INFO: task syz.6.58:5375 blocked for more than 143 seconds.
Not tainted 6.13.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.58 state:D stack:12648 pid:5375 tgid:5375 ppid:2952 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x68f/0xa80 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xac/0x140 kernel/sched/core.c:6848
__bch2_two_state_lock+0xa3/0xe0 fs/bcachefs/two_state_shared_lock.c:7
bch2_two_state_lock fs/bcachefs/two_state_shared_lock.h:55 [inline]
bch2_page_fault+0xe7/0x1c0 fs/bcachefs/fs-io-pagecache.c:592
__do_fault+0x3d/0xd0 mm/memory.c:4907
do_shared_fault mm/memory.c:5386 [inline]
do_fault mm/memory.c:5460 [inline]
do_pte_missing mm/memory.c:3979 [inline]
handle_pte_fault mm/memory.c:5801 [inline]
__handle_mm_fault mm/memory.c:5944 [inline]
handle_mm_fault+0xcdf/0x1ac0 mm/memory.c:6112
do_user_addr_fault+0x1a8/0x6f0 arch/x86/mm/fault.c:1338
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x54/0xc0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7efc525567c7
RSP: 002b:00007fff3c9d8a58 EFLAGS: 00010203
RAX: 0000200000002500 RBX: 0000000000000004 RCX: 0000200000002500
RDX: 00002000000036e8 RSI: 00007efc52025cad RDI: 0000200000002520
RBP: 00007efc527b7ba0 R08: 0000000000000000 R09: 0000000000000049
R10: 0000000000000000 R11: 0000000000000001 R12: 00007efc527b616c
R13: 00007efc527b6160 R14: fffffffffffffffe R15: 00007fff3c9d8b70
INFO: task syz.6.58:5377 blocked for more than 143 seconds.
Not tainted 6.13.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.58 state:D stack:7992 pid:5377 tgid:5375 ppid:2952 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x68f/0xa80 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xac/0x140 kernel/sched/core.c:6848
__bch2_two_state_lock+0xa3/0xe0 fs/bcachefs/two_state_shared_lock.c:7
bch2_two_state_lock fs/bcachefs/two_state_shared_lock.h:55 [inline]
bch2_readahead+0x2f9/0x5a0 fs/bcachefs/fs-io-buffered.c:272
read_pages+0x8f/0x1c0 mm/readahead.c:160
page_cache_ra_order+0x1fa/0x300 mm/readahead.c:512
page_cache_sync_readahead include/linux/pagemap.h:1397 [inline]
filemap_get_pages+0x159/0x800 mm/filemap.c:2546
filemap_splice_read+0x1b3/0x3b0 mm/filemap.c:2922
do_splice_read fs/splice.c:985 [inline]
splice_direct_to_actor+0xe9/0x2e0 fs/splice.c:1089
do_splice_direct_actor fs/splice.c:1207 [inline]
do_splice_direct+0x70/0xb0 fs/splice.c:1233
vfs_copy_file_range+0x519/0x6b0 fs/read_write.c:1620
__do_sys_copy_file_range fs/read_write.c:1670 [inline]
__se_sys_copy_file_range+0x169/0x200 fs/read_write.c:1637
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x8f/0x180 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efc5258e929
RSP: 002b:00007efc533d6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007efc527b5fa0 RCX: 00007efc5258e929
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007efc52610b39 R08: 0000000000400000 R09: 0000000000000000
R10: 00002000000000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007efc527b5fa0 R15: 00007fff3c9d88f8
INFO: task syz.6.58:5427 blocked for more than 143 seconds.
Not tainted 6.13.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.58 state:D stack:13432 pid:5427 tgid:5375 ppid:2952 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x68f/0xa80 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xac/0x140 kernel/sched/core.c:6848
io_schedule+0x3f/0x60 kernel/sched/core.c:7681
folio_wait_bit_common+0x1c4/0x370 mm/filemap.c:1308
folio_lock include/linux/pagemap.h:1151 [inline]
invalidate_inode_pages2_range+0x1ae/0x560 mm/truncate.c:627
bch2_write_invalidate_inode_pages_range+0x5b/0x80 fs/bcachefs/fs-io-pagecache.c:68
bch2_direct_write+0xb93/0xc50 fs/bcachefs/fs-io-direct.c:653
bch2_write_iter+0xa2/0xf80 fs/bcachefs/fs-io-buffered.c:1047
do_iter_readv_writev+0x17f/0x1d0 fs/read_write.c:-1
vfs_writev+0x236/0x4d0 fs/read_write.c:1050
do_pwritev fs/read_write.c:1146 [inline]
__do_sys_pwritev2 fs/read_write.c:1204 [inline]
__se_sys_pwritev2+0x66/0x100 fs/read_write.c:1195
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x8f/0x180 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efc5258e929
RSP: 002b:00007efc533b5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007efc527b6080 RCX: 00007efc5258e929
RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000005
RBP: 00007efc52610b39 R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000007000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007efc527b6080 R15: 00007fff3c9d88f8
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffffffff83b82fb8 (rcu_state.exp_mutex){....}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#0: ffffffff83b82fb8 (rcu_state.exp_mutex){....}-{3:3}, at: synchronize_rcu_expedited+0x2de/0x640 kernel/rcu/tree_exp.h:976
1 lock held by khungtaskd/30:
#0: ffffffff83b81fa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff83b81fa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff83b81fa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x2e/0x100 kernel/locking/lockdep.c:6744
1 lock held by kworker/1:1/44:
#0: ffff888237d31418 (&rq->__lock){....}-{2:2}, at: raw_spin_rq_lock_nested+0x20/0x70 kernel/sched/core.c:598
2 locks held by getty/1478:
#0: ffff8881086f58a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243
#1: ffffc90002acf2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x1bb/0x6e0 drivers/tty/n_tty.c:2211
2 locks held by kworker/u8:5/1579:
#0: ffff88810007c948 ((wq_completion)events_unbound){....}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88810007c948 ((wq_completion)events_unbound){....}-{0:0}, at: process_scheduled_works+0x281/0x5e0 kernel/workqueue.c:3310
#1: ffffc90001037e58 ((reaper_work).work){....}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90001037e58 ((reaper_work).work){....}-{0:0}, at: process_scheduled_works+0x2a1/0x5e0 kernel/workqueue.c:3310
2 locks held by kworker/u8:7/2982:
#0: ffff88810007c948 ((wq_completion)events_unbound){....}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88810007c948 ((wq_completion)events_unbound){....}-{0:0}, at: process_scheduled_works+0x281/0x5e0 kernel/workqueue.c:3310
#1: ffffc90002d57e58 (connector_reaper_work){....}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90002d57e58 (connector_reaper_work){....}-{0:0}, at: process_scheduled_works+0x2a1/0x5e0 kernel/workqueue.c:3310
1 lock held by syz.6.58/5375:
#0: ffff88817a86c108 (&vma->vm_lock->lock){....}-{3:3}, at: vma_start_read include/linux/mm.h:716 [inline]
#0: ffff88817a86c108 (&vma->vm_lock->lock){....}-{3:3}, at: lock_vma_under_rcu+0xda/0x1d0 mm/memory.c:6278
1 lock held by syz.6.58/5377:
#0: ffff888179bc2ce8 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:873 [inline]
#0: ffff888179bc2ce8 (mapping.invalidate_lock#3){....}-{3:3}, at: page_cache_ra_order+0xf3/0x300 mm/readahead.c:488
1 lock held by syz.6.58/5427:
#0: ffff888109a953f8 (sb_writers#13){....}-{0:0}, at: do_pwritev fs/read_write.c:1146 [inline]
#0: ffff888109a953f8 (sb_writers#13){....}-{0:0}, at: __do_sys_pwritev2 fs/read_write.c:1204 [inline]
#0: ffff888109a953f8 (sb_writers#13){....}-{0:0}, at: __se_sys_pwritev2+0x66/0x100 fs/read_write.c:1195
2 locks held by syz.3.1010/15245:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0xa4/0xf0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x10b/0x170 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x8e/0x140 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0x5ed/0x610 kernel/hung_task.c:397
kthread+0xe9/0x100 kernel/kthread.c:389
ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 2446 Comm: syz-execprog Not tainted 6.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0033:0x41567f
Code: 4c 8d 04 3a 4c 8d 0c de 90 90 48 8d 1c de 48 8d 5b 08 49 83 f8 40 76 4d 48 8d 72 c0 48 f7 de 48 8d 14 17 48 8d 52 c0 49 8b 39 <48> d3 ef 48 89 c8 4c 89 c1 41 b9 01 00 00 00 49 d3 e1 48 f7 d8 48
RSP: 002b:00007ffd1cdc57c8 EFLAGS: 00000217
RAX: 00007fc312ec1e08 RBX: 000000c000337ff8 RCX: 00000000000003ba
RDX: 000000000000000c RSI: 0000000000000006 RDI: abffff807fbffff8
RBP: 00007ffd1cdc57e0 R08: 000000000000004c R09: 000000c000337ff0
R10: 000000c0077d2800 R11: 00000000000000a3 R12: 00007ffd1cdc5870
R13: 0000000002e2aea0 R14: 000000000302dc20 R15: 0000000000000003
FS: 000000000302f590 GS: 0000000000000000