INFO: task syz.6.1798:13970 blocked for more than 143 seconds.
Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.1798 state:D stack:27824 pid:13970 tgid:13969 ppid:10205 task_flags:0x400140 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
io_schedule+0xbf/0x130 kernel/sched/core.c:7689
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+0xe70/0x11b0 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: 0033:0x7f8f9b78cda9
RSP: 002b:00007f8f9c5f5038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f8f9b9a5fa0 RCX: 00007f8f9b78cda9
RDX: 0000000000000009 RSI: 0000000000800034 RDI: 0000000000108000
RBP: 00007f8f9b80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8f9b9a5fa0 R15: 00007ffc3f83efd8
INFO: task syz.6.1798:13971 blocked for more than 144 seconds.
Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.1798 state:D stack:28288 pid:13971 tgid:13969 ppid:10205 task_flags:0x400040 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
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:565 [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+0x6cb/0xec0 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: 0033:0x7f8f9b78cda9
RSP: 002b:00007f8f9c5d4038 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007f8f9b9a6080 RCX: 00007f8f9b78cda9
RDX: 0000000100000000 RSI: 0000000100000004 RDI: 0000000000000000
RBP: 00007f8f9b80e2a0 R08: 0000000000000006 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8f9b9a6080 R15: 00007ffc3f83efd8
INFO: task syz.6.1798:13973 blocked for more than 145 seconds.
Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.1798 state:D stack:28432 pid:13973 tgid:13969 ppid:10205 task_flags:0x400140 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
io_schedule+0xbf/0x130 kernel/sched/core.c:7689
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: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:ffffc9000509faf8 EFLAGS: 00050202
RAX: 3135393035363031 RBX: 0000000000000000 RCX: 0000000000000009
RDX: ffffed1004ab6802 RSI: ffff8880255b4000 RDI: 0000000000000000
RBP: ffffc9000509fda0 R08: 0000000000000000 R09: ffffed1004ab6801
R10: ffff8880255b4008 R11: 0000000000000002 R12: 0000000000000009
R13: 00007ffffffff000 R14: ffff8880255b4000 R15: 0000000000000009
copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:147 [inline]
copy_to_user_iter lib/iov_iter.c:25 [inline]
iterate_ubuf include/linux/iov_iter.h:30 [inline]
iterate_and_advance2 include/linux/iov_iter.h:300 [inline]
iterate_and_advance include/linux/iov_iter.h:328 [inline]
_copy_to_iter+0x384/0x1400 lib/iov_iter.c:185
copy_to_iter include/linux/uio.h:220 [inline]
seq_read_iter+0xd00/0x12b0 fs/seq_file.c:281
kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x886/0xbf0 fs/read_write.c:565
ksys_read+0x12b/0x250 fs/read_write.c:708
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: 0033:0x7f8f9b78cda9
RSP: 002b:00007f8f9c5b3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f8f9b9a6160 RCX: 00007f8f9b78cda9
RDX: 0000000000000009 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f8f9b80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8f9b9a6160 R15: 00007ffc3f83efd8
Showing all locks held in the system:
3 locks held by kworker/0:1/9:
1 lock held by khungtaskd/30:
#0: ffffffff8e1bc080 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1bc080 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1bc080 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6746
2 locks held by kworker/u8:3/51:
#0: ffff8880207f0948 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_one_work+0x12cd/0x1b30 kernel/workqueue.c:3211
#1: ffffc90000bc7d18 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3212
3 locks held by kworker/1:2/3076:
#0: ffff88801b080d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12cd/0x1b30 kernel/workqueue.c:3211
#1: ffffc9000c817d18 ((fqdir_free_work).work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3212
#2: ffffffff8e1c73c0 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x48/0x700 kernel/rcu/tree.c:3741
4 locks held by kworker/u8:30/9370:
#0: ffff88801bef5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x12cd/0x1b30 kernel/workqueue.c:3211
#1: ffffc90005927d18 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3212
#2: ffffffff8fec0c10 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xca/0xbf0 net/core/net_namespace.c:606
#3: ffffffff8e1c74f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:302
3 locks held by syz.6.1798/13970:
#0: ffff888144afc420 (sb_writers#14){.+.+}-{0:0}, at: madvise_remove mm/madvise.c:1025 [inline]
#0: ffff888144afc420 (sb_writers#14){.+.+}-{0:0}, at: madvise_vma_behavior+0x1c8b/0x1dd0 mm/madvise.c:1260
#1: ffff888145299078 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:865 [inline]
#1: ffff888145299078 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:685 [inline]
#1: ffff888145299078 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hugetlbfs_fallocate+0xc0b/0x11b0 fs/hugetlbfs/inode.c:743
#2: ffff888145299348 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_write include/linux/fs.h:545 [inline]
#2: ffff888145299348 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:693 [inline]
#2: ffff888145299348 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_fallocate+0xc78/0x11b0 fs/hugetlbfs/inode.c:743
1 lock held by syz.6.1798/13971:
#0: ffff888145299348 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_read include/linux/fs.h:565 [inline]
#0: ffff888145299348 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: rmap_walk_file+0x54b/0x690 mm/rmap.c:2694
3 locks held by syz.6.1798/13973:
#0: ffff88806d082ef8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x267/0x390 fs/file.c:1192
#1: ffff8880324bf2f0 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
#2: ffff8880336347e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_trylock include/linux/mmap_lock.h:209 [inline]
#2: ffff8880336347e0 (&mm->mmap_lock){++++}-{4:4}, at: get_mmap_lock_carefully mm/memory.c:6238 [inline]
#2: ffff8880336347e0 (&mm->mmap_lock){++++}-{4:4}, at: lock_mm_and_find_vma+0x35/0x6e0 mm/memory.c:6298
2 locks held by getty/15226:
#0: ffff8880318520a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc9000b3952f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
2 locks held by syz.1.2238/16216:
#0: ffffffff8fec0c10 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x292/0x6c0 net/core/net_namespace.c:512
#1: ffffffff8e1c73c0 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x48/0x700 kernel/rcu/tree.c:3741
1 lock held by syz.7.2255/16295:
#0: ffffffff8fec0c10 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x292/0x6c0 net/core/net_namespace.c:512
1 lock held by syz.3.2256/16297:
#0: ffffffff8e1c73c0 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x48/0x700 kernel/rcu/tree.c:3741
1 lock held by dhcpcd/16306:
#0: ffff88807e21c258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1624 [inline]
#0: ffff88807e21c258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2c/0xf60 net/packet/af_packet.c:3253
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 9643 Comm: vivid-010-vid-o Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:469 [inline]
RIP: 0010:lock_is_held_type+0xec/0x150 kernel/locking/lockdep.c:5924
Code: f6 43 22 03 0f 95 c0 45 31 ed 44 39 f0 41 0f 94 c5 48 c7 c7 c0 e8 6c 8b e8 91 16 00 00 b8 ff ff ff ff 65 0f c1 05 6c 5b bc 74 <83> f8 01 75 2d 9c 58 f6 c4 02 75 43 48 f7 04 24 00 02 00 00 74 01
RSP: 0018:ffffc90000007618 EFLAGS: 00000057
RAX: 0000000000000001 RBX: ffff8880278364f0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b6ce8c0 RDI: ffffffff8bd2c380
RBP: ffffffff8fed6be8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888027835a00
R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005589aa891e00 CR3: 000000000df80000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:249 [inline]
lockdep_rtnl_is_held+0x1b/0x40 net/core/rtnetlink.c:176
__in6_dev_get include/net/addrconf.h:347 [inline]
br_validate_ipv6+0x32d/0x730 net/bridge/br_netfilter_ipv6.c:46
br_nf_pre_routing_ipv6+0xa7/0x8c0 net/bridge/br_netfilter_ipv6.c:169
br_nf_pre_routing+0x860/0x15b0 net/bridge/br_netfilter_hooks.c:508
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:282 [inline]
br_handle_frame+0xa81/0x14c0 net/bridge/br_input.c:433
__netif_receive_skb_core.constprop.0+0xa20/0x4330 net/core/dev.c:5722
__netif_receive_skb_one_core+0xb1/0x1e0 net/core/dev.c:5826
__netif_receive_skb+0x1d/0x160 net/core/dev.c:5941
process_backlog+0x443/0x15f0 net/core/dev.c:6289
__napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:7106
napi_poll net/core/dev.c:7175 [inline]
net_rx_action+0xa94/0x1010 net/core/dev.c:7297
handle_softirqs+0x213/0x8f0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0x109/0x170 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__schedule+0xf4b/0x5890 kernel/sched/core.c:6645
Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 d9 47 00 00 48 8b bd 10 ff ff ff 4d 89 67 10 4c 89 e6 e8 6d 94 e4 f5 48 89 c7 e8 d5 1c 41 f6 <48> 8b b5 98 fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 01 c6 48 c7
RSP: 0018:ffffc9000be3fb98 EFLAGS: 00000206
RAX: 0000000006e490dd RBX: ffff888027835a00 RCX: 1ffffffff20bf031
RDX: 0000000000000000 RSI: ffffffff8b6ce5c0 RDI: ffffffff8bd2c380
RBP: ffffc9000be3fd30 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff905fc517 R11: 0000000000000000 R12: ffff8880b863f888
R13: 0000000000000000 R14: ffff8880b863ed00 R15: ffff8880b863ed00
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
vivid_thread_vid_out+0xe0b/0x1b70 drivers/media/test-drivers/vivid/vivid-kthread-out.c:240
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
net_ratelimit: 13760 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:de:a3:c2:7a:03:60, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:de:a3:c2:7a:03:60, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:de:a3:c2:7a:03:60, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)