INFO: task syz.1.1563:11314 blocked for more than 143 seconds.
Not tainted 6.14.0-syzkaller-11125-g609706855d90 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1563 state:D stack:24480 pid:11314 tgid:11308 ppid:5841 task_flags:0x400140 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1b33/0x51f0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6860
io_schedule+0x8d/0x110 kernel/sched/core.c:7742
folio_wait_bit_common+0x83f/0xf00 mm/filemap.c:1329
__folio_lock mm/filemap.c:1676 [inline]
folio_lock include/linux/pagemap.h:1162 [inline]
__filemap_get_folio+0x147/0xb40 mm/filemap.c:1929
filemap_lock_folio include/linux/pagemap.h:800 [inline]
filemap_lock_hugetlb_folio include/linux/hugetlb.h:791 [inline]
hugetlbfs_zero_partial_page+0xb0/0x590 fs/hugetlbfs/inode.c:656
hugetlbfs_punch_hole fs/hugetlbfs/inode.c:710 [inline]
hugetlbfs_fallocate+0xbdc/0x11b0 fs/hugetlbfs/inode.c:743
vfs_fallocate+0x627/0x7a0 fs/open.c:338
madvise_remove mm/madvise.c:1034 [inline]
madvise_vma_behavior mm/madvise.c:1269 [inline]
madvise_walk_vmas mm/madvise.c:1511 [inline]
do_madvise+0x23f1/0x4e40 mm/madvise.c:1698
__do_sys_madvise mm/madvise.c:1714 [inline]
__se_sys_madvise mm/madvise.c:1712 [inline]
__x64_sys_madvise+0xa6/0xc0 mm/madvise.c:1712
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f99b7b8d169
RSP: 002b:00007f99b8a41038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f99b7da6080 RCX: 00007f99b7b8d169
RDX: 0000000000000009 RSI: 0000000000600002 RDI: 0000200000000000
RBP: 00007f99b7c0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f99b7da6080 R15: 00007fffa386de48
INFO: task syz.1.1563:11319 blocked for more than 144 seconds.
Not tainted 6.14.0-syzkaller-11125-g609706855d90 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1563 state:D stack:27816 pid:11319 tgid:11308 ppid:5841 task_flags:0x400040 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1b33/0x51f0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x6ff/0xa50 kernel/locking/rwsem.c:1526
i_mmap_lock_read include/linux/fs.h:565 [inline]
rmap_walk_file+0x69e/0x780 mm/rmap.c:2694
remove_migration_ptes mm/migrate.c:365 [inline]
unmap_and_move_huge_page mm/migrate.c:1516 [inline]
migrate_hugetlbs mm/migrate.c:1638 [inline]
migrate_pages+0xdc2/0x36c0 mm/migrate.c:2068
do_mbind mm/mempolicy.c:1425 [inline]
kernel_mbind mm/mempolicy.c:1568 [inline]
__do_sys_mbind mm/mempolicy.c:1642 [inline]
__se_sys_mbind+0x148d/0x1950 mm/mempolicy.c:1638
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f99b7b8d169
RSP: 002b:00007f99b8a20038 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007f99b7da6160 RCX: 00007f99b7b8d169
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000200000001000
RBP: 00007f99b7c0e2a0 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f99b7da6160 R15: 00007fffa386de48
INFO: task syz.1.1563:11318 blocked for more than 144 seconds.
Not tainted 6.14.0-syzkaller-11125-g609706855d90 #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1563 state:D stack:27560 pid:11318 tgid:11318 ppid:11314 task_flags:0x40004c flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1b33/0x51f0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
rwsem_down_write_slowpath+0xedd/0x1420 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1da/0x220 kernel/locking/rwsem.c:1578
hugetlb_zap_begin include/linux/hugetlb.h:252 [inline]
unmap_vmas+0x366/0x5f0 mm/memory.c:1990
exit_mmap+0x2bc/0xdd0 mm/mmap.c:1284
__mmput+0x115/0x410 kernel/fork.c:1360
exit_mm+0x221/0x310 kernel/exit.c:586
do_exit+0x994/0x2950 kernel/exit.c:941
__do_sys_exit kernel/exit.c:1070 [inline]
__se_sys_exit kernel/exit.c:1068 [inline]
__x64_sys_exit+0x40/0x40 kernel/exit.c:1068
x64_sys_call+0x26b1/0x26d0 arch/x86/include/generated/asm/syscalls_64.h:61
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f99b7b8d169
RSP: 002b:00007f99b8a40fe8 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 00007f99b7da6080 RCX: 00007f99b7b8d169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f99b7c0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f99b7da6080 R15: 00007fffa386de48
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8ed3b560 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8ed3b560 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8ed3b560 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x30/0x180 kernel/locking/lockdep.c:6764
3 locks held by kworker/u8:3/53:
#0: ffff88801bef3948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801bef3948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x990/0x18e0 kernel/workqueue.c:3319
#1: ffffc90000be7c60 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90000be7c60 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9cb/0x18e0 kernel/workqueue.c:3319
#2: ffffffff900d66d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x17c/0xd60 net/core/net_namespace.c:608
2 locks held by getty/5583:
#0: ffff888035e5a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000334b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x53d/0x16b0 drivers/tty/n_tty.c:2211
3 locks held by syz.1.1563/11314:
#0: ffff888144ea2420 (sb_writers#15){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3041 [inline]
#0: ffff888144ea2420 (sb_writers#15){.+.+}-{0:0}, at: vfs_fallocate+0x5a1/0x7a0 fs/open.c:337
#1: ffff88807e951588 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff88807e951588 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:685 [inline]
#1: ffff88807e951588 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hugetlbfs_fallocate+0x412/0x11b0 fs/hugetlbfs/inode.c:743
#2: ffff88807e951858 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_write include/linux/fs.h:545 [inline]
#2: ffff88807e951858 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:693 [inline]
#2: ffff88807e951858 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_fallocate+0x4d8/0x11b0 fs/hugetlbfs/inode.c:743
1 lock held by syz.1.1563/11319:
#0: ffff88807e951858 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_read include/linux/fs.h:565 [inline]
#0: ffff88807e951858 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: rmap_walk_file+0x69e/0x780 mm/rmap.c:2694
3 locks held by syz.1.1563/11318:
#0: ffff88807ed13c60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:190 [inline]
#0: ffff88807ed13c60 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x176/0xdd0 mm/mmap.c:1269
#1: ffff888024fe9978 (&vma_lock->rw_sema){++++}-{4:4}, at: hugetlb_vma_lock_write mm/hugetlb.c:-1 [inline]
#1: ffff888024fe9978 (&vma_lock->rw_sema){++++}-{4:4}, at: __hugetlb_zap_begin+0x338/0x3c0 mm/hugetlb.c:5720
#2: ffff88807e951858 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlb_zap_begin include/linux/hugetlb.h:252 [inline]
#2: ffff88807e951858 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: unmap_vmas+0x366/0x5f0 mm/memory.c:1990
4 locks held by syz.2.2326/13506:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-syzkaller-11125-g609706855d90 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x4ab/0x4e0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
watchdog+0x1058/0x10a0 kernel/hung_task.c:399
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
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: 5997 Comm: kworker/u8:11 Not tainted 6.14.0-syzkaller-11125-g609706855d90 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:lock_acquire+0x17/0x2f0 kernel/locking/lockdep.c:5826
Code: 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 40 4c 89 4c 24 08 <45> 89 c4 41 89 cd 41 89 d7 89 74 24 04 48 89 fb 48 c7 c5 20 b0 63
RSP: 0018:ffffc90004e86f88 EFLAGS: 00000286
RAX: 0000000000000001 RBX: 1ffff920009d0e1c RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8ed3b560
RBP: ffffc90004e87118 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90004e87130 R11: ffffffff81aedf20 R12: ffffc90004e870e0
R13: dffffc0000000000 R14: ffffffff821e52ee R15: ffffffff816dfb38
FS: 0000000000000000(0000) GS:ffff8881250e5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa02137b338 CR3: 000000007c9f4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0xd5/0x23b0 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x11e/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x9d/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4318 [inline]
__kmalloc_noprof+0x28e/0x4d0 mm/slub.c:4330
kmalloc_noprof include/linux/slab.h:906 [inline]
kzalloc_noprof include/linux/slab.h:1036 [inline]
ieee802_11_parse_elems_full+0x16d/0x2f10 net/mac80211/parse.c:1013
ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2402 [inline]
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2409 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1577 [inline]
ieee80211_ibss_rx_queued_mgmt+0x4e6/0x2e20 net/mac80211/ibss.c:1608
ieee80211_iface_process_skb net/mac80211/iface.c:1622 [inline]
ieee80211_iface_work+0x933/0x1100 net/mac80211/iface.c:1676
cfg80211_wiphy_work+0x2f0/0x490 net/wireless/core.c:435
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd50 kernel/workqueue.c:3400
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245