INFO: task syz.1.3292:16132 blocked for more than 143 seconds.
Not tainted 6.11.0-rc2-syzkaller-00111-gee9a43b7cfe2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.3292 state:D stack:27168 pid:16132 tgid:16132 ppid:12663 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
hugetlb_wp+0x1e16/0x2980 mm/hugetlb.c:6027
hugetlb_fault+0x1f28/0x27c0 mm/hugetlb.c:6579
handle_mm_fault+0x72a/0x7b0 mm/memory.c:5831
do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f9b7bc4b1d0
RSP: 002b:00007ffdd29ee960 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffffff7fffff
RDX: d5b187fc628e3943 RSI: 0000000020800000 RDI: 00005555932163c8
RBP: 00007ffdd29eea30 R08: 00007f9b7bc00000 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000003 R12: 0000000000000032
R13: 00007ffdd29eea50 R14: 00007ffdd29eea70 R15: fffffffffffffffe
INFO: task syz.1.3292:16134 blocked for more than 144 seconds.
Not tainted 6.11.0-rc2-syzkaller-00111-gee9a43b7cfe2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.3292 state:D stack:28480 pid:16134 tgid:16132 ppid:12663 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
io_schedule+0xbf/0x130 kernel/sched/core.c:7401
folio_wait_bit_common+0x3d8/0x9b0 mm/filemap.c:1307
__folio_lock mm/filemap.c:1645 [inline]
folio_lock include/linux/pagemap.h:1050 [inline]
folio_lock include/linux/pagemap.h:1046 [inline]
__filemap_get_folio+0x6ab/0xae0 mm/filemap.c:1898
filemap_lock_folio include/linux/pagemap.h:690 [inline]
filemap_lock_hugetlb_folio include/linux/hugetlb.h:795 [inline]
hugetlb_fault+0x16d4/0x27c0 mm/hugetlb.c:6531
handle_mm_fault+0x72a/0x7b0 mm/memory.c:5831
do_user_addr_fault+0x7a3/0x13f0 arch/x86/mm/fault.c:1389
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:rep_movs_alternative+0x33/0x70 arch/x86/lib/copy_user_64.S:58
Code: 40 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 48 8b 06 <48> 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb
RSP: 0018:ffffc9000380fc48 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000008
RDX: fffff52000701f98 RSI: ffffc9000380fcb8 RDI: 000000002001e9f0
RBP: 000000002001e9f0 R08: 0000000000000000 R09: fffff52000701f97
R10: ffffc9000380fcbf R11: 0000000000000000 R12: ffffc9000380fcb8
R13: 000000002001e9f8 R14: 0000000000000000 R15: 0000000020019680
copy_user_generic arch/x86/include/asm/uaccess_64.h:110 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:131 [inline]
_inline_copy_to_user include/linux/uaccess.h:181 [inline]
_copy_to_user+0xac/0xc0 lib/usercopy.c:26
copy_to_user include/linux/uaccess.h:209 [inline]
msr_read+0x155/0x250 arch/x86/kernel/msr.c:69
vfs_read+0x1d4/0xbd0 fs/read_write.c:474
ksys_read+0x12f/0x260 fs/read_write.c:619
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: 0033:0x7f9b7bd779f9
RSP: 002b:00007f9b7cb27038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f9b7bf05f80 RCX: 00007f9b7bd779f9
RDX: 0000000000018ff8 RSI: 0000000020019680 RDI: 0000000000000004
RBP: 00007f9b7bde58ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9b7bf05f80 R15: 00007ffdd29ee7f8
Showing all locks held in the system:
5 locks held by kworker/0:1/9:
#0: ffff888018aef548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc900000e7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffff888023a26190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#2: ffff888023a26190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e20 drivers/usb/core/hub.c:5849
#3: ffff888024dec190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#3: ffff888024dec190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1004
#4: ffff888047b63160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#4: ffff888047b63160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1004
1 lock held by khungtaskd/30:
#0: ffffffff8ddb5ca0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8ddb5ca0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8ddb5ca0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6626
2 locks held by getty/4977:
#0: ffff88802ad450a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211
3 locks held by kworker/u9:4/5227:
#0: ffff88807df78148 ((wq_completion)hci8){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc900032cfd80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffff8880764fcd80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x170/0x410 net/bluetooth/hci_sync.c:327
2 locks held by syz.1.3292/16132:
#0: ffff888066e90658 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:690 [inline]
#0: ffff888066e90658 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x1e2/0x8f0 mm/memory.c:5999
#1: ffff888019ad23c8 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: hugetlb_wp+0x1e16/0x2980 mm/hugetlb.c:6027
3 locks held by syz.1.3292/16134:
#0: ffff888079671e18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:153 [inline]
#0: ffff888079671e18 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5879 [inline]
#0: ffff888079671e18 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x3a9/0x6a0 mm/memory.c:5930
#1: ffff888019ad23c8 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: hugetlb_fault+0x313/0x27c0 mm/hugetlb.c:6451
#2: ffff88807f6ad8e8 (&resv_map->rw_sema){++++}-{3:3}, at: hugetlb_vma_lock_read mm/hugetlb.c:275 [inline]
#2: ffff88807f6ad8e8 (&resv_map->rw_sema){++++}-{3:3}, at: hugetlb_vma_lock_read+0x105/0x140 mm/hugetlb.c:266
2 locks held by syz.0.3316/16226:
#0: ffff8880660e0b18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:163 [inline]
#0: ffff8880660e0b18 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5870 [inline]
#0: ffff8880660e0b18 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x35/0x6a0 mm/memory.c:5930
#1: ffff888019ad23c8 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: hugetlb_fault+0x313/0x27c0 mm/hugetlb.c:6451
3 locks held by syz.2.3323/16257:
#0: ffff88801d6c6420 (sb_writers#15){.+.+}-{0:0}, at: ksys_fallocate fs/open.c:357 [inline]
#0: ffff88801d6c6420 (sb_writers#15){.+.+}-{0:0}, at: __do_sys_fallocate fs/open.c:365 [inline]
#0: ffff88801d6c6420 (sb_writers#15){.+.+}-{0:0}, at: __se_sys_fallocate fs/open.c:363 [inline]
#0: ffff88801d6c6420 (sb_writers#15){.+.+}-{0:0}, at: __x64_sys_fallocate+0xd5/0x140 fs/open.c:363
#1: ffff88802ca9cb68 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:799 [inline]
#1: ffff88802ca9cb68 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: hugetlbfs_fallocate+0x2bc/0xfc0 fs/hugetlbfs/inode.c:828
#2: ffff888019ad23c8 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: hugetlbfs_fallocate+0x57d/0xfc0 fs/hugetlbfs/inode.c:872
3 locks held by syz.1.3313/16308:
#0: ffff88801d6c6420 (sb_writers#15){.+.+}-{0:0}, at: ksys_fallocate fs/open.c:357 [inline]
#0: ffff88801d6c6420 (sb_writers#15){.+.+}-{0:0}, at: __do_sys_fallocate fs/open.c:365 [inline]
#0: ffff88801d6c6420 (sb_writers#15){.+.+}-{0:0}, at: __se_sys_fallocate fs/open.c:363 [inline]
#0: ffff88801d6c6420 (sb_writers#15){.+.+}-{0:0}, at: __x64_sys_fallocate+0xd5/0x140 fs/open.c:363
#1: ffff88802ca9d078 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:799 [inline]
#1: ffff88802ca9d078 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: hugetlbfs_fallocate+0x2bc/0xfc0 fs/hugetlbfs/inode.c:828
#2: ffff888019ad23c8 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: hugetlbfs_fallocate+0x57d/0xfc0 fs/hugetlbfs/inode.c:872
2 locks held by syz.4.3343/16356:
#0: ffff88807e918220 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:690 [inline]
#0: ffff88807e918220 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x1e2/0x8f0 mm/memory.c:5999
#1: ffff888019ad23c8 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: hugetlb_fault+0x313/0x27c0 mm/hugetlb.c:6451
2 locks held by syz.1.3346/16511:
#0: ffff88802acdd2f8 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:690 [inline]
#0: ffff88802acdd2f8 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x1e2/0x8f0 mm/memory.c:5999
#1: ffff888019ad23c8 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: hugetlb_fault+0x313/0x27c0 mm/hugetlb.c:6451
2 locks held by kworker/u8:12/16970:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc2-syzkaller-00111-gee9a43b7cfe2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
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:223 [inline]
watchdog+0xf4e/0x1280 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 16970 Comm: kworker/u8:12 Not tainted 6.11.0-rc2-syzkaller-00111-gee9a43b7cfe2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4798 [inline]
RIP: 0010:__lock_acquire+0x628/0x3cb0 kernel/locking/lockdep.c:5092
Code: 98 00 00 00 48 69 c5 c8 00 00 00 48 05 e0 da 62 94 48 8d b8 c4 00 00 00 48 89 f9 48 89 fe 48 c1 e9 03 83 e6 07 42 0f b6 0c 21 <40> 38 f1 7f 08 84 c9 0f 85 c8 22 00 00 0f b6 88 c4 00 00 00 84 c9
RSP: 0018:ffffc900040a7950 EFLAGS: 00000002
RAX: ffffffff946848b8 RBX: ffffed10033e751b RCX: 0000000000000000
RDX: fffffbfff28c5af4 RSI: 0000000000000004 RDI: ffffffff9468497c
RBP: 00000000000006f3 R08: 0000000000000000 R09: fffffbfff28c5af3
R10: ffffffff9462d79f R11: 0000000000000002 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000004 R15: ffff888019f39e00
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020089000 CR3: 0000000079a78000 CR4: 00000000003506f0
DR0: 0000000000001002 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5759 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x16e/0x10f0 net/batman-adv/network-coding.c:719
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244