INFO: task syz.2.38:6817 blocked for more than 143 seconds.
Not tainted 6.14.0-rc3-syzkaller-g2408a807bfc3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.38 state:D stack:27120 pid:6817 tgid:6814 ppid:6602 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1526
i_mmap_lock_read include/linux/fs.h:564 [inline]
rmap_walk_file+0x54b/0x690 mm/rmap.c:2694
rmap_walk+0x7a/0xd0 mm/rmap.c:2726
remove_migration_ptes+0x11e/0x1b0 mm/migrate.c:365
unmap_and_move_huge_page mm/migrate.c:1518 [inline]
migrate_hugetlbs mm/migrate.c:1640 [inline]
migrate_pages+0xa0e/0x2290 mm/migrate.c:2070
do_mbind+0x6c0/0xed0 mm/mempolicy.c:1394
kernel_mbind+0x1e8/0x200 mm/mempolicy.c:1537
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f132938cda9
RSP: 002b:00007f132a24c038 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007f13295a5fa0 RCX: 00007f132938cda9
RDX: 0000000100000000 RSI: 0000000100000004 RDI: 0000000000000000
RBP: 00007f132940e2a0 R08: 0000000000000006 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f13295a5fa0 R15: 00007fffe2b75ab8
INFO: task syz.2.38:6821 blocked for more than 143 seconds.
Not tainted 6.14.0-rc3-syzkaller-g2408a807bfc3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.38 state:D stack:28512 pid:6821 tgid:6814 ppid:6602 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6857
io_schedule+0xbf/0x130 kernel/sched/core.c:7690
folio_wait_bit_common+0x3d8/0x9b0 mm/filemap.c:1318
__folio_lock mm/filemap.c:1665 [inline]
folio_lock include/linux/pagemap.h:1163 [inline]
folio_lock include/linux/pagemap.h:1159 [inline]
__filemap_get_folio+0x77c/0xbd0 mm/filemap.c:1918
filemap_lock_folio include/linux/pagemap.h:800 [inline]
filemap_lock_hugetlb_folio include/linux/hugetlb.h:790 [inline]
hugetlbfs_zero_partial_page+0xaf/0x520 fs/hugetlbfs/inode.c:656
hugetlbfs_punch_hole fs/hugetlbfs/inode.c:697 [inline]
hugetlbfs_fallocate+0xe84/0x11d0 fs/hugetlbfs/inode.c:743
vfs_fallocate+0x60d/0x10d0 fs/open.c:338
madvise_remove mm/madvise.c:1025 [inline]
madvise_vma_behavior+0x1c8b/0x1dd0 mm/madvise.c:1260
madvise_walk_vmas+0x1cf/0x2c0 mm/madvise.c:1502
do_madvise+0x366/0x7c0 mm/madvise.c:1689
__do_sys_madvise mm/madvise.c:1705 [inline]
__se_sys_madvise mm/madvise.c:1703 [inline]
__x64_sys_madvise+0xa9/0x110 mm/madvise.c:1703
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f132938cda9
RSP: 002b:00007f132a22b038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f13295a6080 RCX: 00007f132938cda9
RDX: 0000000000000009 RSI: 0000000000800034 RDI: 0000000000108000
RBP: 00007f132940e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f13295a6080 R15: 00007fffe2b75ab8
INFO: task syz.2.38:6825 blocked for more than 144 seconds.
Not tainted 6.14.0-rc3-syzkaller-g2408a807bfc3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.38 state:D stack:28656 pid:6825 tgid:6814 ppid:6602 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6857
io_schedule+0xbf/0x130 kernel/sched/core.c:7690
migration_entry_wait_on_locked+0x70a/0x880 mm/filemap.c:1440
migration_entry_wait_huge+0x2e4/0x3f0 mm/migrate.c:428
hugetlb_fault+0x238d/0x2fa0 mm/hugetlb.c:6427
handle_mm_fault+0x930/0xaa0 mm/memory.c:6199
do_user_addr_fault+0x7a3/0x13f0 arch/x86/mm/fault.c:1388
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:do_strncpy_from_user lib/strncpy_from_user.c:41 [inline]
RIP: 0010:strncpy_from_user+0x148/0x2d0 lib/strncpy_from_user.c:130
Code: 00 00 48 83 ed 08 4d 89 74 1d 00 bf 07 00 00 00 48 83 c3 08 48 89 ee e8 16 52 c8 fc 48 83 fd 07 76 22 e8 db 56 c8 fc 45 31 ff <49> 8b 04 1c 31 ff 44 89 fe 49 89 c6 e8 c7 51 c8 fc 45 85 ff 0f 84
RSP: 0018:ffffc900036bfd18 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff84f186c6
RDX: ffff88802a673c00 RSI: ffffffff84f18765 RDI: 0000000000000007
RBP: 0000000000000fe0 R08: 0000000000000007 R09: 0000000000000007
R10: 0000000000000fe0 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88807d641120 R14: 0000000000000fe0 R15: 0000000000000000
getname_flags.part.0+0x8f/0x550 fs/namei.c:150
getname_flags include/linux/audit.h:322 [inline]
getname+0x8d/0xe0 fs/namei.c:223
do_sys_openat2+0x104/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1454
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f132938cda9
RSP: 002b:00007f132a20a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f13295a6160 RCX: 00007f132938cda9
RDX: 0000000000000062 RSI: 0000000000000000 RDI: ffffffffffffff9c
RBP: 00007f132940e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f13295a6160 R15: 00007fffe2b75ab8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e1bcc80 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1bcc80 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1bcc80 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6746
3 locks held by kworker/u8:5/728:
2 locks held by getty/5588:
#0: ffff8880311020a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900033132f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
1 lock held by syz.2.38/6817:
#0: ffff888144ea7bc8 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_read include/linux/fs.h:564 [inline]
#0: ffff888144ea7bc8 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: rmap_walk_file+0x54b/0x690 mm/rmap.c:2694
3 locks held by syz.2.38/6821:
#0: ffff888144aea420 (sb_writers#13){.+.+}-{0:0}, at: madvise_remove mm/madvise.c:1025 [inline]
#0: ffff888144aea420 (sb_writers#13){.+.+}-{0:0}, at: madvise_vma_behavior+0x1c8b/0x1dd0 mm/madvise.c:1260
#1: ffff888144ea78f8 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline]
#1: ffff888144ea78f8 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:685 [inline]
#1: ffff888144ea78f8 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hugetlbfs_fallocate+0xc1f/0x11d0 fs/hugetlbfs/inode.c:743
#2: ffff888144ea7bc8 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_write include/linux/fs.h:544 [inline]
#2: ffff888144ea7bc8 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:693 [inline]
#2: ffff888144ea7bc8 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_fallocate+0xc8c/0x11d0 fs/hugetlbfs/inode.c:743
1 lock held by syz.2.38/6825:
#0: ffff888033ef65e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_trylock include/linux/mmap_lock.h:209 [inline]
#0: ffff888033ef65e0 (&mm->mmap_lock){++++}-{4:4}, at: get_mmap_lock_carefully mm/memory.c:6238 [inline]
#0: ffff888033ef65e0 (&mm->mmap_lock){++++}-{4:4}, at: lock_mm_and_find_vma+0x35/0x6e0 mm/memory.c:6298
1 lock held by syz.1.4564/18143:
#0: ffffffff8e1c80f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:302
1 lock held by syz.3.4566/18146:
#0: ffffffff8e1c80f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:334
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc3-syzkaller-g2408a807bfc3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
watchdog+0xf62/0x12b0 kernel/hung_task.c:399
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
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: 63 Comm: kworker/u8:4 Not tainted 6.14.0-rc3-syzkaller-g2408a807bfc3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:do_raw_spin_lock+0xe/0x2c0 kernel/locking/spinlock_debug.c:114
Code: 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df <41> 56 41 55 41 54 55 53 48 89 fb 48 83 c7 04 48 83 ec 68 48 c7 44
RSP: 0018:ffffc90001547978 EFLAGS: 00000086
RAX: dffffc0000000000 RBX: ffffffff9aa74e78 RCX: ffffffff8195b4ce
RDX: 0000000000000001 RSI: ffffffff8b6cefa0 RDI: ffffffff9aa74e78
RBP: 0000000000000282 R08: 0000000000000000 R09: fffffbfff2dd7998
R10: ffffffff96ebccc7 R11: 0000000000000003 R12: ffffffff9aa74e70
R13: 0000000000001026 R14: 0000000000000000 R15: ffff88805cfbc000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f35ffff CR3: 0000000030b68000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0x42/0x60 kernel/locking/spinlock.c:162
__debug_check_no_obj_freed lib/debugobjects.c:1088 [inline]
debug_check_no_obj_freed+0x1cf/0x600 lib/debugobjects.c:1129
slab_free_hook mm/slub.c:2284 [inline]
slab_free mm/slub.c:4609 [inline]
kmem_cache_free+0x2bd/0x4d0 mm/slub.c:4711
kfree_skbmem+0x1a4/0x1f0 net/core/skbuff.c:1148
__kfree_skb net/core/skbuff.c:1205 [inline]
sk_skb_reason_drop+0x136/0x1a0 net/core/skbuff.c:1242
kfree_skb_reason include/linux/skbuff.h:1271 [inline]
kfree_skb include/linux/skbuff.h:1280 [inline]
ieee80211_iface_work+0x437/0xf50 net/mac80211/iface.c:1667
cfg80211_wiphy_work+0x3ed/0x570 net/wireless/core.c:435
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3317 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244