INFO: task syz-executor.2:6312 blocked for more than 143 seconds.
Not tainted 6.6.0-syzkaller-15494-g6bc986ab839c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23576 pid:6312 tgid:6186 ppid:5434 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1960/0x4a80 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
wait_extent_bit fs/btrfs/extent-io-tree.c:799 [inline]
lock_extent+0x69d/0x850 fs/btrfs/extent-io-tree.c:1843
btrfs_page_mkwrite+0x5bd/0xd10 fs/btrfs/inode.c:8151
do_page_mkwrite+0x197/0x470 mm/memory.c:2943
wp_page_shared mm/memory.c:3338 [inline]
do_wp_page+0x1d10/0x4d10 mm/memory.c:3478
handle_pte_fault mm/memory.c:5054 [inline]
__handle_mm_fault mm/memory.c:5179 [inline]
handle_mm_fault+0x1b1a/0x6650 mm/memory.c:5344
do_user_addr_fault arch/x86/mm/fault.c:1413 [inline]
handle_page_fault arch/x86/mm/fault.c:1505 [inline]
exc_page_fault+0x2ac/0x860 arch/x86/mm/fault.c:1561
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:rep_movs_alternative+0x33/0x70 arch/x86/lib/copy_user_64.S:58
Code: 40 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 <48> 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb
RSP: 0018:ffffc9000d0a7330 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000020000158 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc9000d0a73e0 RDI: 0000000020000120
RBP: ffffc9000d0a7498 R08: ffffc9000d0a7417 R09: 1ffff92001a14e82
R10: dffffc0000000000 R11: fffff52001a14e83 R12: 0000000000000038
R13: ffffc9000d0a73e0 R14: 0000000020000120 R15: ffffc9000d0a73e0
copy_user_generic arch/x86/include/asm/uaccess_64.h:112 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:133 [inline]
_copy_to_user+0x86/0xa0 lib/usercopy.c:41
copy_to_user include/linux/uaccess.h:191 [inline]
fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:145
emit_fiemap_extent+0x256/0x410 fs/btrfs/extent_io.c:2471
fiemap_process_hole+0xa27/0xaf0 fs/btrfs/extent_io.c:2729
extent_fiemap+0xeae/0x1fe0
btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7823
ioctl_fiemap fs/ioctl.c:220 [inline]
do_vfs_ioctl+0x19ea/0x2b40 fs/ioctl.c:811
__do_sys_ioctl fs/ioctl.c:869 [inline]
__se_sys_ioctl+0x81/0x170 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f0f1207cb29
RSP: 002b:00007f0f09ffe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0f1219c050 RCX: 00007f0f1207cb29
RDX: 0000000020000100 RSI: 00000000c020660b RDI: 0000000000000005
RBP: 00007f0f120c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f0f1219c050 R15: 00007ffc6344ec88
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d92d0a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92d0a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92d0a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
3 locks held by kworker/u4:3/48:
#0: ffff8880b993c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b9928808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffff88801cec20d8 (&lo->lo_work_lock){..-.}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:376 [inline]
#2: ffff88801cec20d8 (&lo->lo_work_lock){..-.}-{2:2}, at: loop_process_work+0x1dea/0x22a0 drivers/block/loop.c:1953
2 locks held by getty/4809:
#0: ffff88802a36a0a0 (&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+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by kworker/1:3/5069:
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#1: ffffc90003e2fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc90003e2fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
1 lock held by syz-executor.0/5435:
#0: ffffffff8d932a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8d932a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:996
4 locks held by syz-executor.2/6312:
#0: ffff888066d19818 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888066d19818 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:370
#1: ffff888012c6e0a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#1: ffff888012c6e0a0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5371 [inline]
#1: ffff888012c6e0a0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5431
#2: ffff88807b8a4510 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2943
#3: ffff888066d196a0 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8140
4 locks held by syz-executor.1/6907:
#0: ffff88807934cfc8 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff88807934cfc8 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:370
#1: ffff8880595501a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#1: ffff8880595501a0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5371 [inline]
#1: ffff8880595501a0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5431
#2: ffff8880251d8510 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2943
#3: ffff88807934ce50 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8140
4 locks held by syz-executor.5/7094:
#0: ffff888066c05910 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888066c05910 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:370
#1: ffff888059551e20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#1: ffff888059551e20 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5371 [inline]
#1: ffff888059551e20 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5431
#2: ffff888029360510 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2943
#3: ffff888066c05798 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8140
1 lock held by udevd/7114:
#0: ffff8880b983c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
1 lock held by syz-executor.5/7694:
1 lock held by udevadm/7699:
1 lock held by udevadm/7701:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-syzkaller-15494-g6bc986ab839c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfa9/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 58 Comm: kworker/u4:4 Not tainted 6.6.0-syzkaller-15494-g6bc986ab839c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:825 [inline]
RIP: 0010:batadv_iv_ogm_schedule+0x71d/0x1090 net/batman-adv/bat_iv_ogm.c:868
Code: e8 58 1b 8c f6 48 8b 74 24 60 48 ff c6 48 8b 84 24 98 00 00 00 42 0f b6 04 30 84 c0 48 8b 54 24 20 75 17 8b 02 48 39 c6 73 33 <48> 89 f3 e8 ab 09 ad f6 48 89 d8 e9 b7 fc ff ff 89 d1 80 e1 07 80
RSP: 0018:ffffc90001597a00 EFLAGS: 00000283
RAX: 0000000000000400 RBX: 0000000000000001 RCX: ffffc90001597903
RDX: ffff8880186506d0 RSI: 0000000000000319 RDI: ffffffff8bbdc640
RBP: ffffc90001597b38 R08: ffffffff8f00cd2f R09: 1ffffffff1e019a5
R10: dffffc0000000000 R11: fffffbfff1e019a6 R12: ffff88807e742800
R13: ffff8880186506c0 R14: dffffc0000000000 R15: ffff88806e2358c0
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe98079d988 CR3: 0000000057388000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
batadv_iv_send_outstanding_bat_ogm_packet+0x6fe/0x810 net/batman-adv/bat_iv_ogm.c:1712
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242