INFO: task syz.1.40:6873 blocked for more than 143 seconds.
Not tainted 6.4.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.40 state:D stack:14520 pid:6873 ppid:5982 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x6a7/0x9b0 kernel/sched/core.c:6669
schedule+0x68/0xc0 kernel/sched/core.c:6745
xfs_ail_push_all_sync+0x9f/0x100 fs/xfs/xfs_trans_ail.c:742
xfs_log_quiesce+0x63/0x260 fs/xfs/xfs_log.c:1104
xfs_fs_freeze+0x3c/0x80 fs/xfs/xfs_super.c:925
freeze_super+0x11c/0x180 fs/super.c:1719
freeze_bdev+0x62/0xc0 block/bdev.c:253
xfs_fs_goingdown+0x2f/0xa0 fs/xfs/xfs_fsops.c:476
xfs_file_ioctl+0x7fb/0xc70 fs/xfs/xfs_ioctl.c:2106
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x6b/0xb0 fs/ioctl.c:856
do_syscall_64+0x46/0xc0
entry_SYSCALL_64_after_hwframe+0x73/0xdd
RIP: 0033:0x7f0f8a180809
RSP: 002b:00007f0f8afbe058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0f8a346080 RCX: 00007f0f8a180809
RDX: 0000000020000080 RSI: 000000008004587d RDI: 0000000000000004
RBP: 00007f0f8a1f393e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f0f8a346080 R15: 00007ffe3a712c68
INFO: task syz.5.51:6894 blocked for more than 143 seconds.
Not tainted 6.4.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.51 state:D stack:14520 pid:6894 ppid:6023 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x6a7/0x9b0 kernel/sched/core.c:6669
schedule+0x68/0xc0 kernel/sched/core.c:6745
xfs_ail_push_all_sync+0x9f/0x100 fs/xfs/xfs_trans_ail.c:742
xfs_log_quiesce+0x63/0x260 fs/xfs/xfs_log.c:1104
xfs_fs_freeze+0x3c/0x80 fs/xfs/xfs_super.c:925
freeze_super+0x11c/0x180 fs/super.c:1719
freeze_bdev+0x62/0xc0 block/bdev.c:253
xfs_fs_goingdown+0x2f/0xa0 fs/xfs/xfs_fsops.c:476
xfs_file_ioctl+0x7fb/0xc70 fs/xfs/xfs_ioctl.c:2106
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x6b/0xb0 fs/ioctl.c:856
do_syscall_64+0x46/0xc0
entry_SYSCALL_64_after_hwframe+0x73/0xdd
RIP: 0033:0x7f99f6380809
RSP: 002b:00007f99f61de058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f99f6546080 RCX: 00007f99f6380809
RDX: 0000000020000080 RSI: 000000008004587d RDI: 0000000000000004
RBP: 00007f99f63f393e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f99f6546080 R15: 00007ffe2db1dd08
INFO: task syz.6.57:7473 blocked for more than 143 seconds.
Not tainted 6.4.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.57 state:D stack:13792 pid:7473 ppid:6934 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x6a7/0x9b0 kernel/sched/core.c:6669
schedule+0x68/0xc0 kernel/sched/core.c:6745
xfs_ail_push_all_sync+0x9f/0x100 fs/xfs/xfs_trans_ail.c:742
xfs_log_quiesce+0x63/0x260 fs/xfs/xfs_log.c:1104
xfs_fs_freeze+0x3c/0x80 fs/xfs/xfs_super.c:925
freeze_super+0x11c/0x180 fs/super.c:1719
freeze_bdev+0x62/0xc0 block/bdev.c:253
xfs_fs_goingdown+0x2f/0xa0 fs/xfs/xfs_fsops.c:476
xfs_file_ioctl+0x7fb/0xc70 fs/xfs/xfs_ioctl.c:2106
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x6b/0xb0 fs/ioctl.c:856
do_syscall_64+0x46/0xc0
entry_SYSCALL_64_after_hwframe+0x73/0xdd
RIP: 0033:0x7f7546380809
RSP: 002b:00007f75471f5058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7546546080 RCX: 00007f7546380809
RDX: 0000000020000080 RSI: 000000008004587d RDI: 0000000000000004
RBP: 00007f75463f393e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f7546546080 R15: 00007ffdefcf0a88
Showing all locks held in the system:
2 locks held by kworker/u4:0/10:
#0: ffff888100074938 ((wq_completion)events_unbound){....}-{0:0}, at: process_one_work+0x1ce/0x490 kernel/workqueue.c:2378
#1: ffffc9000005be68 (connector_reaper_work){....}-{0:0}, at: process_one_work+0x1f8/0x490 kernel/workqueue.c:2380
2 locks held by kworker/u4:1/12:
#0: ffff888100074938 ((wq_completion)events_unbound){....}-{0:0}, at: process_one_work+0x1ce/0x490 kernel/workqueue.c:2378
#1: ffffc9000006be68 ((reaper_work).work){....}-{0:0}, at: process_one_work+0x1f8/0x490 kernel/workqueue.c:2380
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff83dee468 (rcu_tasks.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_one_gp kernel/rcu/tasks.h:518 [inline]
#0: ffffffff83dee468 (rcu_tasks.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_kthread+0x9c/0x460 kernel/rcu/tasks.h:563
1 lock held by rcu_tasks_trace/14:
#0: ffffffff83dee748 (rcu_tasks_trace.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_one_gp kernel/rcu/tasks.h:518 [inline]
#0: ffffffff83dee748 (rcu_tasks_trace.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_kthread+0x9c/0x460 kernel/rcu/tasks.h:563
1 lock held by khungtaskd/28:
#0: ffffffff83dee340 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 include/trace/events/initcall.h:48
2 locks held by kworker/1:3/2976:
#0: ffff888100071338 ((wq_completion)rcu_gp){....}-{0:0}, at: process_one_work+0x1ce/0x490 kernel/workqueue.c:2378
#1: ffffc90009adfe68 ((work_completion)(&rew->rew_work)){....}-{0:0}, at: process_one_work+0x1f8/0x490 kernel/workqueue.c:2380
2 locks held by getty/3357:
#0: ffff888115c4d098 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243
#1: ffffc9000ae272f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x20e/0x8e0 drivers/tty/n_tty.c:2176
5 locks held by syz.1.40/6873:
#0: ffff8881104c1618 (&bdev->bd_fsfreeze_mutex){....}-{3:3}, at: freeze_bdev+0x23/0xc0 block/bdev.c:243
#1: ffff888115a2f450 (sb_writers#13){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#1: ffff888115a2f450 (sb_writers#13){....}-{0:0}, at: freeze_super+0x78/0x180 fs/super.c:1697
#2: ffff888115a2f0e0 (&type->s_umount_key#47){....}-{3:3}, at: freeze_super+0x80/0x180 fs/super.c:1698
#3: ffff888115a2f548 (sb_pagefaults#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#3: ffff888115a2f548 (sb_pagefaults#2){....}-{0:0}, at: freeze_super+0x99/0x180 fs/super.c:1702
#4: ffff888115a2f640 (sb_internal#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#4: ffff888115a2f640 (sb_internal#2){....}-{0:0}, at: freeze_super+0x109/0x180 fs/super.c:1716
5 locks held by syz.5.51/6894:
#0: ffff8881104c4018 (&bdev->bd_fsfreeze_mutex){....}-{3:3}, at: freeze_bdev+0x23/0xc0 block/bdev.c:243
#1: ffff88810b288450 (sb_writers#13){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#1: ffff88810b288450 (sb_writers#13){....}-{0:0}, at: freeze_super+0x78/0x180 fs/super.c:1697
#2: ffff88810b2880e0 (&type->s_umount_key#47){....}-{3:3}, at: freeze_super+0x80/0x180 fs/super.c:1698
#3: ffff88810b288548 (sb_pagefaults#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#3: ffff88810b288548 (sb_pagefaults#2){....}-{0:0}, at: freeze_super+0x99/0x180 fs/super.c:1702
#4: ffff88810b288640 (sb_internal#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#4: ffff88810b288640 (sb_internal#2){....}-{0:0}, at: freeze_super+0x109/0x180 fs/super.c:1716
5 locks held by syz.6.57/7473:
#0: ffff8881104c4a98 (&bdev->bd_fsfreeze_mutex){....}-{3:3}, at: freeze_bdev+0x23/0xc0 block/bdev.c:243
#1: ffff888160cb0450 (sb_writers#13){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#1: ffff888160cb0450 (sb_writers#13){....}-{0:0}, at: freeze_super+0x78/0x180 fs/super.c:1697
#2: ffff888160cb00e0 (&type->s_umount_key#47){....}-{3:3}, at: freeze_super+0x80/0x180 fs/super.c:1698
#3: ffff888160cb0548 (sb_pagefaults#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#3: ffff888160cb0548 (sb_pagefaults#2){....}-{0:0}, at: freeze_super+0x99/0x180 fs/super.c:1702
#4: ffff888160cb0640 (sb_internal#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#4: ffff888160cb0640 (sb_internal#2){....}-{0:0}, at: freeze_super+0x109/0x180 fs/super.c:1716
5 locks held by syz.0.75/8172:
#0: ffff8881104c0b98 (&bdev->bd_fsfreeze_mutex){....}-{3:3}, at: freeze_bdev+0x23/0xc0 block/bdev.c:243
#1: ffff888179c4d450 (sb_writers#13){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#1: ffff888179c4d450 (sb_writers#13){....}-{0:0}, at: freeze_super+0x78/0x180 fs/super.c:1697
#2: ffff888179c4d0e0 (&type->s_umount_key#47){....}-{3:3}, at: freeze_super+0x80/0x180 fs/super.c:1698
#3: ffff888179c4d548 (sb_pagefaults#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#3: ffff888179c4d548 (sb_pagefaults#2){....}-{0:0}, at: freeze_super+0x99/0x180 fs/super.c:1702
#4: ffff888179c4d640 (sb_internal#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#4: ffff888179c4d640 (sb_internal#2){....}-{0:0}, at: freeze_super+0x109/0x180 fs/super.c:1716
5 locks held by syz.8.79/8778:
#0: ffff8881104c5f98 (&bdev->bd_fsfreeze_mutex){....}-{3:3}, at: freeze_bdev+0x23/0xc0 block/bdev.c:243
#1: ffff888171cc0450 (sb_writers#13){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#1: ffff888171cc0450 (sb_writers#13){....}-{0:0}, at: freeze_super+0x78/0x180 fs/super.c:1697
#2: ffff888171cc00e0 (&type->s_umount_key#47){....}-{3:3}, at: freeze_super+0x80/0x180 fs/super.c:1698
#3: ffff888171cc0548 (sb_pagefaults#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#3: ffff888171cc0548 (sb_pagefaults#2){....}-{0:0}, at: freeze_super+0x99/0x180 fs/super.c:1702
#4: ffff888171cc0640 (sb_internal#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#4: ffff888171cc0640 (sb_internal#2){....}-{0:0}, at: freeze_super+0x109/0x180 fs/super.c:1716
5 locks held by syz.3.95/9623:
#0: ffff8881104c2b18 (&bdev->bd_fsfreeze_mutex){....}-{3:3}, at: freeze_bdev+0x23/0xc0 block/bdev.c:243
#1: ffff88817aaf9450 (sb_writers#13){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#1: ffff88817aaf9450 (sb_writers#13){....}-{0:0}, at: freeze_super+0x78/0x180 fs/super.c:1697
#2: ffff88817aaf90e0 (&type->s_umount_key#47){....}-{3:3}, at: freeze_super+0x80/0x180 fs/super.c:1698
#3: ffff88817aaf9548 (sb_pagefaults#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#3: ffff88817aaf9548 (sb_pagefaults#2){....}-{0:0}, at: freeze_super+0x99/0x180 fs/super.c:1702
#4: ffff88817aaf9640 (sb_internal#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#4: ffff88817aaf9640 (sb_internal#2){....}-{0:0}, at: freeze_super+0x109/0x180 fs/super.c:1716
5 locks held by syz.9.124/10548:
#0: ffff8881104c6a18 (&bdev->bd_fsfreeze_mutex){....}-{3:3}, at: freeze_bdev+0x23/0xc0 block/bdev.c:243
#1: ffff88815a63e450 (sb_writers#13){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#1: ffff88815a63e450 (sb_writers#13){....}-{0:0}, at: freeze_super+0x78/0x180 fs/super.c:1697
#2: ffff88815a63e0e0 (&type->s_umount_key#47){....}-{3:3}, at: freeze_super+0x80/0x180 fs/super.c:1698
#3: ffff88815a63e548 (sb_pagefaults#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#3: ffff88815a63e548 (sb_pagefaults#2){....}-{0:0}, at: freeze_super+0x99/0x180 fs/super.c:1702
#4: ffff88815a63e640 (sb_internal#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#4: ffff88815a63e640 (sb_internal#2){....}-{0:0}, at: freeze_super+0x109/0x180 fs/super.c:1716
5 locks held by syz.7.308/11475:
#0: ffff8881104c5518 (&bdev->bd_fsfreeze_mutex){....}-{3:3}, at: freeze_bdev+0x23/0xc0 block/bdev.c:243
#1: ffff8881727b4450 (sb_writers#13){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#1: ffff8881727b4450 (sb_writers#13){....}-{0:0}, at: freeze_super+0x78/0x180 fs/super.c:1697
#2: ffff8881727b40e0 (&type->s_umount_key#47){....}-{3:3}, at: freeze_super+0x80/0x180 fs/super.c:1698
#3: ffff8881727b4548 (sb_pagefaults#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#3: ffff8881727b4548 (sb_pagefaults#2){....}-{0:0}, at: freeze_super+0x99/0x180 fs/super.c:1702
#4: ffff8881727b4640 (sb_internal#2){....}-{0:0}, at: sb_wait_write fs/super.c:1606 [inline]
#4: ffff8881727b4640 (sb_internal#2){....}-{0:0}, at: freeze_super+0x109/0x180 fs/super.c:1716
1 lock held by syz-executor/11508:
#0: ffffffff83def538 (rcu_state.exp_mutex){....}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#0: ffffffff83def538 (rcu_state.exp_mutex){....}-{3:3}, at: synchronize_rcu_expedited+0x3a0/0x700 kernel/rcu/tree_exp.h:992
1 lock held by syz-executor/12405:
#0: ffffffff83def538 (rcu_state.exp_mutex){....}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff83def538 (rcu_state.exp_mutex){....}-{3:3}, at: synchronize_rcu_expedited+0x240/0x700 kernel/rcu/tree_exp.h:992
1 lock held by syz.6.2075/15614:
#0: ffff888102ee6f60 (&lo->lo_mutex){....}-{3:3}, at: loop_set_status+0x21/0x280 drivers/block/loop.c:1269
1 lock held by syz.1.2079/15624:
#0: ffff888108a63b60 (&lo->lo_mutex){....}-{3:3}, at: loop_set_status+0x21/0x280 drivers/block/loop.c:1269
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x83/0xd0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x146/0x160 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x8b/0x140 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0x4f4/0x520 kernel/hung_task.c:379
kthread+0xe9/0x100 kernel/kthread.c:379
ret_from_fork+0x29/0x50 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2587 Comm: kworker/u4:5 Not tainted 6.4.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline]
RIP: 0010:wrmsrl arch/x86/include/asm/msr.h:262 [inline]
RIP: 0010:native_x2apic_icr_write arch/x86/include/asm/apic.h:238 [inline]
RIP: 0010:__x2apic_send_IPI_dest arch/x86/kernel/apic/x2apic_phys.c:123 [inline]
RIP: 0010:x2apic_send_IPI+0x2e/0x60 arch/x86/kernel/apic/x2apic_phys.c:48
Code: 48 63 c7 48 8b 04 c5 e0 e8 ac 83 0f b7 90 c0 59 01 00 0f ae f0 0f ae e8 83 fe 02 b8 00 04 00 00 0f 45 c6 b9 30 08 00 00 0f 30 <66> 90 c3 cc cc cc cc f3 0f 1e fa 89 c0 48 c1 e2 20 48 09 c2 bf 30
RSP: 0018:ffffc9000a227c60 EFLAGS: 00000206
RAX: 00000000000000fb RBX: 0000000000000001 RCX: 0000000000000830
RDX: 0000000000000000 RSI: 00000000000000fb RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0005800000000000
R10: 0000000000000000 R11: ffffffff81115a60 R12: 0000000000000001
R13: 0000000000000002 R14: 0000000000000001 R15: ffff888237d30780
FS: 0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4a9c25f000 CR3: 0000000003cbc000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_send_call_function_single_ipi arch/x86/include/asm/smp.h:109 [inline]
send_call_function_single_ipi kernel/smp.c:112 [inline]
smp_call_function_many_cond+0x51d/0x9d0 kernel/smp.c:810
on_each_cpu_cond_mask+0x3a/0x70 kernel/smp.c:996
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1770 [inline]
text_poke_bp_batch+0x217/0x300 arch/x86/kernel/alternative.c:2032
text_poke_flush arch/x86/kernel/alternative.c:2161 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2168
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked kernel/jump_label.c:235 [inline]
static_key_disable+0x3f/0x60 kernel/jump_label.c:243
toggle_allocation_gate+0xe2/0x130 mm/kfence/core.c:836
process_one_work+0x245/0x490 kernel/workqueue.c:2405
worker_thread+0x218/0x370 kernel/workqueue.c:2552
kthread+0xe9/0x100 kernel/kthread.c:379
ret_from_fork+0x29/0x50 arch/x86/entry/entry_64.S:308