INFO: task syz-executor:5835 blocked for more than 143 seconds.
Not tainted 6.12.0-syzkaller-07749-g28eb75e178d3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:23520 pid:5835 tgid:5835 ppid:5833 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
io_schedule+0xbf/0x130 kernel/sched/core.c:7681
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
__wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x6a/0x390 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830
__ext4_mark_inode_dirty+0x1a6/0x890 fs/ext4/inode.c:6004
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041
__mark_inode_dirty+0x1f6/0xe60 fs/fs-writeback.c:2515
generic_update_time+0xcf/0xf0 fs/inode.c:2113
inode_update_time fs/inode.c:2126 [inline]
__file_update_time fs/inode.c:2354 [inline]
file_update_time+0x17d/0x1c0 fs/inode.c:2384
ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6159
do_page_mkwrite+0x177/0x380 mm/memory.c:3162
wp_page_shared mm/memory.c:3563 [inline]
do_wp_page+0xcbf/0x4930 mm/memory.c:3713
handle_pte_fault mm/memory.c:5782 [inline]
__handle_mm_fault+0x1a93/0x2a10 mm/memory.c:5909
handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6077
do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f745f056465
RSP: 002b:00007fff384eecf0 EFLAGS: 00010216
RAX: 00007f7458dd1d64 RBX: 00007fff384eee00 RCX: 0000000000000000
RDX: 00007f7458dd1d60 RSI: 0000000000000008 RDI: 00007fff384eee00
RBP: 00000000000003e6 R08: 0000000000000000 R09: 0000000000000000
R10: 00007fff384eede0 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000002e29c R14: fffffffffffd1d64 R15: 000000000002e29c
INFO: task syz.3.4447:1114 blocked for more than 143 seconds.
Not tainted 6.12.0-syzkaller-07749-g28eb75e178d3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.4447 state:D stack:25808 pid:1114 tgid:1114 ppid:29331 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
io_schedule+0xbf/0x130 kernel/sched/core.c:7681
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
__wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x6a/0x390 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830
__ext4_mark_inode_dirty+0x1a6/0x890 fs/ext4/inode.c:6004
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041
__mark_inode_dirty+0x1f6/0xe60 fs/fs-writeback.c:2515
generic_update_time+0xcf/0xf0 fs/inode.c:2113
inode_update_time fs/inode.c:2126 [inline]
__file_update_time fs/inode.c:2354 [inline]
file_update_time+0x17d/0x1c0 fs/inode.c:2384
ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6159
do_page_mkwrite+0x177/0x380 mm/memory.c:3162
do_shared_fault mm/memory.c:5373 [inline]
do_fault mm/memory.c:5435 [inline]
do_pte_missing+0x29e/0x3e70 mm/memory.c:3965
handle_pte_fault mm/memory.c:5766 [inline]
__handle_mm_fault+0x100a/0x2a10 mm/memory.c:5909
handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6077
do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fc4cb85cd8a
RSP: 002b:00007fff9c409e60 EFLAGS: 00010202
RAX: 0000001b2c7d1000 RBX: 00007fc4cc665720 RCX: 0000001b2c7d0ff8
RDX: 0000001b2c220218 RSI: 0000000000000008 RDI: 00007fc4cc665720
RBP: ffffffff817b5cd4 R08: 00007fc4cbb36038 R09: 00007fc4cbb22000
R10: 00007fc4cafff008 R11: 000000000000001a R12: 000000000000001a
R13: 000000000000004d R14: ffffffff817b5128 R15: 0000000000000059
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8ddba840 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8ddba840 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8ddba840 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
2 locks held by getty/5611:
#0: ffff8880312830a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fc62f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
3 locks held by syz-executor/5835:
#0: ffff8880335fc070 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
#0: ffff8880335fc070 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6243
#1: ffff88814e7be518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3162
#2: ffff88814e7fa958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
5 locks held by kworker/u8:40/9250:
#0: ffff8880b873ed58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:598
#1: ffff8880b8728a88 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2c1/0x8e0 kernel/sched/psi.c:987
#2: ffff8880b8728a88 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_change+0x1a2/0x2d0 kernel/sched/psi.c:912
#3: ffff888011ebb8e0 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
#3: ffff888011ebb8e0 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report drivers/net/netdevsim/dev.c:791 [inline]
#3: ffff888011ebb8e0 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x1cc/0xd20 drivers/net/netdevsim/dev.c:851
#4: ffffffff9a519158 (&obj_hash[i].lock){-.-.}-{2:2}, at: backlog_lock_irq_save net/core/dev.c:233 [inline]
#4: ffffffff9a519158 (&obj_hash[i].lock){-.-.}-{2:2}, at: enqueue_to_backlog+0x16f/0xe60 net/core/dev.c:4880
6 locks held by kworker/u8:18/29001:
#0: ffff88801d68b148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc900040c7d80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
#2: ffff88814e7be0e0 (&type->s_umount_key#32){++++}-{4:4}, at: super_trylock_shared+0x1e/0xf0 fs/super.c:562
#3: ffff88814e7f8b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b3/0x820 mm/page-writeback.c:2683
#4: ffff88814e7fa958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
#5: ffff88807bc59658 (&ei->i_data_sem){++++}-{4:4}, at: ext4_map_blocks+0x352/0x1370 fs/ext4/inode.c:701
3 locks held by syz.3.4447/1114:
#0: ffff88806a7a8220 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
#0: ffff88806a7a8220 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6243
#1: ffff88814e7be518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3162
#2: ffff88814e7fa958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-syzkaller-07749-g28eb75e178d3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf0c/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 9257 Comm: kworker/u8:46 Not tainted 6.12.0-syzkaller-07749-g28eb75e178d3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:122 [inline]
RIP: 0010:lock_release+0x132/0x6f0 kernel/locking/lockdep.c:5862
Code: 35 23 5e 99 7e 49 8d be dc 0a 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 <38> d0 7c 08 84 d2 0f 85 59 05 00 00 41 8b b6 dc 0a 00 00 85 f6 0f
RSP: 0018:ffffc9000c8efa48 EFLAGS: 00000202
RAX: 0000000000000007 RBX: 1ffff9200191df4b RCX: ffffffff816a7bf9
RDX: 0000000000000000 RSI: ffffffff8bb05da0 RDI: ffff88805a95a8dc
RBP: ffffffff901d04d4 R08: 0000000000000000 R09: fffffbfff2039a3a
R10: ffffffff901cd1d7 R11: 0000000000000002 R12: ffff888027950fd8
R13: ffff888027950fc0 R14: ffff88805a959e00 R15: ffff88807f731e40
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005646935699a8 CR3: 000000000db7e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:165 [inline]
_raw_spin_unlock_bh+0x16/0x30 kernel/locking/spinlock.c:210
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_nc_purge_paths+0x1c6/0x390 net/batman-adv/network-coding.c:471
batadv_nc_worker+0x913/0x1060 net/batman-adv/network-coding.c:720
process_one_work+0x958/0x1b30 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244