INFO: task syz.9.1224:18315 blocked for more than 143 seconds.
Not tainted 6.16.0-rc5-syzkaller-00053-g8c2e52ebbe88 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.1224 state:D stack:24616 pid:18315 tgid:18315 ppid:14026 task_flags:0x400040 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5401 [inline]
__schedule+0x16a2/0x4cb0 kernel/sched/core.c:6790
__schedule_loop kernel/sched/core.c:6868 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6883
__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_page_fault+0x2f6/0x7a0 fs/bcachefs/fs-io-pagecache.c:592
__do_fault+0x138/0x390 mm/memory.c:5169
do_shared_fault mm/memory.c:5654 [inline]
do_fault mm/memory.c:5728 [inline]
do_pte_missing mm/memory.c:4251 [inline]
handle_pte_fault mm/memory.c:6069 [inline]
__handle_mm_fault+0x198b/0x5620 mm/memory.c:6212
handle_mm_fault+0x2d5/0x7f0 mm/memory.c:6381
do_user_addr_fault+0xa81/0x1390 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fc5cb956698
RSP: 002b:00007ffd61c6bf48 EFLAGS: 00010246
RAX: 00002000000001c0 RBX: 0000000000000004 RCX: 0031656c69662f2e
RDX: 0000000000000008 RSI: 0031656c69662f2e RDI: 00002000000001c0
RBP: 00007fc5cbbb7ba0 R08: 00007fc5cb800000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000009 R12: 00007fc5cbbb5fac
R13: 00007ffd61c6c040 R14: fffffffffffffffe R15: 00007ffd61c6c060
INFO: task syz.9.1224:18316 blocked for more than 143 seconds.
Not tainted 6.16.0-rc5-syzkaller-00053-g8c2e52ebbe88 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.1224 state:D stack:17544 pid:18316 tgid:18315 ppid:14026 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5401 [inline]
__schedule+0x16a2/0x4cb0 kernel/sched/core.c:6790
__schedule_loop kernel/sched/core.c:6868 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6883
io_schedule+0x81/0xe0 kernel/sched/core.c:7728
folio_wait_bit_common+0x6b0/0xb90 mm/filemap.c:1317
folio_lock include/linux/pagemap.h:1114 [inline]
invalidate_inode_pages2_range+0x557/0xa80 mm/truncate.c:690
bch2_write_invalidate_inode_pages_range+0xc5/0x110 fs/bcachefs/fs-io-pagecache.c:68
bch2_remap_file_range+0x56f/0xd10 fs/bcachefs/fs-io.c:920
vfs_copy_file_range+0xd56/0x1310 fs/read_write.c:1591
__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: 0033:0x7fc5cb98e929
RSP: 002b:00007fc5cc7fa038 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007fc5cbbb5fa0 RCX: 00007fc5cb98e929
RDX: 0000000000000012 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00007fc5cba10b39 R08: fffffbffa003e45b R09: 0700000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc5cbbb5fa0 R15: 00007ffd61c6bde8
INFO: task syz.9.1224:18339 blocked for more than 144 seconds.
Not tainted 6.16.0-rc5-syzkaller-00053-g8c2e52ebbe88 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.1224 state:D stack:20552 pid:18339 tgid:18315 ppid:14026 task_flags:0x440040 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5401 [inline]
__schedule+0x16a2/0x4cb0 kernel/sched/core.c:6790
__schedule_loop kernel/sched/core.c:6868 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6883
__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+0xa81/0xc70 mm/readahead.c:515
filemap_get_pages+0x43c/0x1ea0 mm/filemap.c:2602
filemap_splice_read+0x4fc/0xbc0 mm/filemap.c:2990
do_splice_read fs/splice.c:979 [inline]
splice_direct_to_actor+0x4a9/0xcc0 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: 0033:0x7fc5cb98e929
RSP: 002b:00007fc5cc7d9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007fc5cbbb6080 RCX: 00007fc5cb98e929
RDX: 000000000000000e RSI: 0000000000000000 RDI: 000000000000000f
RBP: 00007fc5cba10b39 R08: 0000000000008001 R09: 0700000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fc5cbbb6080 R15: 00007ffd61c6bde8
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e13f160 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e13f160 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e13f160 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770
2 locks held by kworker/u8:3/49:
#0: ffff8880b8739e18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:606
#1: ffff8880b8723f08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39e/0x6d0 kernel/sched/psi.c:987
1 lock held by klogd/5196:
#0: ffff8880b8639e18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:606
2 locks held by getty/5597:
#0: ffff8880359880a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000333b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
1 lock held by syz.9.1224/18315:
#0: ffff888058f97588 (vm_lock){++++}-{0:0}, at: do_user_addr_fault+0x2d9/0x1390 arch/x86/mm/fault.c:1327
3 locks held by syz.9.1224/18316:
#0: ffff888081626428 (sb_writers#13){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3096 [inline]
#0: ffff888081626428 (sb_writers#13){.+.+}-{0:0}, at: vfs_copy_file_range+0x916/0x1310 fs/read_write.c:1579
#1: ffff8880728fa740 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline]
#1: ffff8880728fa740 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: lock_two_nondirectories+0xe7/0x180 fs/inode.c:1233
#2: ffff8880728fb670 (&sb->s_type->i_mutex_key#20/4){+.+.}-{4:4}, at: bch2_remap_file_range+0x2b0/0xd10 fs/bcachefs/fs-io.c:906
1 lock held by syz.9.1224/18339:
#0: ffff8880728fa8e0 (mapping.invalidate_lock#11){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:934 [inline]
#0: ffff8880728fa8e0 (mapping.invalidate_lock#11){.+.+}-{4:4}, at: page_cache_ra_order+0x445/0xc70 mm/readahead.c:491
1 lock held by rm/21683:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc5-syzkaller-00053-g8c2e52ebbe88 #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:158 [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:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 21685 Comm: dhcpcd-run-hook Not tainted 6.16.0-rc5-syzkaller-00053-g8c2e52ebbe88 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
RIP: 0010:do_raw_spin_lock+0x88/0x290 kernel/locking/spinlock_debug.c:115
Code: f1 f1 04 f3 f3 f3 48 89 4c 24 18 4a 89 04 39 4c 8d 77 04 4c 89 f0 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 9f 01 00 00 41 8b 06 <3d> ad 4e ad de 0f 85 1b 01 00 00 4c 8d 63 10 4d 89 e6 49 c1 ee 03
RSP: 0018:ffffc900000072e0 EFLAGS: 00000046
RAX: 00000000dead4ead RBX: ffff8880826986b8 RCX: 1ffff92000000e60
RDX: 0000000000000000 RSI: ffffffff8db71883 RDI: ffff8880826986b8
RBP: ffffc90000007390 R08: 0000000000000000 R09: ffffffff8ab87c9d
R10: dffffc0000000000 R11: fffffbfff1f418bf R12: dffffc0000000000
R13: ffff888094255978 R14: ffff8880826986bc R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888125c4f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f40060d2eb8 CR3: 000000008e476000 CR4: 00000000003526f0
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0xb3/0xf0 kernel/locking/spinlock.c:162
wiphy_work_queue+0xcd/0x390 net/wireless/core.c:1668
__ieee80211_queue_skb_to_iface net/mac80211/rx.c:233 [inline]
ieee80211_queue_skb_to_iface net/mac80211/rx.c:244 [inline]
ieee80211_rx_h_mgmt+0x4f8/0x6f0 net/mac80211/rx.c:4085
ieee80211_rx_handlers+0x85b1/0xbce0 net/mac80211/rx.c:4160
ieee80211_invoke_rx_handlers net/mac80211/rx.c:4190 [inline]
ieee80211_prepare_and_rx_handle+0x266f/0x63a0 net/mac80211/rx.c:5044
__ieee80211_rx_handle_packet net/mac80211/rx.c:5285 [inline]
ieee80211_rx_list+0x2499/0x2d80 net/mac80211/rx.c:5420
ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5443
ieee80211_rx include/net/mac80211.h:5185 [inline]
ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:441
tasklet_action_common+0x369/0x580 kernel/softirq.c:829
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:debug_lockdep_rcu_enabled+0xd/0x40 kernel/rcu/update.c:320
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 83 3d 37 c7 38 04 00 <74> 1e 83 3d 5a f7 38 04 00 74 15 65 48 8b 0c 25 08 10 9d 92 31 c0
RSP: 0018:ffffc9000c1c7bf8 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 1ffff92001838f88 RCX: 80dfa9a3cdc06600
RDX: 0000000000000000 RSI: 0000000000000141 RDI: ffffffff8d9ff72a
RBP: ffffc9000c1c7d10 R08: 0000000000000000 R09: ffffffff821432bd
R10: ffffc9000c1c7e00 R11: fffff52001838fc2 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88814040b780 R15: 00007ffe908b18f0
__might_resched+0x91/0x610 kernel/sched/core.c:8767
might_alloc include/linux/sched/mm.h:321 [inline]
slab_pre_alloc_hook mm/slub.c:4099 [inline]
slab_alloc_node mm/slub.c:4177 [inline]
kmem_cache_alloc_noprof+0x64/0x3c0 mm/slub.c:4204
getname_flags+0xb8/0x540 fs/namei.c:146
getname include/linux/fs.h:2907 [inline]
do_sys_openat2+0xbc/0x1c0 fs/open.c:1431
do_sys_open fs/open.c:1452 [inline]
__do_sys_openat fs/open.c:1468 [inline]
__se_sys_openat fs/open.c:1463 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1463
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: 0033:0x7f40063bd0ba
Code: 41 89 f2 48 89 54 24 e0 41 83 e2 40 75 2a 89 f0 f7 d0 a9 00 00 41 00 74 1f 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 77 2e c3 0f 1f 44 00 00 48 8d 44 24 08 c7 44 24
RSP: 002b:00007ffe908b1878 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffe908b18f0 RCX: 00007f40063bd0ba
RDX: 0000000000080000 RSI: 00007ffe908b18f0 RDI: 00000000ffffff9c
RBP: 00007ffe908b18e0 R08: 00007ffe908b1ae7 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 000000000000001b
R13: 00007f4006391050 R14: 00007ffe908b1b00 R15: 0000000000000000