INFO: task syz-executor.1:20451 blocked for more than 143 seconds.
Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:25112 pid:20451 tgid:20451 ppid:5096 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 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
btrfs_page_mkwrite+0x60d/0x10c0 fs/btrfs/inode.c:8170
do_page_mkwrite+0x19b/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+0x27e/0x770 mm/memory.c:5450
do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
handle_page_fault arch/x86/mm/fault.c:1507 [inline]
exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f8f13c5ee3c
RSP: 002b:00007ffe6fb4a1b8 EFLAGS: 00010206
RAX: 0000000020000040 RBX: 00007ffe6fb4a2c8 RCX: 00007f8f13800000
RDX: 0000000000000016 RSI: 00007f8f13806f38 RDI: 0000000020000040
RBP: 0000000000000032 R08: 00007f8f13c00000 R09: 00007ffe6fb6d0b0
R10: 00007ffe6fb6d080 R11: 000000000002b5dc R12: 00007f8f13806f18
R13: fffffffffffffffe R14: 00007f8f13800000 R15: 00007f8f13806f20
INFO: task syz-executor.1:20452 blocked for more than 143 seconds.
Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:23408 pid:20452 tgid:20451 ppid:5096 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 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_lock_and_flush_ordered_range+0xd3/0x220 fs/btrfs/ordered-data.c:1092
contiguous_readpages fs/btrfs/extent_io.c:1186 [inline]
extent_readahead+0x10c1/0x1470 fs/btrfs/extent_io.c:2292
read_pages+0x184/0x840 mm/readahead.c:160
page_cache_ra_unbounded+0x68e/0x7c0 mm/readahead.c:269
do_sync_mmap_readahead+0x444/0x850
filemap_fault+0x7c6/0x1680 mm/filemap.c:3245
__do_fault+0x135/0x460 mm/memory.c:4376
do_read_fault mm/memory.c:4738 [inline]
do_fault mm/memory.c:4868 [inline]
do_pte_missing mm/memory.c:3745 [inline]
handle_pte_fault mm/memory.c:5144 [inline]
__handle_mm_fault+0x49e6/0x72d0 mm/memory.c:5285
handle_mm_fault+0x27e/0x770 mm/memory.c:5450
faultin_page mm/gup.c:958 [inline]
__get_user_pages+0x6bd/0x1600 mm/gup.c:1241
populate_vma_page_range+0x2aa/0x380 mm/gup.c:1679
__mm_populate+0x279/0x460 mm/gup.c:1788
mm_populate include/linux/mm.h:3391 [inline]
vm_mmap_pgoff+0x304/0x420 mm/util.c:561
ksys_mmap_pgoff+0x503/0x6e0 mm/mmap.c:1425
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f8f13c7dda9
RSP: 002b:00007f8f14a9a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f8f13dabf80 RCX: 00007f8f13c7dda9
RDX: 00000000027fffff RSI: 0000000000600000 RDI: 0000000020000000
RBP: 00007f8f13cca47a R08: 0000000000000005 R09: 0000000000000000
R10: 0000000004002011 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f8f13dabf80 R15: 00007ffe6fb4a0d8
INFO: task syz-executor.1:20486 blocked for more than 144 seconds.
Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:21456 pid:20486 tgid:20451 ppid:5096 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 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]
btrfs_inode_lock+0x4d/0xe0 fs/btrfs/inode.c:387
btrfs_sync_file+0x538/0x1310 fs/btrfs/file.c:1824
generic_write_sync include/linux/fs.h:2735 [inline]
btrfs_do_write_iter+0xbc5/0x1190 fs/btrfs/file.c:1697
call_write_iter include/linux/fs.h:2085 [inline]
iter_file_splice_write+0xbd6/0x14e0 fs/splice.c:743
do_splice_from fs/splice.c:941 [inline]
direct_splice_actor+0x11e/0x220 fs/splice.c:1164
splice_direct_to_actor+0x58d/0xc80 fs/splice.c:1108
do_splice_direct_actor fs/splice.c:1207 [inline]
do_splice_direct+0x28c/0x3e0 fs/splice.c:1233
do_sendfile+0x56d/0xdc0 fs/read_write.c:1295
__do_sys_sendfile64 fs/read_write.c:1362 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1348
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f8f13c7dda9
RSP: 002b:00007f8f14a790c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f8f13dac050 RCX: 00007f8f13c7dda9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000007
RBP: 00007f8f13cca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8f13dac050 R15: 00007ffe6fb4a0d8
INFO: task syz-executor.1:20487 blocked for more than 144 seconds.
Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:23160 pid:20487 tgid:20451 ppid:5096 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 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+0x19b/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+0x27e/0x770 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 c3 cc cc cc cc 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:ffffc900150f74b0 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000020000218 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc900150f7560 RDI: 00000000200001e0
RBP: ffffc900150f7618 R08: ffffc900150f7597 R09: 1ffff92002a1eeb2
R10: dffffc0000000000 R11: fffff52002a1eeb3 R12: 0000000000000038
R13: ffffc900150f7560 R14: 00000000200001e0 R15: ffffc900150f7560
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+0x258/0x410 fs/btrfs/extent_io.c:2521
extent_fiemap+0xeee/0x1fe0 fs/btrfs/extent_io.c:3011
btrfs_fiemap+0x178/0x1f0 fs/btrfs/inode.c:7848
ioctl_fiemap fs/ioctl.c:220 [inline]
do_vfs_ioctl+0x1a02/0x2b60 fs/ioctl.c:811
__do_sys_ioctl fs/ioctl.c:869 [inline]
__se_sys_ioctl+0x81/0x170 fs/ioctl.c:857
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f8f13c7dda9
RSP: 002b:00007f8f14a580c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8f13dac120 RCX: 00007f8f13c7dda9
RDX: 00000000200001c0 RSI: 00000000c020660b RDI: 0000000000000007
RBP: 00007f8f13cca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8f13dac120 R15: 00007ffe6fb4a0d8
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 kworker/u4:9/2508:
#0: ffff8880b953c918 (&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+0x3a7/0x770 kernel/sched/psi.c:976
2 locks held by getty/4812:
#0: ffff88802b3640a0 (&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+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by syz-executor.1/20451:
#0: ffff8880113f6158 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:663 [inline]
#0: ffff8880113f6158 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f9/0x730 mm/memory.c:5606
#1: ffff88802a53e518 (sb_pagefaults#3){.+.+}-{0:0}, at: do_page_mkwrite+0x19b/0x480 mm/memory.c:2966
#2: ffff88803286a750 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x603/0x10c0 fs/btrfs/inode.c:8169
1 lock held by syz-executor.1/20452:
#0: ffff88803286aa68 (mapping.invalidate_lock#4){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:857 [inline]
#0: ffff88803286aa68 (mapping.invalidate_lock#4){.+.+}-{3:3}, at: page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225
2 locks held by syz-executor.1/20486:
#0: ffff88802a53e420 (sb_writers#19){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x220 fs/splice.c:1163
#1: ffff88803286a8c8 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88803286a8c8 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: btrfs_inode_lock+0x4d/0xe0 fs/btrfs/inode.c:387
4 locks held by syz-executor.1/20487:
#0: ffff88803286a8c8 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff88803286a8c8 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xe0 fs/btrfs/inode.c:379
#1: ffff88802d9fbaa0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#1: ffff88802d9fbaa0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5477 [inline]
#1: ffff88802d9fbaa0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2e0 mm/memory.c:5537
#2: ffff88802a53e518 (sb_pagefaults#3){.+.+}-{0:0}, at: do_page_mkwrite+0x19b/0x480 mm/memory.c:2966
#3: ffff88803286a750 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x603/0x10c0 fs/btrfs/inode.c:8169
3 locks held by syz-executor.4/22752:
#0: ffff88807bfc8240 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:663 [inline]
#0: ffff88807bfc8240 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f9/0x730 mm/memory.c:5606
#1: ffff888032e5a518 (sb_pagefaults#3){.+.+}-{0:0}, at: do_page_mkwrite+0x19b/0x480 mm/memory.c:2966
#2: ffff8880329eee90 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x603/0x10c0 fs/btrfs/inode.c:8169
1 lock held by syz-executor.4/22753:
#0: ffff8880329ef1a8 (mapping.invalidate_lock#4){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:857 [inline]
#0: ffff8880329ef1a8 (mapping.invalidate_lock#4){.+.+}-{3:3}, at: page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225
2 locks held by syz-executor.4/22783:
#0: ffff888032e5a420 (sb_writers#19){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x220 fs/splice.c:1163
#1: ffff8880329ef008 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff8880329ef008 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: btrfs_inode_lock+0x4d/0xe0 fs/btrfs/inode.c:387
4 locks held by syz-executor.4/22784:
#0: ffff8880329ef008 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff8880329ef008 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xe0 fs/btrfs/inode.c:379
#1: ffff88804f4c4420 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#1: ffff88804f4c4420 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5477 [inline]
#1: ffff88804f4c4420 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2e0 mm/memory.c:5537
#2: ffff888032e5a518 (sb_pagefaults#3){.+.+}-{0:0}, at: do_page_mkwrite+0x19b/0x480 mm/memory.c:2966
#3: ffff8880329eee90 (&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-00317-g7521f258ea30 #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+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/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: 2861 Comm: kworker/u4:12 Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0x375/0x1fd0 kernel/locking/lockdep.c:5072
Code: 28 49 8d 5c e8 10 48 89 d8 48 c1 e8 03 80 3c 30 00 74 17 48 89 df e8 ea 1c 81 00 4c 8b 44 24 08 48 be 00 00 00 00 00 fc ff df <4c> 89 23 49 8d 5c e8 18 48 89 d8 48 c1 e8 03 48 89 44 24 78 80 3c
RSP: 0018:ffffc9000a0df890 EFLAGS: 00000046
RAX: 1ffff1100583c51c RBX: ffff88802c1e28e0 RCX: ffffffff9444b303
RDX: 0000000000000002 RSI: dffffc0000000000 RDI: 00000000000006ce
RBP: 000000000000000a R08: ffff88802c1e2880 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f085d6 R12: ffff888040f71e18
R13: 00000000000006ce R14: 000000000000000a R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055615c911008 CR3: 000000000df32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
batadv_nc_purge_paths+0xe8/0x3b0 net/batman-adv/network-coding.c:442
batadv_nc_worker+0x328/0x610 net/batman-adv/network-coding.c:720
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242