INFO: task syz-executor.0:13547 blocked for more than 143 seconds.
Not tainted 6.2.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:17296 pid:13547 ppid:5106 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
rwsem_down_write_slowpath+0xfc1/0x1480 kernel/locking/rwsem.c:1190
__down_write_common kernel/locking/rwsem.c:1305 [inline]
__down_write kernel/locking/rwsem.c:1314 [inline]
down_write+0x231/0x270 kernel/locking/rwsem.c:1563
btrfs_inode_lock+0xc1/0xd0 fs/btrfs/inode.c:195
btrfs_sync_file+0x48b/0x1190 fs/btrfs/file.c:1817
generic_write_sync include/linux/fs.h:2885 [inline]
btrfs_do_write_iter+0xcd3/0x1280 fs/btrfs/file.c:1684
do_iter_write+0x6c2/0xc20 fs/read_write.c:861
iter_file_splice_write+0x7fc/0xfc0 fs/splice.c:686
do_splice_from fs/splice.c:764 [inline]
direct_splice_actor+0xe6/0x1c0 fs/splice.c:931
splice_direct_to_actor+0x4e4/0xc00 fs/splice.c:886
do_splice_direct+0x279/0x3d0 fs/splice.c:974
do_sendfile+0x5fb/0xf80 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64+0x14f/0x1b0 fs/read_write.c:1309
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fef3208c0c9
RSP: 002b:00007fef32e9c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fef321abf80 RCX: 00007fef3208c0c9
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000008
RBP: 00007fef320e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 000080001d00c0d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff80727cdf R14: 00007fef32e9c300 R15: 0000000000022000
INFO: task syz-executor.0:13634 blocked for more than 144 seconds.
Not tainted 6.2.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:20736 pid:13634 ppid:5106 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1095
__down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260
btrfs_page_mkwrite+0x417/0xc80 fs/btrfs/inode.c:8526
do_page_mkwrite+0x19e/0x5e0 mm/memory.c:2947
wp_page_shared+0x15e/0x380 mm/memory.c:3295
handle_pte_fault mm/memory.c:4949 [inline]
__handle_mm_fault mm/memory.c:5073 [inline]
handle_mm_fault+0x1b79/0x26b0 mm/memory.c:5219
do_user_addr_fault+0x69b/0xcb0 arch/x86/mm/fault.c:1428
handle_page_fault arch/x86/mm/fault.c:1519 [inline]
exc_page_fault+0x7a/0x110 arch/x86/mm/fault.c:1575
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:copy_user_enhanced_fast_string+0xa/0x40 arch/x86/lib/copy_user_64.S:166
Code: ff c9 75 f2 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 8d 0c ca 89 ca eb 20 0f 01 cb 83 fa 40 72 38 89 d1 a4 31 c0 0f 01 ca c3 89 ca eb 0a 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc90005357810 EFLAGS: 00050206
RAX: ffffffff843c3401 RBX: 00007fffffffe000 RCX: 0000000000000400
RDX: 0000000000001000 RSI: ffff88803c7aac00 RDI: 000000002001e000
RBP: ffffc90005357990 R08: dffffc0000000000 R09: ffffed10078f5600
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000001000
R13: 000000000001d400 R14: 000000002001d400 R15: ffff88803c7aa000
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]
copyout+0xd8/0x120 lib/iov_iter.c:170
_copy_to_iter+0x4d2/0x1020 lib/iov_iter.c:529
copy_page_to_iter+0xf0/0x250 lib/iov_iter.c:727
copy_folio_to_iter include/linux/uio.h:172 [inline]
filemap_read+0x790/0xea0 mm/filemap.c:2745
do_iter_read+0x6e3/0xc10 fs/read_write.c:796
vfs_readv fs/read_write.c:916 [inline]
do_preadv+0x1f4/0x330 fs/read_write.c:1008
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fef3208c0c9
RSP: 002b:00007fef32e7b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000147
RAX: ffffffffffffffda RBX: 00007fef321ac050 RCX: 00007fef3208c0c9
RDX: 0000000000000001 RSI: 0000000020000100 RDI: 000000000000000a
RBP: 00007fef320e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004c00 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff80727cdf R14: 00007fef32e7b300 R15: 0000000000022000
INFO: task syz-executor.0:13635 blocked for more than 146 seconds.
Not tainted 6.2.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:21768 pid:13635 ppid:5106 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
wait_extent_bit+0x577/0x6f0 fs/btrfs/extent-io-tree.c:751
lock_extent+0x1c2/0x280 fs/btrfs/extent-io-tree.c:1742
btrfs_page_mkwrite+0x533/0xc80 fs/btrfs/inode.c:8537
do_page_mkwrite+0x19e/0x5e0 mm/memory.c:2947
wp_page_shared+0x15e/0x380 mm/memory.c:3295
handle_pte_fault mm/memory.c:4949 [inline]
__handle_mm_fault mm/memory.c:5073 [inline]
handle_mm_fault+0x1b79/0x26b0 mm/memory.c:5219
do_user_addr_fault+0x69b/0xcb0 arch/x86/mm/fault.c:1428
handle_page_fault arch/x86/mm/fault.c:1519 [inline]
exc_page_fault+0x7a/0x110 arch/x86/mm/fault.c:1575
asm_exc_page_fault+0x22/0x30 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:ffffc90005a67550 EFLAGS: 00050202
RAX: ffffffff843e7e01 RBX: 00007fffffffefc8 RCX: 0000000000000007
RDX: 0000000000000000 RSI: ffffc90005a67600 RDI: 0000000020001460
RBP: ffffc90005a676b0 R08: 0000000000000000 R09: fffff52000b4cec7
R10: fffff52000b4cec7 R11: 1ffff92000b4cec0 R12: 0000000000000038
R13: ffffc90005a67600 R14: 0000000020001460 R15: ffffc90005a67600
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+0xe9/0x130 lib/usercopy.c:34
copy_to_user include/linux/uaccess.h:169 [inline]
fiemap_fill_next_extent+0x22e/0x410 fs/ioctl.c:144
emit_last_fiemap_cache fs/btrfs/extent_io.c:3492 [inline]
extent_fiemap+0x1bdf/0x2100 fs/btrfs/extent_io.c:4018
btrfs_fiemap+0x172/0x1e0 fs/btrfs/inode.c:8209
ioctl_fiemap fs/ioctl.c:219 [inline]
do_vfs_ioctl+0x185b/0x2980 fs/ioctl.c:810
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x83/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fef3208c0c9
RSP: 002b:00007fef32e5a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fef321ac120 RCX: 00007fef3208c0c9
RDX: 0000000020001440 RSI: 00000000c020660b RDI: 0000000000000007
RBP: 00007fef320e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff80727cdf R14: 00007fef32e5a300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d326fd0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d3277d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d326e00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4750:
#0:
ffff88802c223098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
2 locks held by kworker/1:3/5132:
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90003fffd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
3 locks held by kworker/1:12/5844:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9000b66fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
#2: ffffffff8d32c478 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#2: ffffffff8d32c478 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x384/0x860 kernel/rcu/tree_exp.h:946
3 locks held by syz-executor.0/13547:
#0: ffff88807623e460 (sb_writers#15){.+.+}-{0:0}, at: do_sendfile+0x5d6/0xf80 fs/read_write.c:1254
#1: ffff888031357960 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff888031357960 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: btrfs_inode_lock+0x49/0xd0 fs/btrfs/inode.c:192
#2: ffff8880313577e8 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_inode_lock+0xc1/0xd0 fs/btrfs/inode.c:195
3 locks held by syz-executor.0/13634:
#0: ffff8880762412d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#0: ffff8880762412d8 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault+0x2e2/0xcb0 arch/x86/mm/fault.c:1369
#1: ffff88807623e558 (sb_pagefaults#2){.+.+}-{0:0}, at: do_page_mkwrite+0x19e/0x5e0 mm/memory.c:2947
#2: ffff8880313577e8 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x417/0xc80 fs/btrfs/inode.c:8526
3 locks held by syz-executor.0/13635:
#0: ffff8880762412d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#0: ffff8880762412d8 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault+0x2e2/0xcb0 arch/x86/mm/fault.c:1369
#1: ffff88807623e558 (sb_pagefaults#2){.+.+}-{0:0}, at: do_page_mkwrite+0x19e/0x5e0 mm/memory.c:2947
#2: ffff8880313577e8 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x417/0xc80 fs/btrfs/inode.c:8526
2 locks held by syz-executor.0/17823:
1 lock held by syz-executor.2/17829:
#0: ffff88803d7740e0 (&type->s_umount_key#51/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 fs/super.c:228
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 17016 Comm: kworker/u4:9 Not tainted 6.2.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:match_held_lock+0x0/0xb0 kernel/locking/lockdep.c:5113
Code: 56 ff ff ff 31 db 48 c7 c7 e0 ba ed 8a 48 c7 c6 20 bb ed 8a 31 c0 e8 1f 65 a1 f6 0f 0b e9 38 ff ff ff e8 c3 fa ff ff 0f 1f 00 <55> 53 bd 01 00 00 00 48 39 77 10 74 67 48 89 fb 81 7f 20 00 00 10
RSP: 0018:ffffc900065f79d8 EFLAGS: 00000087
RAX: 0000000000000003 RBX: 0000000000000002 RCX: 00000000065f7a03
RDX: 1ffff92000cbef4c RSI: ffff88802d0edb18 RDI: ffff88805ba78a88
RBP: ffffc900065f7b18 R08: dffffc0000000000 R09: fffffbfff1d2d2fe
R10: fffffbfff1d2d2fe R11: 1ffffffff1d2d2fd R12: dffffc0000000000
R13: ffff88805ba78a88 R14: 0000000000000002 R15: 000000000000000a
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2e44c8c000 CR3: 00000000404a4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
find_held_lock kernel/locking/lockdep.c:5158 [inline]
__lock_release kernel/locking/lockdep.c:5343 [inline]
lock_release+0x1dd/0x820 kernel/locking/lockdep.c:5688
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:165 [inline]
_raw_spin_unlock_bh+0x17/0x30 kernel/locking/spinlock.c:210
spin_unlock_bh include/linux/spinlock.h:395 [inline]
batadv_nc_purge_paths+0x35f/0x3f0 net/batman-adv/network-coding.c:471
batadv_nc_worker+0x31e/0x5b0 net/batman-adv/network-coding.c:722
process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308