INFO: task syz-executor.1:9715 blocked for more than 143 seconds.
Not tainted 6.3.0-rc6-syzkaller-00016-g0d3eb744aed4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:23768 pid:9715 ppid:5108 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
schedule+0xc3/0x180 kernel/sched/core.c:6701
wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
wait_extent_bit+0x50c/0x670 fs/btrfs/extent-io-tree.c:751
lock_extent+0x1ce/0x280 fs/btrfs/extent-io-tree.c:1742
btrfs_page_mkwrite+0x554/0xc90 fs/btrfs/inode.c:8163
do_page_mkwrite+0x1a1/0x600 mm/memory.c:2925
wp_page_shared mm/memory.c:3274 [inline]
do_wp_page+0x501/0x3620 mm/memory.c:3356
handle_pte_fault mm/memory.c:4941 [inline]
__handle_mm_fault mm/memory.c:5065 [inline]
handle_mm_fault+0x23a0/0x51c0 mm/memory.c:5211
do_user_addr_fault arch/x86/mm/fault.c:1407 [inline]
handle_page_fault arch/x86/mm/fault.c:1498 [inline]
exc_page_fault+0x5b1/0x7c0 arch/x86/mm/fault.c:1554
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:copy_user_short_string+0xd/0x40 arch/x86/lib/copy_user_64.S:233
Code: 74 0a 89 d1 f3 a4 89 c8 0f 01 ca c3 89 d0 0f 01 ca c3 01 ca eb e7 0f 1f 80 00 00 00 00 89 d1 83 e2 07 c1 e9 03 74 12 4c 8b 06 <4c> 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 89 d1 8a
RSP: 0018:ffffc90012817550 EFLAGS: 00050202
RAX: ffffffff84302d01 RBX: 00007fffffffefc8 RCX: 0000000000000007
RDX: 0000000000000000 RSI: ffffc90012817600 RDI: 0000000020002aa0
RBP: ffffc900128176b0 R08: 0000000000000000 R09: fffff52002502ec7
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000038
R13: ffffc90012817600 R14: 0000000020002aa0 R15: ffffc90012817600
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+0xed/0x130 lib/usercopy.c:41
copy_to_user include/linux/uaccess.h:169 [inline]
fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:144
emit_last_fiemap_cache fs/btrfs/extent_io.c:3036 [inline]
extent_fiemap+0x1bf9/0x2150 fs/btrfs/extent_io.c:3563
btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7835
ioctl_fiemap fs/ioctl.c:219 [inline]
do_vfs_ioctl+0x19ba/0x2b10 fs/ioctl.c:810
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x81/0x160 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: 0033:0x7f1061c8c169
RSP: 002b:00007f10629b6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1061dac120 RCX: 00007f1061c8c169
RDX: 0000000020002a80 RSI: 00000000c020660b RDI: 0000000000000005
RBP: 00007f1061ce7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeb8712d1f R14: 00007f10629b6300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf25570 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf25d70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8cf253a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/1:2/4391:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc90006467d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
#2: ffffffff8cf2a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#2: ffffffff8cf2a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:989
1 lock held by udevd/4429:
2 locks held by getty/4745:
#0: ffff888149dd6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
2 locks held by kworker/1:17/6608:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc90016897d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
4 locks held by syz-executor.1/9715:
#0: ffff888074476308 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
#0: ffff888074476308 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:169
#1: ffff888027079c98 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#1: ffff888027079c98 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1348 [inline]
#1: ffff888027079c98 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1498 [inline]
#1: ffff888027079c98 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x18e/0x7c0 arch/x86/mm/fault.c:1554
#2: ffff88802bd22558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x1a1/0x600 mm/memory.c:2925
#3: ffff888074476190 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x425/0xc90 fs/btrfs/inode.c:8152
2 locks held by syz-executor.1/11886:
1 lock held by syz-executor.4/11888:
1 lock held by syz-executor.2/11897:
#0: ffff8880b993be98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:539
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc6-syzkaller-00016-g0d3eb744aed4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
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:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11896 Comm: syz-executor.5 Not tainted 6.3.0-rc6-syzkaller-00016-g0d3eb744aed4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0033:0x7f4915c2923c
Code: 01 c2 49 3b 55 08 77 56 8d 55 ff 85 ed 74 35 0f 1f 80 00 00 00 00 48 39 c1 77 1c 49 8b 75 00 49 89 c1 49 29 c9 46 0f b6 0c 0e <45> 84 c9 74 08 44 88 0c 06 49 8b 45 10 48 83 c0 01 49 89 45 10 83
RSP: 002b:00007f4916a0e600 EFLAGS: 00000206
RAX: 00000000006f5d9a RBX: 00007f4916a0e660 RCX: 0000000000000001
RDX: 00000000000000f5 RSI: 00007f490c3ff000 RDI: 00007f4916a0e700
RBP: 0000000000000102 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 00007f4916a0e670 R12: 00007f4916a0e670
R13: 00007f4916a0e700 R14: 0000000000000001 R15: 0000000000000000
FS: 00007f4916a0f700 GS: 0000000000000000