INFO: task syz-executor.0:19507 blocked for more than 143 seconds.
Not tainted 6.1.0-syzkaller-03225-g764822972d64 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:19944 pid:19507 ppid:5442 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5233 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6545
schedule+0xcb/0x190 kernel/sched/core.c:6621
io_schedule+0x83/0x100 kernel/sched/core.c:8801
folio_wait_bit_common+0x83a/0x12a0 mm/filemap.c:1296
set_page_dirty_lock+0x12/0x30 mm/page-writeback.c:2770
bio_set_pages_dirty+0x200/0x2e0 block/bio.c:1429
iomap_dio_bio_iter+0xd82/0x1680 fs/iomap/direct-io.c:348
__iomap_dio_rw+0x1234/0x20d0 fs/iomap/direct-io.c:602
iomap_dio_rw+0x42/0xa0 fs/iomap/direct-io.c:690
btrfs_dio_read+0x9c/0xe0 fs/btrfs/inode.c:8168
btrfs_direct_read fs/btrfs/file.c:3765 [inline]
btrfs_file_read_iter+0x399/0x6a0 fs/btrfs/file.c:3804
do_iter_read+0x6e3/0xc10 fs/read_write.c:796
vfs_readv fs/read_write.c:916 [inline]
do_preadv+0x1f4/0x330 fs/read_write.c:1008
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6b7768c0d9
RSP: 002b:00007f6b761fe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000147
RAX: ffffffffffffffda RBX: 00007f6b777abf80 RCX: 00007f6b7768c0d9
RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000005
RBP: 00007f6b776e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe114f092f R14: 00007f6b761fe300 R15: 0000000000022000
INFO: task syz-executor.0:19551 blocked for more than 144 seconds.
Not tainted 6.1.0-syzkaller-03225-g764822972d64 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:21304 pid:19551 ppid:5442 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5233 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6545
schedule+0xcb/0x190 kernel/sched/core.c:6621
wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
wait_extent_bit+0x577/0x6f0 fs/btrfs/extent-io-tree.c:751
lock_extent+0x1c2/0x280 fs/btrfs/extent-io-tree.c:1742
btrfs_page_mkwrite+0x533/0xc80 fs/btrfs/inode.c:8537
do_page_mkwrite+0x19e/0x5e0 mm/memory.c:2977
wp_page_shared+0x15e/0x380 mm/memory.c:3323
handle_pte_fault mm/memory.c:4972 [inline]
__handle_mm_fault mm/memory.c:5096 [inline]
handle_mm_fault+0x1e72/0x3630 mm/memory.c:5217
do_user_addr_fault+0x69b/0xcb0 arch/x86/mm/fault.c:1428
handle_page_fault arch/x86/mm/fault.c:1519 [inline]
exc_page_fault+0x7a/0x110 arch/x86/mm/fault.c:1575
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:copy_user_enhanced_fast_string+0xa/0x40 arch/x86/lib/copy_user_64.S:166
Code: ff c9 75 f2 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 8d 0c ca 89 ca eb 20 0f 01 cb 83 fa 40 72 38 89 d1 a4 31 c0 0f 01 ca c3 89 ca eb 0a 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc9000367fe48 EFLAGS: 00050206
RAX: ffffffff843a4501 RBX: 00007fffffffec00 RCX: 0000000000000400
RDX: 0000000000000400 RSI: ffff888021d8f000 RDI: 0000000020000480
RBP: ffff88802b730598 R08: dffffc0000000000 R09: ffffed10043b1e80
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000400
R13: ffff888021d8f000 R14: 0000000020000480 R15: ffff888021d8f000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
_copy_to_user+0xe9/0x130 lib/usercopy.c:34
copy_to_user include/linux/uaccess.h:169 [inline]
btrfs_ioctl_balance+0x59d/0x740 fs/btrfs/ioctl.c:3595
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6b7768c0d9
RSP: 002b:00007f6b6eddd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6b777ac050 RCX: 00007f6b7768c0d9
RDX: 0000000020000480 RSI: 00000000c4009420 RDI: 0000000000000007
RBP: 00007f6b776e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe114f092f R14: 00007f6b6eddd300 R15: 0000000000022000
INFO: task syz-executor.0:19552 blocked for more than 145 seconds.
Not tainted 6.1.0-syzkaller-03225-g764822972d64 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:25480 pid:19552 ppid:5442 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5233 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6545
schedule+0xcb/0x190 kernel/sched/core.c:6621
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6680
__mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
btrfs_try_lock_balance fs/btrfs/ioctl.c:3475 [inline]
btrfs_ioctl_balance+0x33b/0x740 fs/btrfs/ioctl.c:3540
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6b7768c0d9
RSP: 002b:00007f6b6edbc168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6b777ac120 RCX: 00007f6b7768c0d9
RDX: 00000000200014c0 RSI: 00000000c4009420 RDI: 0000000000000004
RBP: 00007f6b776e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe114f092f R14: 00007f6b6edbc300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d328390 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d328b90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d3281c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/u4:3/46:
#0: ffff888018236138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90000b77d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
#2: ffff888031e220e0 (&type->s_umount_key#54){++++}-{3:3}, at: trylock_super+0x1b/0xf0 fs/super.c:415
2 locks held by getty/3315:
#0: ffff888147761098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
2 locks held by kworker/u4:8/14861:
1 lock held by syz-executor.0/19507:
#0: ffff8880494d52e0 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff8880494d52e0 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: btrfs_inode_lock+0x5c/0xd0 fs/btrfs/inode.c:184
5 locks held by syz-executor.0/19551:
#0: ffff888031e22460 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 fs/namespace.c:552
#1: ffff888065aa1440 (&fs_info->balance_mutex){+.+.}-{3:3}, at: btrfs_balance+0xc0c/0x1150 fs/btrfs/volumes.c:4354
#2: ffff88801dd049d8 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#2: ffff88801dd049d8 (&mm->mmap_lock#2){++++}-{3:3}, at: do_user_addr_fault+0x2e2/0xcb0 arch/x86/mm/fault.c:1369
#3: ffff888031e22558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x19e/0x5e0 mm/memory.c:2977
#4: ffff8880494d5168 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x417/0xc80 fs/btrfs/inode.c:8526
2 locks held by syz-executor.0/19552:
#0: ffff888031e22460 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 fs/namespace.c:552
#1: ffff888065aa1440 (&fs_info->balance_mutex){+.+.}-{3:3}, at: btrfs_try_lock_balance fs/btrfs/ioctl.c:3475 [inline]
#1: ffff888065aa1440 (&fs_info->balance_mutex){+.+.}-{3:3}, at: btrfs_ioctl_balance+0x33b/0x740 fs/btrfs/ioctl.c:3540
2 locks held by syz-executor.2/21171:
2 locks held by syz-executor.3/21182:
#0: ffff8880b983a1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
#1: ffff8880b9827788 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x611/0x9a0 kernel/sched/psi.c:976
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-syzkaller-03225-g764822972d64 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcf5/0xd40 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 21171 Comm: syz-executor.2 Not tainted 6.1.0-syzkaller-03225-g764822972d64 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:match_held_lock+0x2/0xb0 kernel/locking/lockdep.c:5113
Code: ff ff 31 db 48 c7 c7 00 b7 ed 8a 48 c7 c6 40 b7 ed 8a 31 c0 e8 df 55 be f6 0f 0b e9 38 ff ff ff e8 c3 fa ff ff 0f 1f 00 55 53 01 00 00 00 48 39 77 10 74 67 48 89 fb 81 7f 20 00 00 10 00 72
RSP: 0018:ffffc9000af7f5f8 EFLAGS: 00000087
RAX: 0000000000000003 RBX: 0000000000000002 RCX: 0000000080000000
RDX: ffff888019a68000 RSI: ffffffff8d3281c0 RDI: ffff888019a68aa0
RBP: ffff888019a68aa0 R08: ffffffff84267397 R09: fffffbfff20f4a29
R10: fffffbfff20f4a29 R11: 1ffffffff20f4a28 R12: 0000000000000246
R13: ffff888019a68000 R14: 00000000ffffffff R15: ffffffff8d3281c0
FS: 00007fa3c4e03700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c001ebae3b CR3: 00000000787bb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_is_held kernel/locking/lockdep.c:5409 [inline]
lock_is_held_type+0xa1/0x180 kernel/locking/lockdep.c:5711
task_css include/linux/cgroup.h:437 [inline]
blkcg_css+0xf1/0x1b0 block/blk-cgroup.c:76
blk_cgroup_congested+0x80/0x1c0 block/blk-cgroup.c:1976
__cgroup_throttle_swaprate+0x6d/0x1f0 mm/swapfile.c:3638
cgroup_throttle_swaprate include/linux/swap.h:657 [inline]
folio_throttle_swaprate include/linux/swap.h:666 [inline]
shmem_add_to_page_cache+0xb0a/0x2020 mm/shmem.c:719
shmem_get_folio_gfp+0xfe4/0x36e0 mm/shmem.c:1954
shmem_get_folio mm/shmem.c:2055 [inline]
shmem_write_begin+0x133/0x480 mm/shmem.c:2542
generic_perform_write+0x2e4/0x5e0 mm/filemap.c:3753
__generic_file_write_iter+0x176/0x400 mm/filemap.c:3881
generic_file_write_iter+0xab/0x310 mm/filemap.c:3913
call_write_iter include/linux/fs.h:2186 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7dc/0xc50 fs/read_write.c:584
ksys_write+0x177/0x2a0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa3c403de5f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48
RSP: 002b:00007fa3c4e02f10 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa3c403de5f
RDX: 0000000001000000 RSI: 00007fa3ba7ff000 RDI: 0000000000000003
RBP: 00007fa3ba7ff000 R08: 0000000000000000 R09: 00000000000055a2
R10: 0000000001000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007fa3c4e02fdc R14: 00007fa3c4e02fe0 R15: 0000000020005682