INFO: task syz-executor.0:5385 blocked for more than 143 seconds.
Not tainted 6.6.0-rc7-syzkaller-00041-g611da07b89fd-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:20040 pid:5385 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
io_schedule+0x8c/0x100 kernel/sched/core.c:9026
folio_wait_bit_common+0x881/0x12a0 mm/filemap.c:1301
folio_wait_writeback+0xe7/0x1e0 mm/page-writeback.c:3068
shrink_folio_list+0x529b/0x8870 mm/vmscan.c:1853
shrink_inactive_list mm/vmscan.c:2614 [inline]
shrink_list mm/vmscan.c:2855 [inline]
shrink_lruvec+0x16e6/0x2d30 mm/vmscan.c:6319
shrink_node_memcgs mm/vmscan.c:6505 [inline]
shrink_node+0x1176/0x28c0 mm/vmscan.c:6540
shrink_zones mm/vmscan.c:6779 [inline]
do_try_to_free_pages+0x717/0x19e0 mm/vmscan.c:6841
try_to_free_mem_cgroup_pages+0x455/0xa50 mm/vmscan.c:7156
try_charge_memcg+0x6d9/0x18a0 mm/memcontrol.c:2691
try_charge mm/memcontrol.c:2833 [inline]
charge_memcg+0x11a/0x3f0 mm/memcontrol.c:6996
mem_cgroup_swapin_charge_folio+0x25d/0x380 mm/memcontrol.c:7052
__read_swap_cache_async+0x4fb/0xdf0 mm/swap_state.c:488
swap_cluster_readahead+0x3b5/0x780 mm/swap_state.c:650
swapin_readahead+0x118/0xbd0 mm/swap_state.c:858
do_swap_page+0x6ff/0x4250 mm/memory.c:3825
handle_pte_fault mm/memory.c:4984 [inline]
__handle_mm_fault mm/memory.c:5122 [inline]
handle_mm_fault+0x160a/0x62b0 mm/memory.c:5287
do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
handle_page_fault arch/x86/mm/fault.c:1505 [inline]
exc_page_fault+0x455/0x860 arch/x86/mm/fault.c:1561
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f5a550a7ef8
RSP: 002b:00007ffc33ed8980 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 000000000000005d RCX: 00007f5a550a7ef5
RDX: 00007ffc33ed89c0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffc33ed8a4c R08: 0000000000000000 R09: 00007ffc33f160b0
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 0000000000033d55 R14: 0000000000033a09 R15: 0000000000000004
INFO: task syz-executor.0:5836 blocked for more than 143 seconds.
Not tainted 6.6.0-rc7-syzkaller-00041-g611da07b89fd-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:21992 pid:5836 ppid:5385 flags:0x00104006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
io_schedule+0x8c/0x100 kernel/sched/core.c:9026
folio_wait_bit_common+0x881/0x12a0 mm/filemap.c:1301
folio_wait_writeback+0xe7/0x1e0 mm/page-writeback.c:3068
shrink_folio_list+0x529b/0x8870 mm/vmscan.c:1853
shrink_inactive_list mm/vmscan.c:2614 [inline]
shrink_list mm/vmscan.c:2855 [inline]
shrink_lruvec+0x16e6/0x2d30 mm/vmscan.c:6319
shrink_node_memcgs mm/vmscan.c:6505 [inline]
shrink_node+0x1176/0x28c0 mm/vmscan.c:6540
shrink_zones mm/vmscan.c:6779 [inline]
do_try_to_free_pages+0x717/0x19e0 mm/vmscan.c:6841
try_to_free_mem_cgroup_pages+0x455/0xa50 mm/vmscan.c:7156
try_charge_memcg+0x6d9/0x18a0 mm/memcontrol.c:2691
obj_cgroup_charge_pages mm/memcontrol.c:3105 [inline]
__memcg_kmem_charge_page+0x248/0x3b0 mm/memcontrol.c:3131
__alloc_pages+0x28b/0x670 mm/page_alloc.c:4443
__alloc_pages_node include/linux/gfp.h:237 [inline]
alloc_pages_node include/linux/gfp.h:260 [inline]
bpf_ringbuf_area_alloc kernel/bpf/ringbuf.c:122 [inline]
bpf_ringbuf_alloc+0xcb/0x420 kernel/bpf/ringbuf.c:170
ringbuf_map_alloc+0x1d3/0x2f0 kernel/bpf/ringbuf.c:204
map_create+0x849/0x1040 kernel/bpf/syscall.c:1207
__sys_bpf+0x6a2/0x810 kernel/bpf/syscall.c:5326
__do_sys_bpf kernel/bpf/syscall.c:5448 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5446 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5446
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5a5507cae9
RSP: 002b:00007f5a55eb40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f5a5519bf80 RCX: 00007f5a5507cae9
RDX: 0000000000000048 RSI: 0000000020000cc0 RDI: 0000000000000000
RBP: 00007f5a550c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5a5519bf80 R15: 00007ffc33ed86d8
Showing all locks held in the system:
4 locks held by kworker/u4:1/12:
#0: ffff8880287a2d38 ((wq_completion)loop0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#0: ffff8880287a2d38 ((wq_completion)loop0){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#1: ffffc90000117d20 ((work_completion)(&lo->rootcg_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc90000117d20 ((work_completion)(&lo->rootcg_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#2: ffff88801467a410 (sb_writers#5){.+.+}-{0:0}, at: process_one_work kernel/workqueue.c:2630 [inline]
#2: ffff88801467a410 (sb_writers#5){.+.+}-{0:0}, at: process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
#3: ffff888062f337e0 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#3: ffff888062f337e0 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: shmem_file_write_iter+0x83/0x120 mm/shmem.c:2855
1 lock held by khungtaskd/29:
#0: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by getty/4782:
#0: ffff88802665d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2206
1 lock held by syz-executor.0/5385:
#0: ffff8880283e8730 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:665 [inline]
#0: ffff8880283e8730 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f6/0x6f0 mm/memory.c:5443
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc7-syzkaller-00041-g611da07b89fd-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 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+0xfa9/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 138 Comm: kworker/u4:5 Not tainted 6.6.0-rc7-syzkaller-00041-g611da07b89fd-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:236 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x34/0x80 kernel/kcov.c:311
Code: 8b 0d 10 a7 75 7e 65 8b 05 11 a7 75 7e a9 00 01 ff 00 74 10 a9 00 01 00 00 74 57 83 b9 04 16 00 00 00 74 4e 8b 81 e0 15 00 00 <83> f8 03 75 43 48 8b 91 e8 15 00 00 44 8b 89 e4 15 00 00 49 c1 e1
RSP: 0018:ffffc90002dff678 EFLAGS: 00000246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888016f03b80
RDX: 0000000012867558 RSI: 0000000012867067 RDI: 0000000000000000
RBP: ffffc90002dff770 R08: ffffffff81d8a3c5 R09: 1ffffffff20df270
R10: dffffc0000000000 R11: fffffbfff20df271 R12: 1ffff920005bfed8
R13: ffff888012865aa8 R14: 0000000012867067 R15: 1ffff920005bfee0
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561249338680 CR3: 000000000d130000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__pte_needs_invert arch/x86/include/asm/pgtable-invert.h:18 [inline]
protnone_mask arch/x86/include/asm/pgtable-invert.h:24 [inline]
pmd_pfn arch/x86/include/asm/pgtable.h:233 [inline]
pte_lockptr include/linux/mm.h:2874 [inline]
__pte_offset_map_lock+0x135/0x300 mm/pgtable-generic.c:372
get_locked_pte include/linux/mm.h:2664 [inline]
__text_poke+0x2c5/0xcd0 arch/x86/kernel/alternative.c:1820
text_poke arch/x86/kernel/alternative.c:1905 [inline]
text_poke_bp_batch+0x8c9/0xb20 arch/x86/kernel/alternative.c:2294
text_poke_flush arch/x86/kernel/alternative.c:2407 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2414
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x132/0x250 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:830
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304