INFO: task khugepaged:38 blocked for more than 143 seconds.
Not tainted 6.12.0-rc2-syzkaller-00058-g75b607fab38d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:khugepaged state:D stack:25728 pid:38 tgid:38 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2591
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
__flush_work+0xa37/0xc50 kernel/workqueue.c:4217
__lru_add_drain_all+0x4f6/0x560 mm/swap.c:888
khugepaged_do_scan mm/khugepaged.c:2502 [inline]
khugepaged+0x1bf/0x1dc0 mm/khugepaged.c:2571
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
INFO: task jbd2/sda1-8:4635 blocked for more than 143 seconds.
Not tainted 6.12.0-rc2-syzkaller-00058-g75b607fab38d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:22864 pid:4635 tgid:4635 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
io_schedule+0x8d/0x110 kernel/sched/core.c:7559
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_buffer include/linux/buffer_head.h:414 [inline]
journal_wait_on_commit_record fs/jbd2/commit.c:171 [inline]
jbd2_journal_commit_transaction+0x3df6/0x67e0 fs/jbd2/commit.c:887
kjournald2+0x41c/0x7b0 fs/jbd2/journal.c:201
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
INFO: task syz-executor:5205 blocked for more than 144 seconds.
Not tainted 6.12.0-rc2-syzkaller-00058-g75b607fab38d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20528 pid:5205 tgid:5205 ppid:5203 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
start_this_handle+0x55d/0x2110 fs/jbd2/transaction.c:384
jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505
__ext4_journal_start_sb+0x239/0x600 fs/ext4/ext4_jbd2.c:112
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_dirty_inode+0x92/0x110 fs/ext4/inode.c:5981
__mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2493
generic_update_time fs/inode.c:2041 [inline]
inode_update_time fs/inode.c:2054 [inline]
__file_update_time fs/inode.c:2243 [inline]
file_update_time+0x3b3/0x430 fs/inode.c:2273
ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6102
do_page_mkwrite+0x198/0x480 mm/memory.c:3162
wp_page_shared mm/memory.c:3563 [inline]
do_wp_page+0x23d3/0x52d0 mm/memory.c:3713
handle_pte_fault+0x10e3/0x6800 mm/memory.c:5767
__handle_mm_fault mm/memory.c:5894 [inline]
handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6062
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7feda4e67344
RSP: 002b:00007ffcd93ac580 EFLAGS: 00010246
RAX: 00007feda2e48000 RBX: 000055558e4ec730 RCX: 0000000000000000
RDX: 1ffffffff08ecf78 RSI: 000055558e4e0610 RDI: 0000000000000001
RBP: 00007ffcd93aca60 R08: 000055558e4e0628 R09: 00000000000019ef
R10: 00007feda5d4b0b8 R11: 0000000000000246 R12: 00007ffcd93ac8b0
R13: 0000000000000005 R14: 00007ffcd93ac5f0 R15: 00007ffcd93ac6c0
INFO: task syz.0.462:8242 blocked for more than 145 seconds.
Not tainted 6.12.0-rc2-syzkaller-00058-g75b607fab38d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.462 state:D stack:23808 pid:8242 tgid:8242 ppid:8181 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
start_this_handle+0x55d/0x2110 fs/jbd2/transaction.c:384
jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505
__ext4_journal_start_sb+0x239/0x600 fs/ext4/ext4_jbd2.c:112
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_dirty_inode+0x92/0x110 fs/ext4/inode.c:5981
__mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2493
generic_update_time fs/inode.c:2041 [inline]
inode_update_time fs/inode.c:2054 [inline]
__file_update_time fs/inode.c:2243 [inline]
file_update_time+0x3b3/0x430 fs/inode.c:2273
ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6102
do_page_mkwrite+0x198/0x480 mm/memory.c:3162
do_shared_fault mm/memory.c:5358 [inline]
do_fault mm/memory.c:5420 [inline]
do_pte_missing mm/memory.c:3965 [inline]
handle_pte_fault+0x11fa/0x6800 mm/memory.c:5751
__handle_mm_fault mm/memory.c:5894 [inline]
handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6062
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fa17e45cbe6
RSP: 002b:00007ffc34f9ce10 EFLAGS: 00010202
RAX: 0000001b33611000 RBX: 00007fa17f265720 RCX: 0000001b33610ff8
RDX: ffffffff81ccf5a3 RSI: 0000000000000008 RDI: 00007fa17f265720
RBP: 0000000000000124 R08: 00007fa17e720000 R09: 00007fa17e722000
R10: 0000000081ccf5a7 R11: 000000000000000c R12: ffffffff81ccf742
R13: 00007fa17e736018 R14: 0000000000000008 R15: 0000000000000426
INFO: task syz.0.462:8243 blocked for more than 146 seconds.
Not tainted 6.12.0-rc2-syzkaller-00058-g75b607fab38d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.462 state:D stack:23512 pid:8243 tgid:8242 ppid:8181 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
jbd2_log_wait_commit+0x29f/0x4a0 fs/jbd2/journal.c:679
jbd2_journal_flush+0x15c/0xc10 fs/jbd2/journal.c:2446
__ext4_ioctl fs/ext4/ioctl.c:1463 [inline]
ext4_ioctl+0x2858/0x5590 fs/ext4/ioctl.c:1626
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xf9/0x170 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: 0033:0x7fa17e57dff9
RSP: 002b:00007fa17f455038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa17e735f80 RCX: 00007fa17e57dff9
RDX: 0000000020000180 RSI: 0000000040086610 RDI: 0000000000000008
RBP: 00007fa17e5f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa17e735f80 R15: 00007ffc34f9cd78
INFO: task syz.2.463:8244 blocked for more than 146 seconds.
Not tainted 6.12.0-rc2-syzkaller-00058-g75b607fab38d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.463 state:D stack:26616 pid:8244 tgid:8244 ppid:8192 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
start_this_handle+0x55d/0x2110 fs/jbd2/transaction.c:384
jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505
__ext4_journal_start_sb+0x239/0x600 fs/ext4/ext4_jbd2.c:112
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_dirty_inode+0x92/0x110 fs/ext4/inode.c:5981
__mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2493
generic_update_time fs/inode.c:2041 [inline]
inode_update_time fs/inode.c:2054 [inline]
__file_update_time fs/inode.c:2243 [inline]
file_update_time+0x3b3/0x430 fs/inode.c:2273
ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6102
do_page_mkwrite+0x198/0x480 mm/memory.c:3162
do_shared_fault mm/memory.c:5358 [inline]
do_fault mm/memory.c:5420 [inline]
do_pte_missing mm/memory.c:3965 [inline]
handle_pte_fault+0x11fa/0x6800 mm/memory.c:5751
__handle_mm_fault mm/memory.c:5894 [inline]
handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6062
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f3061c51b84
RSP: 002b:00007ffd0f797440 EFLAGS: 00010246
RAX: 00000000005ffdf0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b33620000 RSI: 0000000000600000 RDI: 00007f3061e71f90
RBP: 00007ffd0f79769c R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000000011 R11: 0000000000000293 R12: 0000000000000032
R13: 00000000000762ff R14: 0000000000075fc8 R15: 00007ffd0f7976f0
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720
1 lock held by khugepaged/38:
#0: ffffffff8e9f8fe8 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x66/0x560 mm/swap.c:843
4 locks held by kworker/u8:5/746:
#0: ffff88801baeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801baeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90002f9fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90002f9fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcb2dd0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:580
#3: ffff888059f1d428 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_destruct+0x110/0x2e0 drivers/net/wireguard/device.c:249
2 locks held by getty/4973:
#0: ffff8880325b10a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by syz-executor/5205:
#0: ffff88807a624b68 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:704 [inline]
#0: ffff88807a624b68 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6228
#1: ffff88802e722518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1716 [inline]
#1: ffff88802e722518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1881 [inline]
#1: ffff88802e722518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6101
2 locks held by kworker/1:6/5299:
1 lock held by syz.3.236/6846:
2 locks held by syz-executor/8209:
#0: ffff88802e722420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88805bed0de0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff88805bed0de0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:4026
2 locks held by syz-executor/8218:
#0: ffff88802e722420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88805bed17c8 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff88805bed17c8 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:4026
2 locks held by syz.0.462/8242:
#0: ffff8880657fc148 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:704 [inline]
#0: ffff8880657fc148 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6228
#1: ffff88802e722518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1716 [inline]
#1: ffff88802e722518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1881 [inline]
#1: ffff88802e722518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6101
2 locks held by syz.0.462/8243:
#0: ffff88802e722420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write_file+0x5e/0x200 fs/namespace.c:559
#1: ffff88802e726160 (&journal->j_barrier){+.+.}-{3:3}, at: jbd2_journal_lock_updates+0x2b4/0x380 fs/jbd2/transaction.c:889
2 locks held by syz.2.463/8244:
#0: ffff8880302bb808 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:704 [inline]
#0: ffff8880302bb808 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6228
#1: ffff88802e722518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1716 [inline]
#1: ffff88802e722518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1881 [inline]
#1: ffff88802e722518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6101
2 locks held by dhcpcd/8311:
#0: ffff88805bdd7408 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#0: ffff88805bdd7408 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release net/socket.c:657 [inline]
#0: ffff88805bdd7408 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: sock_close+0x90/0x240 net/socket.c:1426
#1: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#1: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:976
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc2-syzkaller-00058-g75b607fab38d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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+0xff4/0x1040 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 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111