INFO: task syz-executor.4:7374 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:25752 pid:7374 tgid:7371 ppid:5111 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
filemap_invalidate_lock include/linux/fs.h:838 [inline]
blkdev_fallocate+0x233/0x550 block/fops.c:797
vfs_fallocate+0x566/0x6c0 fs/open.c:330
madvise_remove mm/madvise.c:1002 [inline]
madvise_vma_behavior mm/madvise.c:1026 [inline]
madvise_walk_vmas mm/madvise.c:1261 [inline]
do_madvise+0x1b50/0x4840 mm/madvise.c:1441
__do_sys_madvise mm/madvise.c:1454 [inline]
__se_sys_madvise mm/madvise.c:1452 [inline]
__x64_sys_madvise+0xa6/0xc0 mm/madvise.c:1452
do_syscall_64+0xfd/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f997b47dda9
RSP: 002b:00007f997c26d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f997b5abf80 RCX: 00007f997b47dda9
RDX: 0000000000000009 RSI: 0000000000c00304 RDI: 0000000020000000
RBP: 00007f997b4ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f997b5abf80 R15: 00007ffde68f0f08
INFO: task syz-executor.1:7373 blocked for more than 144 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:24632 pid:7373 tgid:7373 ppid:5829 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
filemap_invalidate_lock_shared include/linux/fs.h:848 [inline]
page_cache_ra_unbounded+0xf2/0x7c0 mm/readahead.c:225
do_sync_mmap_readahead+0x444/0x850
filemap_fault+0x7c6/0x1680 mm/filemap.c:3245
__do_fault+0x137/0x460 mm/memory.c:4396
do_shared_fault mm/memory.c:4818 [inline]
do_fault mm/memory.c:4892 [inline]
do_pte_missing mm/memory.c:3745 [inline]
handle_pte_fault mm/memory.c:5164 [inline]
__handle_mm_fault+0x23c3/0x72d0 mm/memory.c:5305
handle_mm_fault+0x3c2/0x8a0 mm/memory.c:5470
do_user_addr_fault arch/x86/mm/fault.c:1362 [inline]
handle_page_fault arch/x86/mm/fault.c:1505 [inline]
exc_page_fault+0x446/0x890 arch/x86/mm/fault.c:1563
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fbfec82c551
RSP: 002b:00007ffd524bb740 EFLAGS: 00010246
RAX: 0000000020000040 RBX: 00007ffd524bb888 RCX: 0000000000000000
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 000055555b6e8360
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: fffffffffffffffe R14: 00007fbfec400000 R15: 00007fbfec400260
Showing all locks held in the system:
3 locks held by kworker/0:0/7:
#0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335
#1: ffffc900000c7d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc900000c7d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335
#2: ffff88809d480240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2d1/0x4130 drivers/net/netdevsim/fib.c:1489
1 lock held by khungtaskd/29:
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:2/42:
#0: ffff88802a07c948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff88802a07c948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335
#1: ffffc90000b27d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc90000b27d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335
#2: ffffffff8f38da88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4191
3 locks held by kworker/u8:8/1273:
2 locks held by getty/4827:
#0: ffff88802aa970a0 (&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+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.5/7263:
1 lock held by syz-executor.4/7374:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x233/0x550 block/fops.c:797
1 lock held by syz-executor.1/7373:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf2/0x7c0 mm/readahead.c:225
1 lock held by syz-executor.2/7477:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf2/0x7c0 mm/readahead.c:225
1 lock held by syz-executor.5/7536:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x233/0x550 block/fops.c:797
1 lock held by syz-executor.5/7538:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x233/0x550 block/fops.c:797
1 lock held by syz-executor.0/7539:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x233/0x550 block/fops.c:797
1 lock held by syz-executor.1/7607:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf2/0x7c0 mm/readahead.c:225
1 lock held by syz-executor.3/7653:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x233/0x550 block/fops.c:797
1 lock held by syz-executor.0/7747:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf2/0x7c0 mm/readahead.c:225
1 lock held by syz-executor.2/7793:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x233/0x550 block/fops.c:797
1 lock held by syz-executor.4/7792:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x233/0x550 block/fops.c:797
1 lock held by syz-executor.3/7855:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf2/0x7c0 mm/readahead.c:225
1 lock held by syz-executor.1/7911:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x233/0x550 block/fops.c:797
1 lock held by syz-executor.2/7996:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf2/0x7c0 mm/readahead.c:225
3 locks held by syz-executor.3/8025:
#0: ffffffff8f38da88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f38da88 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
#1: ffff88803bc05408 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x22d/0x420 drivers/net/wireguard/device.c:50
#2: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#2: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor.4/8044:
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0970c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x233/0x550 block/fops.c:797
1 lock held by syz-executor.1/8085:
#0: ffff8880b943e358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 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+0xfb0/0xff0 kernel/hung_task.c:379
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8025 Comm: syz-executor.3 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:unwind_next_frame+0x18a/0x2a00
Code: 49 be 00 00 00 00 00 fc ff df 48 89 44 24 78 42 0f b6 04 30 84 c0 48 8b 5c 24 20 48 89 54 24 10 0f 85 f6 1f 00 00 48 0f be 2a <48> 8b 44 24 30 42 80 3c 30 00 74 08 48 89 df e8 62 b3 b7 00 48 03
RSP: 0018:ffffc900050ee808 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc900050ee928 RCX: ffff88801f43da00
RDX: ffffc900050ee915 RSI: 0000000000000001 RDI: ffffffff81409031
RBP: 0000000000000000 R08: ffffffff81409011 R09: ffffc900050ee9d0
R10: 0000000000000003 R11: ffffffff8180e0a0 R12: ffffc900050ee8e0
R13: ffffc900050ee930 R14: dffffc0000000000 R15: ffffffff86dde82c
FS: 0000555556ccb480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555ad0b938 CR3: 000000015f1f2000 CR4: 0000000000350ef0
Call Trace:
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3798 [inline]
slab_alloc_node mm/slub.c:3845 [inline]
kmem_cache_alloc+0x174/0x340 mm/slub.c:3852
kmem_cache_zalloc include/linux/slab.h:739 [inline]
lsm_inode_alloc security/security.c:670 [inline]
security_inode_alloc+0x28/0x120 security/security.c:1581
inode_init_always+0x947/0xc70 fs/inode.c:232
alloc_inode fs/inode.c:268 [inline]
new_inode_pseudo+0x9e/0x1e0 fs/inode.c:1007
new_inode+0x22/0x1d0 fs/inode.c:1033
debugfs_get_inode fs/debugfs/inode.c:72 [inline]
__debugfs_create_file+0x14d/0x490 fs/debugfs/inode.c:437
add_link_files net/mac80211/debugfs_netdev.c:987 [inline]
ieee80211_debugfs_add_netdev net/mac80211/debugfs_netdev.c:1014 [inline]
ieee80211_debugfs_recreate_netdev+0xe7d/0x1400 net/mac80211/debugfs_netdev.c:1045
ieee80211_if_add+0x988/0x1770 net/mac80211/iface.c:2185
ieee80211_register_hw+0x321c/0x3d80 net/mac80211/main.c:1575
mac80211_hwsim_new_radio+0x25ac/0x4550 drivers/net/wireless/virtual/mac80211_hwsim.c:5454
hwsim_new_radio_nl+0xe4c/0x21d0 drivers/net/wireless/virtual/mac80211_hwsim.c:6135
genl_family_rcv_msg_doit net/netlink/genetlink.c:1113 [inline]
genl_family_rcv_msg net/netlink/genetlink.c:1193 [inline]
genl_rcv_msg+0xb16/0xec0 net/netlink/genetlink.c:1208
netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2559
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217
netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
netlink_unicast+0x7ec/0x980 net/netlink/af_netlink.c:1361
netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x223/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2191
__do_sys_sendto net/socket.c:2203 [inline]
__se_sys_sendto net/socket.c:2199 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2199
do_syscall_64+0xfd/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccfc07fa9c
Code: 1a 51 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 60 51 02 00 48 8b
RSP: 002b:00007ffc4bb6e7e0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fccfccd4620 RCX: 00007fccfc07fa9c
RDX: 0000000000000024 RSI: 00007fccfccd4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffc4bb6e834 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fccfccd4670 R15: 0000000000000000