INFO: task syz-executor.3:8945 blocked for more than 143 seconds.
Not tainted 6.6.0-rc4-syzkaller-00229-g82714078aee4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25000 pid:8945 ppid:5067 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
io_schedule+0x8c/0x100 kernel/sched/core.c:9026
folio_wait_bit_common+0x881/0x12a0 mm/filemap.c:1301
btrfs_page_mkwrite+0x4a4/0xd10 fs/btrfs/inode.c:8133
do_page_mkwrite+0x197/0x470 mm/memory.c:2931
wp_page_shared mm/memory.c:3291 [inline]
do_wp_page+0xf87/0x4190 mm/memory.c:3376
handle_pte_fault mm/memory.c:4994 [inline]
__handle_mm_fault mm/memory.c:5119 [inline]
handle_mm_fault+0x1b45/0x62b0 mm/memory.c:5284
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: 0033:0x7fb01f62b321
RSP: 002b:00007ffea1a68610 EFLAGS: 00010246
RAX: 0000000020000000 RBX: 0000000000000004 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000555555852360
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffea1b56080 R11: 000000000005c918 R12: 00007fb01f206980
R13: fffffffffffffffe R14: 00007fb01f200000 R15: 00007fb01f206988
INFO: task syz-executor.3:8946 blocked for more than 144 seconds.
Not tainted 6.6.0-rc4-syzkaller-00229-g82714078aee4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23720 pid:8946 ppid:5067 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
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
btrfs_page_mkwrite+0x5bd/0xd10 fs/btrfs/inode.c:8143
do_page_mkwrite+0x197/0x470 mm/memory.c:2931
wp_page_shared mm/memory.c:3291 [inline]
do_wp_page+0xf87/0x4190 mm/memory.c:3376
handle_pte_fault mm/memory.c:4994 [inline]
__handle_mm_fault mm/memory.c:5119 [inline]
handle_mm_fault+0x1b45/0x62b0 mm/memory.c:5284
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:ffffc90005ad7550 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000020000098 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc90005ad7600 RDI: 0000000020000060
RBP: ffffc90005ad76b0 R08: ffffc90005ad7637 R09: 1ffff92000b5aec6
R10: dffffc0000000000 R11: fffff52000b5aec7 R12: 0000000000000038
R13: ffffc90005ad7600 R14: 0000000020000060 R15: ffffc90005ad7600
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_last_fiemap_cache fs/btrfs/extent_io.c:2506 [inline]
extent_fiemap+0x1b9c/0x1fe0 fs/btrfs/extent_io.c:3033
btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7815
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:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb01f67cae9
RSP: 002b:00007fb02049a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb01f79bf80 RCX: 00007fb01f67cae9
RDX: 0000000020000040 RSI: 00000000c020660b RDI: 0000000000000009
RBP: 00007fb01f6c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb01f79bf80 R15: 00007ffea1a68568
Showing all locks held in the system:
3 locks held by kworker/0:0/8:
1 lock held by khungtaskd/29:
#0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
4 locks held by kworker/u4:7/1126:
2 locks held by udevd/4483:
#0: ffff8880b983c318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b9828808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:999
2 locks held by getty/4784:
#0: ffff88802a6ca0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2206
1 lock held by syz-executor.1/5065:
1 lock held by syz-executor.0/5063:
#0: ffff8880759520e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880759520e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880759520e0 (&type->s_umount_key#54){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:513
4 locks held by kworker/u4:4/21190:
#0: ffff8880b993c318 (&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:999
#2: ffffffff8d32c480 (rcu_read_lock_bh){....}-{1:2}, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
#2: ffffffff8d32c480 (rcu_read_lock_bh){....}-{1:2}, at: rcu_read_lock_bh include/linux/rcupdate.h:801 [inline]
#2: ffffffff8d32c480 (rcu_read_lock_bh){....}-{1:2}, at: mod_peer_timer+0x1f/0x250 drivers/net/wireguard/timers.c:34
#3: ffff8880b99296d8 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:999
3 locks held by syz-executor.3/8945:
#0: ffff88801f0b8b20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#0: ffff88801f0b8b20 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5311 [inline]
#0: ffff88801f0b8b20 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5371
#1: ffff8880209d6508 (sb_pagefaults#3){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2931
#2: ffff88803bc82008 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8132
4 locks held by syz-executor.3/8946:
#0: ffff88803bc82180 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff88803bc82180 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:369
#1: ffff88801f0b8b20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#1: ffff88801f0b8b20 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5311 [inline]
#1: ffff88801f0b8b20 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5371
#2: ffff8880209d6508 (sb_pagefaults#3){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2931
#3: ffff88803bc82008 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8132
1 lock held by syz-executor.3/10239:
#0: ffffffff8d331db8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#0: ffffffff8d331db8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992
1 lock held by syz-executor.5/10246:
#0: ffff8880283080e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880283080e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880283080e0 (&type->s_umount_key#54){++++}-{3:3}, at: mount_bdev+0x1eb/0x300 fs/super.c:1627
2 locks held by syz-executor.2/10256:
2 locks held by syz-executor.1/10258:
#0: ffff8880b983c318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b9828808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:999
2 locks held by syz-executor.1/10261:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc4-syzkaller-00229-g82714078aee4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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:304
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10256 Comm: syz-executor.2 Not tainted 6.6.0-rc4-syzkaller-00229-g82714078aee4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:mtree_range_walk+0xb3/0x7e0 lib/maple_tree.c:2797
Code: 38 48 8d 59 28 48 89 d8 48 c1 e8 03 48 89 44 24 58 42 80 3c 28 00 74 0d 48 89 df e8 d7 f7 23 f7 48 8b 4c 24 08 48 89 5c 24 68 <48> 8b 41 28 48 89 44 24 20 48 8d 41 08 48 89 44 24 48 48 c1 e8 03
RSP: 0000:ffffc90004c3fcd8 EFLAGS: 00000246
RAX: 1ffff92000987fcd RBX: ffffc90004c3fe68 RCX: ffffc90004c3fe40
RDX: ffffc9000a2f2000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: dffffc0000000000 R08: 0000000000000007 R09: ffffffff8ac3f1d5
R10: 0000000000000002 R11: ffff88801f423b80 R12: ffff8880252ca01c
R13: dffffc0000000000 R14: ffffc90004c3fe40 R15: 0000000000000000
FS: 00007fd7404746c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd736fa1000 CR3: 00000000208da000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mas_state_walk lib/maple_tree.c:3712 [inline]
mas_walk+0x9f/0x200 lib/maple_tree.c:4888
lock_vma_under_rcu+0x22e/0x6f0 mm/memory.c:5436
do_user_addr_fault arch/x86/mm/fault.c:1356 [inline]
handle_page_fault arch/x86/mm/fault.c:1505 [inline]
exc_page_fault+0x184/0x860 arch/x86/mm/fault.c:1561
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7fd73f6286e6
Code: f0 72 6e 48 63 cd 48 01 c1 49 39 4f 08 72 4c 8d 4d ff 85 ed 74 33 66 0f 1f 44 00 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 <47> 0f b6 0c 08 45 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01
RSP: 002b:00007fd740473520 EFLAGS: 00010206
RAX: 00000000011a2001 RBX: 00007fd7404735c0 RCX: 00000000000000f4
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007fd740473660
RBP: 0000000000000102 R08: 00007fd735dff000 R09: 00000000011a2000
R10: 0000000000000000 R11: 00007fd7404735d0 R12: 0000000000000001
R13: 00007fd73f6ea4a0 R14: 0000000000000000 R15: 00007fd740473660