INFO: task syz.3.359:7199 blocked for more than 143 seconds.
Not tainted 6.16.0-rc3-next-20250627-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.359 state:D stack:16840 pid:7199 tgid:7198 ppid:5840 task_flags:0x440140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5313 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6696
__schedule_loop kernel/sched/core.c:6774 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6789
__bch2_two_state_lock+0x1ea/0x370 fs/bcachefs/two_state_shared_lock.c:7
bch2_two_state_lock fs/bcachefs/two_state_shared_lock.h:55 [inline]
bch2_readahead+0x94f/0x1100 fs/bcachefs/fs-io-buffered.c:296
read_pages+0x17a/0x580 mm/readahead.c:160
page_cache_ra_order+0x8ca/0xd40 mm/readahead.c:512
filemap_get_pages+0x43c/0x1ea0 mm/filemap.c:2603
filemap_splice_read+0x4fc/0xbc0 mm/filemap.c:2991
do_splice_read fs/splice.c:979 [inline]
splice_direct_to_actor+0x4a6/0xcc0 fs/splice.c:1083
do_splice_direct_actor fs/splice.c:1201 [inline]
do_splice_direct+0x181/0x270 fs/splice.c:1227
vfs_copy_file_range+0xabc/0x1310 fs/read_write.c:1627
__do_sys_copy_file_range fs/read_write.c:1677 [inline]
__se_sys_copy_file_range+0x2fb/0x470 fs/read_write.c:1644
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f720a58e929
RSP: 002b:00007f720b38e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007f720a7b5fa0 RCX: 00007f720a58e929
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f720a610b39 R08: fffffbffa003e458 R09: 0700000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f720a7b5fa0 R15: 00007ffea03de368
INFO: task syz.3.359:7257 blocked for more than 145 seconds.
Not tainted 6.16.0-rc3-next-20250627-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.359 state:D stack:27768 pid:7257 tgid:7198 ppid:5840 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5313 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6696
__schedule_loop kernel/sched/core.c:6774 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6789
io_schedule+0x80/0xd0 kernel/sched/core.c:7634
folio_wait_bit_common+0x6b0/0xb90 mm/filemap.c:1317
__folio_lock mm/filemap.c:1675 [inline]
folio_lock include/linux/pagemap.h:1114 [inline]
__filemap_get_folio+0x139/0xaf0 mm/filemap.c:1929
filemap_lock_folio include/linux/pagemap.h:785 [inline]
__bch2_truncate_folio+0x11d/0x1a30 fs/bcachefs/fs-io.c:291
bch2_truncate_folio fs/bcachefs/fs-io.c:393 [inline]
bchfs_truncate+0x5de/0xc20 fs/bcachefs/fs-io.c:483
notify_change+0xb36/0xe40 fs/attr.c:552
do_truncate+0x1a4/0x220 fs/open.c:68
vfs_truncate+0x493/0x520 fs/open.c:118
do_sys_truncate+0xdb/0x190 fs/open.c:141
__do_sys_truncate fs/open.c:153 [inline]
__se_sys_truncate fs/open.c:151 [inline]
__x64_sys_truncate+0x5b/0x70 fs/open.c:151
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f720a58e929
RSP: 002b:00007f720b36d038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007f720a7b6080 RCX: 00007f720a58e929
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00002000000000c0
RBP: 00007f720a610b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f720a7b6080 R15: 00007ffea03de368
Showing all locks held in the system:
1 lock held by rcu_exp_gp_kthr/18:
#0: ffff8880b8639f58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:614
3 locks held by kworker/1:0/24:
#0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3322
#1: ffffc900001e7bc0 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3215 [inline]
#1: ffffc900001e7bc0 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3322
#2: ffff88807ca03240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x26b/0x3180 drivers/net/netdevsim/fib.c:1490
1 lock held by khungtaskd/31:
#0: ffffffff8e13bf20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e13bf20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e13bf20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770
4 locks held by kworker/u8:9/1166:
#0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3322
#1: ffffc90003ecfbc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3215 [inline]
#1: ffffc90003ecfbc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3322
#2: ffffffff8f517b88 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:303
#3: ffffffff8e141a38 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:311 [inline]
#3: ffffffff8e141a38 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730 kernel/rcu/tree_exp.h:967
2 locks held by kworker/1:3/5824:
2 locks held by getty/6986:
#0: ffff8880343450a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000e2752f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
1 lock held by syz.3.359/7199:
#0: ffff8880576f99b0 (mapping.invalidate_lock#3){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:934 [inline]
#0: ffff8880576f99b0 (mapping.invalidate_lock#3){.+.+}-{4:4}, at: page_cache_ra_order+0x318/0xd40 mm/readahead.c:488
2 locks held by syz.3.359/7257:
#0: ffff88802760c428 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
#1: ffff8880576f9810 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:874 [inline]
#1: ffff8880576f9810 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: do_truncate+0x171/0x220 fs/open.c:63
2 locks held by syz-executor/8737:
#0: ffffffff8f57c9b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8f517b88 (rtnl_mutex){+.+.}-{4:4}, at: nl80211_pre_doit+0x5f/0x930 net/wireless/nl80211.c:17248
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc3-next-20250627-syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:470
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8768 Comm: kworker/u8:12 Not tainted 6.16.0-rc3-next-20250627-syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:kasan_check_range+0x1d3/0x2c0 mm/kasan/generic.c:189
Code: 4d 01 f3 49 8d 5c 24 07 4d 85 e4 49 0f 49 dc 48 83 e3 f8 49 29 dc 74 12 41 80 3b 00 0f 85 b8 00 00 00 49 ff c3 49 ff cc 75 ee <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 ce 26 4e 09 cc 45 84 ff 75 63 41
RSP: 0018:ffffc900042def28 EFLAGS: 00000256
RAX: ffffffff8b6b6c01 RBX: 0000000000000000 RCX: ffffffff8b6b6c44
RDX: 0000000000000001 RSI: 0000000000000018 RDI: ffffc900042defe0
RBP: 0000000000000000 R08: ffffc900042deff7 R09: 1ffff9200085bdfe
R10: dffffc0000000000 R11: fffff5200085bdff R12: 0000000000000003
R13: dffffc0000000000 R14: fffff5200085bdff R15: 1ffff9200085bdfc
FS: 0000000000000000(0000) GS:ffff888125d1e000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43b9d81178 CR3: 0000000076b46000 CR4: 00000000003526f0
Call Trace:
__asan_memset+0x22/0x50 mm/kasan/shadow.c:84
sprintf+0xa4/0x120 lib/vsprintf.c:3085
print_time kernel/printk/printk.c:1381 [inline]
info_print_prefix+0x155/0x310 kernel/printk/printk.c:1407
record_print_text+0x154/0x430 kernel/printk/printk.c:1456
printk_get_next_message+0x26d/0x7b0 kernel/printk/printk.c:3024
console_emit_next_record kernel/printk/printk.c:3092 [inline]
console_flush_all+0x4ca/0xc40 kernel/printk/printk.c:3226
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0xc4/0x270 kernel/printk/printk.c:3325
vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450
_printk+0xcf/0x120 kernel/printk/printk.c:2475
ieee80211_sta_find_ibss net/mac80211/ibss.c:1443 [inline]
ieee80211_ibss_work+0xdae/0x1060 net/mac80211/ibss.c:1662
cfg80211_wiphy_work+0x2df/0x460 net/wireless/core.c:435
process_one_work kernel/workqueue.c:3239 [inline]
process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3322
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3403
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245