INFO: task syz-executor.2:5539 blocked for more than 143 seconds.
Not tainted 6.5.0-rc7-syzkaller-00144-g4942fed84b98 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24808 pid:5539 ppid:5374 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
io_schedule+0x8c/0x100 kernel/sched/core.c:9028
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1304
folio_lock include/linux/pagemap.h:959 [inline]
extent_write_cache_pages fs/btrfs/extent_io.c:2163 [inline]
extent_writepages+0xcd1/0x2ec0 fs/btrfs/extent_io.c:2316
do_writepages+0x3a6/0x670 mm/page-writeback.c:2553
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:393
__filemap_fdatawrite_range mm/filemap.c:426 [inline]
__filemap_fdatawrite mm/filemap.c:432 [inline]
filemap_flush+0x11e/0x170 mm/filemap.c:459
btrfs_release_file+0x117/0x130 fs/btrfs/file.c:1709
__fput+0x3f8/0x950 fs/file_table.c:384
task_work_run+0x24a/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa3afe7ba1a
RSP: 002b:00007fff96fa42e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007fa3afe7ba1a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fa3aff9d980 R08: 0000001b33560000 R09: 00007fff96fb40b0
R10: 00007fff96fb4080 R11: 0000000000000293 R12: 0000000000016a1b
R13: ffffffffffffffff R14: 00007fa3afa00000 R15: 0000000000015ff1
INFO: task syz-executor.2:5540 blocked for more than 144 seconds.
Not tainted 6.5.0-rc7-syzkaller-00144-g4942fed84b98 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:22544 pid:5540 ppid:5374 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
io_schedule+0x8c/0x100 kernel/sched/core.c:9028
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1304
btrfs_page_mkwrite+0x4a4/0xd10 fs/btrfs/inode.c:8288
do_page_mkwrite+0x1a4/0x600 mm/memory.c:2942
wp_page_shared mm/memory.c:3294 [inline]
do_wp_page+0x559/0x3a70 mm/memory.c:3376
handle_pte_fault mm/memory.c:4955 [inline]
__handle_mm_fault mm/memory.c:5079 [inline]
handle_mm_fault+0x1c58/0x5410 mm/memory.c:5233
do_user_addr_fault arch/x86/mm/fault.c:1392 [inline]
handle_page_fault arch/x86/mm/fault.c:1486 [inline]
exc_page_fault+0x266/0x7c0 arch/x86/mm/fault.c:1542
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:rep_movs_alternative+0x33/0xb0 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:ffffc90007067330 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000020000158 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc900070673e0 RDI: 0000000020000120
RBP: ffffc90007067498 R08: ffffc90007067417 R09: 1ffff92000e0ce82
R10: dffffc0000000000 R11: fffff52000e0ce83 R12: 0000000000000038
R13: ffffc900070673e0 R14: 0000000020000120 R15: ffffc900070673e0
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:144
emit_fiemap_extent+0x256/0x410 fs/btrfs/extent_io.c:2562
fiemap_process_hole+0xa27/0xaf0 fs/btrfs/extent_io.c:2820
extent_fiemap+0xeae/0x1fe0
btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7970
ioctl_fiemap fs/ioctl.c:219 [inline]
do_vfs_ioctl+0x19db/0x2b30 fs/ioctl.c:810
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x81/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa3afe7cb29
RSP: 002b:00007fa3b0af40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa3aff9bf80 RCX: 00007fa3afe7cb29
RDX: 0000000020000100 RSI: 00000000c020660b RDI: 0000000000000005
RBP: 00007fa3afec847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fa3aff9bf80 R15: 00007fff96fa4218
INFO: task syz-executor.2:5588 blocked for more than 145 seconds.
Not tainted 6.5.0-rc7-syzkaller-00144-g4942fed84b98 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:22712 pid:5588 ppid:5374 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
wait_on_state fs/btrfs/extent-io-tree.c:719 [inline]
wait_extent_bit+0x50c/0x670 fs/btrfs/extent-io-tree.c:763
lock_extent+0x1c0/0x270 fs/btrfs/extent-io-tree.c:1755
find_lock_delalloc_range+0x4b5/0x980 fs/btrfs/extent_io.c:443
writepage_delalloc+0x1bd/0x490 fs/btrfs/extent_io.c:1258
__extent_writepage fs/btrfs/extent_io.c:1515 [inline]
extent_write_cache_pages fs/btrfs/extent_io.c:2189 [inline]
extent_writepages+0x14ef/0x2ec0 fs/btrfs/extent_io.c:2316
do_writepages+0x3a6/0x670 mm/page-writeback.c:2553
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:393
__filemap_fdatawrite_range mm/filemap.c:426 [inline]
filemap_fdatawrite_range+0x16e/0x1e0 mm/filemap.c:444
btrfs_fdatawrite_range fs/btrfs/file.c:3850 [inline]
btrfs_direct_write fs/btrfs/file.c:1600 [inline]
btrfs_do_write_iter+0xd35/0x1020 fs/btrfs/file.c:1667
call_write_iter include/linux/fs.h:1877 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x782/0xaf0 fs/read_write.c:584
ksys_write+0x1a0/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa3afe7cb29
RSP: 002b:00007fa3a7dfe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa3aff9c050 RCX: 00007fa3afe7cb29
RDX: 0000000000000128 RSI: 0000000020004400 RDI: 0000000000000006
RBP: 00007fa3afec847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fa3aff9c050 R15: 00007fff96fa4218
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8d3295f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8d3299b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8d329420 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/u4:4/57:
#0: ffff88801369e938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc90001587d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffff88807accc0e0 (&type->s_umount_key#51){++++}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:413
2 locks held by kworker/u4:6/2866:
1 lock held by udevd/4469:
2 locks held by getty/4768:
#0: ffff88802d51a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2187
4 locks held by syz-executor.2/5540:
#0: ffff888063ab9830 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:781 [inline]
#0: ffff888063ab9830 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:369
#1: ffff888020b794a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:167 [inline]
#1: ffff888020b794a0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5260 [inline]
#1: ffff888020b794a0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5320
#2: ffff88807accc508 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x1a4/0x600 mm/memory.c:2942
#3: ffff888063ab96b8 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8287
2 locks held by syz-executor.2/5588:
#0: ffff88807bdfa0c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2b0/0x340 fs/file.c:1062
#1: ffff88807accc410 (sb_writers#14){.+.+}-{0:0}, at: vfs_write+0x216/0xaf0 fs/read_write.c:580
1 lock held by syz-executor.4/6537:
1 lock held by syz-executor.5/6536:
1 lock held by syz-executor.1/6541:
1 lock held by syz-executor.2/6544:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc7-syzkaller-00144-g4942fed84b98 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
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+0x187/0x300 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+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6531 Comm: syz-executor.3 Not tainted 6.5.0-rc7-syzkaller-00144-g4942fed84b98 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:get_page_owner mm/page_owner.c:107 [inline]
RIP: 0010:__reset_page_owner+0xc1/0x190 mm/page_owner.c:152
Code: 9f 00 00 00 e8 00 ad 9d ff 41 83 ee 01 0f 82 b5 00 00 00 e8 f1 ac 9d ff 48 89 df be 08 00 00 00 e8 34 85 f6 ff 48 0f ba 33 01 <48> 8b 05 28 64 55 0b 48 8d 2c 03 48 8d 7c 03 0c 48 89 f8 48 c1 e8
RSP: 0018:ffffc90004a775b8 EFLAGS: 00000257
RAX: ffffffff81ee0b01 RBX: ffff888015c3cf18 RCX: ffffffff81ee0b4c
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff888015c3cf18
RBP: 0000000000000000 R08: ffff888015c3cf1f R09: 1ffff11002b879e3
R10: dffffc0000000000 R11: ffffed1002b879e4 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff240e7bc
FS: 00007fb70515e6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f00fdaa7000 CR3: 000000001f7bf000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1161 [inline]
free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2348
free_unref_page_list+0x596/0x830 mm/page_alloc.c:2489
release_pages+0x2193/0x2470 mm/swap.c:1042
__folio_batch_release+0x84/0x100 mm/swap.c:1062
folio_batch_release include/linux/pagevec.h:83 [inline]
shmem_undo_range+0x6af/0x1ba0 mm/shmem.c:954
shmem_truncate_range mm/shmem.c:1049 [inline]
shmem_evict_inode+0x258/0x9f0 mm/shmem.c:1164
evict+0x2a4/0x620 fs/inode.c:664
__dentry_kill+0x436/0x650 fs/dcache.c:607
dentry_kill+0xbb/0x290
dput+0x1f3/0x420 fs/dcache.c:913
__fput+0x628/0x950 fs/file_table.c:392
task_work_run+0x24a/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb70447c88b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fb70515de90 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: ffffffffffffffff RCX: 00007fb70447c88b
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004
RBP: 0000000000000011 R08: 00007fb70515df80 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007fb70515df40 R14: 00000000000050ef R15: 0000000020001180