0x1ff/0x290
__schedule+0x29fe/0x2d50
schedule+0x36/0xf0
worker_thread+0xbe/0x3e0
? rescuer_thread+0x5a0/0x5a0
kthread+0xf0/0x130
? kthread_affine_node+0xf0/0xf0
ret_from_fork+0x29a/0x3c0
? kthread_affine_node+0xf0/0xf0
ret_from_fork_asm+0x11/0x20
</TASK>
is_migration_disabled(p)
WARNING: kernel/sched/core.c:3339 at set_task_cpu+0x27d/0x290, CPU#1:
kworker/1:0H/26
Modules linked in: rfcomm algif_hash algif_skcipher af_alg bnep snd_seq_dummy
snd_hrtimer snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device
bridge nf_conntrack_netlink xfrm_user xfrm_algo qrtr overlay cpufreq_powersave
cpufreq_userspace cpufreq_conservative xfs dm_raid btrfs libblake2b binfmt_misc
bcachefs(OE) lz4hc_compress lz4_compress hid_logitech_hidpp r8153_ecm cdc_ether
usbnet nls_utf8 nls_cp852 btusb btmtk btrtl r8152 pl2303 btbcm vfat squashfs
lz4_decompress mii fat hid_logitech_dj cdc_acm hid_dr btintel usbserial amdgpu
snd_hda_codec_alc882 snd_hda_codec_realtek_lib snd_hda_codec_atihdmi
snd_hda_codec_generic snd_hda_codec_hdmi cxl_pci cxl_mem cxl_acpi snd_hda_intel
i2c_algo_bit cxl_port drm_buddy snd_intel_dspcfg drm_ttm_helper cxl_pmem
snd_hda_codec ttm kvm_amd libnvdimm snd_hda_core video mt7925e asus_ec_sensors
mt7925_common snd_hwdep drm_exec dax_hmem drm_suballoc_helper snd_pcm_oss
mt792x_lib kvm wmi_bmof drm_panel_backlight_quirks mt76_connac_lib
snd_mixer_oss cxl_core mt76
gpu_sched irqbypass pcspkr einj amdxcp snd_pcm mac80211 drm_display_helper
libarc4 snd_timer cec 8250 snd rc_core 8250_base soundcore backlight ccp
serial_mctrl_gpio serial_base sg nfsd auth_rpcgss nfs_acl lockd grace
nfs_localio sunrpc cfg80211 nft_masq nft_redir sch_fq_codel nft_chain_nat
nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables i2c_dev loop fuse
tpm rng_core autofs4 input_leds joydev raid10 raid456 async_raid6_recov
async_memcpy async_pq async_xor xor async_tx raid6_pq raid0 linear xhci_pci
xhci_hcd
CPU: 1 UID: 0 PID: 26 Comm: kworker/1:0H Tainted: G OE 7.1.5+
#70 PREEMPTLAZY
Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Hardware name: ASUS System Product Name/Pro WS TRX50-SAGE WIFI, BIOS 1317
02/03/2026
Workqueue: 0x0 (kblockd)
RIP: 0010:set_task_cpu+0x27d/0x290
Code: 00 84 c0 0f 85 15 fe ff ff 48 8d 3d dd 50 a7 01 67 48 0f b9 3a e9 04 fe
ff ff 0f 0b 66 83 bb c0 03 00 00 00 0f 84 da fd ff ff <0f> 0b e9 d3 fd ff ff 66
66 2e 0f 1f 84 00 00 00 00 00 90 0f 1f 44
RSP: 0018:ff79e53c4478fd88 EFLAGS: 00010002
RAX: 0000000000000001 RBX: ff265b38134a0000 RCX: 0000000000000001
RDX: 0000000000000046 RSI: ff265b38134a09a0 RDI: ff265b2c80a63040
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000100000
R10: 000000000686f0c4 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff926dfc00 R14: ff265b2feedf1c00 R15: ff265b2feedf1c00
FS: 0000000000000000(0000) GS:ff265b305c712000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000322c000b0000 CR3: 0000000514501006 CR4: 0000000000771ef0
PKRU: 55555554
Call Trace:
<TASK>
__schedule+0x29fe/0x2d50
schedule+0x36/0xf0
worker_thread+0xbe/0x3e0
? rescuer_thread+0x5a0/0x5a0
kthread+0xf0/0x130
? kthread_affine_node+0xf0/0xf0
ret_from_fork+0x29a/0x3c0
? kthread_affine_node+0xf0/0xf0
ret_from_fork_asm+0x11/0x20
</TASK>
irq event stamp: 3226690
hardirqs last enabled at (3226689): [<ffffffff91179f64>]
_raw_spin_unlock_irq+0x24/0x40
hardirqs last disabled at (3226690): [<ffffffff9116cf51>]
__schedule+0x13d1/0x2d50
softirqs last enabled at (3226332): [<ffffffff902e5544>]
__irq_exit_rcu+0xc4/0x100
softirqs last disabled at (3226323): [<ffffffff902e5544>]
__irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
