INFO: task kworker/u4:12:21867 blocked for more than 143 seconds.
Not tainted 6.8.0-rc3-syzkaller-00005-g99bd3cb0d12e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:12 state:D stack:23256 pid:21867 tgid:21867 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-btrfs-1146)
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
io_schedule+0x8c/0x110 kernel/sched/core.c:9023
folio_wait_bit_common+0x881/0x12b0 mm/filemap.c:1274
extent_write_cache_pages fs/btrfs/extent_io.c:2126 [inline]
extent_writepages+0xac2/0x2580 fs/btrfs/extent_io.c:2274
do_writepages+0x3ac/0x680 mm/page-writeback.c:2553
__writeback_single_inode+0x155/0xfd0 fs/fs-writeback.c:1625
writeback_sb_inodes+0x8e3/0x1220 fs/fs-writeback.c:1916
__writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:1987
wb_writeback+0x461/0xc80 fs/fs-writeback.c:2094
wb_check_background_flush fs/fs-writeback.c:2164 [inline]
wb_do_writeback fs/fs-writeback.c:2252 [inline]
wb_workfn+0xc33/0xfb0 fs/fs-writeback.c:2279
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x915/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2f1/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
INFO: task syz-executor.3:22867 blocked for more than 145 seconds.
Not tainted 6.8.0-rc3-syzkaller-00005-g99bd3cb0d12e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23576 pid:22867 tgid:22866 ppid:5119 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1ae/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:802 [inline]
process_measurement+0x44d/0x21d0 security/integrity/ima/ima_main.c:248
ima_file_mmap+0x13c/0x2b0 security/integrity/ima/ima_main.c:442
vm_mmap_pgoff+0x148/0x420 mm/util.c:552
ksys_mmap_pgoff+0x503/0x6e0 mm/mmap.c:1425
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6d7367dda9
RSP: 002b:00007f6d744360c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f6d737abf80 RCX: 00007f6d7367dda9
RDX: 00000000027fffff RSI: 0000000000600000 RDI: 0000000020000000
RBP: 00007f6d736ca47a R08: 0000000000000005 R09: 0000000000000000
R10: 0000000004002011 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6d737abf80 R15: 00007ffcd3731c88
INFO: task syz-executor.3:22906 blocked for more than 145 seconds.
Not tainted 6.8.0-rc3-syzkaller-00005-g99bd3cb0d12e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23288 pid:22906 tgid:22866 ppid:5119 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
wait_extent_bit fs/btrfs/extent-io-tree.c:822 [inline]
lock_extent+0x69d/0x860 fs/btrfs/extent-io-tree.c:1868
btrfs_page_mkwrite+0x743/0x10c0 fs/btrfs/inode.c:8180
do_page_mkwrite+0x19d/0x480 mm/memory.c:2966
wp_page_shared mm/memory.c:3353 [inline]
do_wp_page+0x20e3/0x4c90 mm/memory.c:3493
handle_pte_fault mm/memory.c:5160 [inline]
__handle_mm_fault+0x26ad/0x72d0 mm/memory.c:5285
handle_mm_fault+0x3c1/0x8a0 mm/memory.c:5450
do_user_addr_fault arch/x86/mm/fault.c:1415 [inline]
handle_page_fault arch/x86/mm/fault.c:1507 [inline]
exc_page_fault+0x2ad/0x870 arch/x86/mm/fault.c:1563
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 e9 f9 df 0e 00 66 0f 1f 84 00 00 00 00 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:ffffc90014ca7390 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000020001618 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc90014ca7440 RDI: 00000000200015e0
RBP: ffffc90014ca74f0 R08: ffffc90014ca7477 R09: 1ffff92002994e8e
R10: dffffc0000000000 R11: fffff52002994e8f R12: 0000000000000038
R13: ffffc90014ca7440 R14: 00000000200015e0 R15: ffffc90014ca7440
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+0x86/0xb0 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 fs/btrfs/extent_io.c:2521 [inline]
fiemap_process_hole+0x5d2/0xb00 fs/btrfs/extent_io.c:2740
extent_fiemap+0xeae/0x1fe0
btrfs_fiemap+0x178/0x1f0 fs/btrfs/inode.c:7848
ioctl_fiemap fs/ioctl.c:220 [inline]
do_vfs_ioctl+0x1a04/0x2b60 fs/ioctl.c:811
__do_sys_ioctl fs/ioctl.c:869 [inline]
__se_sys_ioctl+0x81/0x170 fs/ioctl.c:857
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6d7367dda9
RSP: 002b:00007f6d744150c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6d737ac050 RCX: 00007f6d7367dda9
RDX: 00000000200015c0 RSI: 00000000c020660b RDI: 0000000000000004
RBP: 00007f6d736ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6d737ac050 R15: 00007ffcd3731c88
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4830:
#0: ffff88802fa9a0a0 (&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
5 locks held by syz-executor.4/5121:
3 locks held by kworker/u4:3/23848:
#0: ffff8880b953c958 (
&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9528988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffff8880202ca0d8 (&lo->lo_work_lock){..-.}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:376 [inline]
#2: ffff8880202ca0d8 (&lo->lo_work_lock){..-.}-{2:2}, at: loop_process_work+0x1994/0x1e60 drivers/block/loop.c:1947
3 locks held by kworker/u4:12/21867:
#0: ffff8880182bdd38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff8880182bdd38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc90016a1fd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc90016a1fd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffff88803fe6e0e0 (&type->s_umount_key#48){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:566
1 lock held by syz-executor.3/22867:
#0: ffff88807bb6b1b0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#0: ffff88807bb6b1b0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: process_measurement+0x44d/0x21d0 security/integrity/ima/ima_main.c:248
4 locks held by syz-executor.3/22906:
#0: ffff88807bb6b1b0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff88807bb6b1b0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xe0 fs/btrfs/inode.c:379
#1: ffff888060c00b20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#1: ffff888060c00b20 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5477 [inline]
#1: ffff888060c00b20 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2e0 mm/memory.c:5537
#2: ffff88803fe6e518 (sb_pagefaults#2){.+.+}-{0:0}, at: do_page_mkwrite+0x19d/0x480 mm/memory.c:2966
#3: ffff88807bb6b038 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x603/0x10c0 fs/btrfs/inode.c:8169
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc3-syzkaller-00005-g99bd3cb0d12e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2f1/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5107 Comm: syz-executor.2 Not tainted 6.8.0-rc3-syzkaller-00005-g99bd3cb0d12e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:__lock_acquire+0x126c/0x1fd0 kernel/locking/lockdep.c:5134
Code: 10 8b 18 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 20 94 c8 92 be 08 00 00 00 e8 ec 5a 84 00 48 0f a3 1d 04 6a 57 11 <73> 1d 48 69 c3 c8 00 00 00 48 8d 98 20 f3 96 92 48 ba 00 00 00 00
RSP: 0018:ffffc900044c7750 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81712a14
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92c89420
RBP: ce71a310754e9cd2 R08: ffffffff92c89427 R09: 1ffffffff2591284
R10: dffffc0000000000 R11: fffffbfff2591285 R12: ffff88801ab81dc0
R13: ffff88801ab81dc0 R14: 0000000000000000 R15: ffff88801ab81dc0
FS: 000055555675f480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe8edbff000 CR3: 0000000060b7a000 CR4: 0000000000350ef0
Call Trace:
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
debug_object_activate+0x16d/0x510 lib/debugobjects.c:708
debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline]
debug_activate kernel/time/hrtimer.c:477 [inline]
enqueue_hrtimer+0x30/0x320 kernel/time/hrtimer.c:1087
__hrtimer_start_range_ns kernel/time/hrtimer.c:1261 [inline]
hrtimer_start_range_ns+0xaa0/0xc60 kernel/time/hrtimer.c:1301
hrtimer_start_expires include/linux/hrtimer.h:392 [inline]
hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1968 [inline]
do_nanosleep+0x157/0x600 kernel/time/hrtimer.c:2044
hrtimer_nanosleep+0x226/0x470 kernel/time/hrtimer.c:2100
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline]
__se_sys_clock_nanosleep+0x32c/0x3c0 kernel/time/posix-timers.c:1373
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fe8f66a91b5
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 b9 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f ba ff ff 48 8b 04 24 48 83 c4 28 f7 d8
RSP: 002b:00007ffcfcd31ee0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 0000000000001386 RCX: 00007fe8f66a91b5
RDX: 00007ffcfcd31f20 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffcfcd31fac R08: 0000000000000000 R09: 00007ffcfcdbc0b0
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 00000000002c0053 R14: 00000000002c0053 R15: 0000000000000000