INFO: task syz.2.498:8009 blocked for more than 143 seconds.
Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.498 state:D stack:25088 pid:8009 tgid:8009 ppid:7569 flags:0x20004004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
coredump_task_exit kernel/exit.c:434 [inline]
do_exit+0x57c/0x27f0 kernel/exit.c:834
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
get_signal+0x16a1/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
__do_fast_syscall_32+0xc4/0x110 arch/x86/entry/common.c:389
do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f77579
RSP: 002b:00000000f755fafc EFLAGS: 00000206 ORIG_RAX: 00000000000000f0
RAX: fffffffffffffdfc RBX: 00000000f7434f8c RCX: 0000000000000080
RDX: 0000000000000000 RSI: 00000000f755fcd0 RDI: 0000000000000000
RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz.2.498:8010 blocked for more than 143 seconds.
Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.498 state:D stack:22480 pid:8010 tgid:8009 ppid:7569 flags:0x20004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
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:854 [inline]
page_cache_ra_unbounded+0xf7/0x7f0 mm/readahead.c:225
do_sync_mmap_readahead+0x49c/0x970
filemap_fault+0x828/0x1760 mm/filemap.c:3314
__do_fault+0x135/0x460 mm/memory.c:4655
do_read_fault mm/memory.c:5061 [inline]
do_fault mm/memory.c:5191 [inline]
do_pte_missing mm/memory.c:3947 [inline]
handle_pte_fault+0x3b18/0x6eb0 mm/memory.c:5522
__handle_mm_fault mm/memory.c:5665 [inline]
handle_mm_fault+0x1029/0x1980 mm/memory.c:5833
faultin_page mm/gup.c:1194 [inline]
__get_user_pages+0x6ec/0x16a0 mm/gup.c:1493
__get_user_pages_locked mm/gup.c:1760 [inline]
get_dump_page+0x155/0x2f0 mm/gup.c:2278
dump_user_range+0x14c/0x950 fs/coredump.c:952
elf_core_dump+0x406d/0x4bb0 fs/binfmt_elf.c:2116
do_coredump+0x1b04/0x2a30 fs/coredump.c:767
get_signal+0x13fa/0x1740 kernel/signal.c:2902
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
__do_fast_syscall_32+0xc4/0x110 arch/x86/entry/common.c:389
do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7148da0
RSP: 002b:00000000f572607c EFLAGS: 00000206 ORIG_RAX: 0000000000000182
RAX: 000000000000000b RBX: 0000000020000680 RCX: 00000000f572610c
RDX: 00000000f572608c RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6620
3 locks held by kworker/0:2/939:
#0: ffff888015880948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888015880948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90003957d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90003957d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff8880795ac240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2d1/0x4130 drivers/net/netdevsim/fib.c:1489
2 locks held by kworker/u8:11/2974:
3 locks held by kworker/u9:1/4619:
#0: ffff888062e8d948 ((wq_completion)hci8){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888062e8d948 ((wq_completion)hci8){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc9000d49fd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc9000d49fd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff88802e118d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:327
2 locks held by getty/4978:
#0: ffff88802f5fa0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
3 locks held by kworker/0:7/5285:
5 locks held by kworker/0:9/5293:
#0: ffff8880186c3548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff8880186c3548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc9000445fd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc9000445fd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff888023bbe190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#2: ffff888023bbe190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x5150 drivers/usb/core/hub.c:5849
#3: ffff888024a10190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#3: ffff888024a10190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x520 drivers/base/dd.c:1004
#4: ffff88802e46b160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#4: ffff88802e46b160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x520 drivers/base/dd.c:1004
1 lock held by syz.1.386/7316:
3 locks held by syz.2.498/8010:
#0: ffff88802d41a420 (sb_writers#5){.+.+}-{0:0}, at: do_coredump+0x1adc/0x2a30 fs/coredump.c:766
#1: ffff888079ff9498 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:153 [inline]
#1: ffff888079ff9498 (&mm->mmap_lock){++++}-{3:3}, at: __get_user_pages_locked mm/gup.c:1735 [inline]
#1: ffff888079ff9498 (&mm->mmap_lock){++++}-{3:3}, at: get_dump_page+0xe2/0x2f0 mm/gup.c:2278
#2: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:854 [inline]
#2: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf7/0x7f0 mm/readahead.c:225
1 lock held by syz.1.502/8065:
#0: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:844 [inline]
#0: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1fc/0x530 block/fops.c:807
1 lock held by syz.4.521/8195:
#0: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:854 [inline]
#0: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf7/0x7f0 mm/readahead.c:225
3 locks held by syz.1.527/8318:
#0: ffff88807aa5c420 (sb_writers#5){.+.+}-{0:0}, at: do_coredump+0x1adc/0x2a30 fs/coredump.c:766
#1: ffff888015873118 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:153 [inline]
#1: ffff888015873118 (&mm->mmap_lock){++++}-{3:3}, at: __get_user_pages_locked mm/gup.c:1735 [inline]
#1: ffff888015873118 (&mm->mmap_lock){++++}-{3:3}, at: get_dump_page+0xe2/0x2f0 mm/gup.c:2278
#2: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:854 [inline]
#2: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf7/0x7f0 mm/readahead.c:225
1 lock held by syz.4.571/8477:
#0: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:844 [inline]
#0: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1fc/0x530 block/fops.c:807
1 lock held by syz.2.585/8514:
#0: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:844 [inline]
#0: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1fc/0x530 block/fops.c:807
4 locks held by udevd/9173:
#0: ffff888029e8fc30 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xb7/0xd60 fs/seq_file.c:182
#1: ffff888071f35c88 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x53/0x3b0 fs/kernfs/file.c:154
#2: ffff8880428542d8 (kn->active#5){++++}-{0:0}, at: kernfs_seq_start+0x72/0x3b0 fs/kernfs/file.c:155
#3: ffff888024a10190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#3: ffff888024a10190 (&dev->mutex){....}-{3:3}, at: uevent_show+0x17d/0x340 drivers/base/core.c:2743
2 locks held by syz.2.677/9325:
3 locks held by syz.4.761/9604:
#0: ffff8880518e2420 (sb_writers#5){.+.+}-{0:0}, at: do_coredump+0x1adc/0x2a30 fs/coredump.c:766
#1: ffff88807b488b18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:153 [inline]
#1: ffff88807b488b18 (&mm->mmap_lock){++++}-{3:3}, at: __get_user_pages_locked mm/gup.c:1735 [inline]
#1: ffff88807b488b18 (&mm->mmap_lock){++++}-{3:3}, at: get_dump_page+0xe2/0x2f0 mm/gup.c:2278
#2: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:854 [inline]
#2: ffff88801dc9e540 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf7/0x7f0 mm/readahead.c:225
1 lock held by syz-executor/9817:
#0: ffffffff8e93cb78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:328 [inline]
#0: ffffffff8e93cb78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:958
1 lock held by syz-executor/9897:
#0: ffffffff8e93cb78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline]
#0: ffffffff8e93cb78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:958
1 lock held by syz.0.855/9907:
3 locks held by syz.1.857/9917:
#0: ffff88805f0a0d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:488 [inline]
#0: ffff88805f0a0d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2699
#1: ffff88805f0a0078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x572/0x11a0 net/bluetooth/hci_sync.c:5110
#2: ffffffff8fdeb1a8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1977 [inline]
#2: ffffffff8fdeb1a8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa6/0x240 net/bluetooth/hci_conn.c:2592
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #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+0x241/0x360 lib/dump_stack.c:119
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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: 5273 Comm: kworker/0:3 Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: events drain_vmap_area_work
RIP: 0010:clockevents_program_event+0xd8/0x350 kernel/time/clockevents.c:323
Code: ae 83 0f 00 49 8d 5f 3c 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 f3 01 00 00 8b 1b 89 de 83 e6 04 31 ff e8 c8 87 0f 00 <83> e3 04 0f 85 ff 00 00 00 e8 2a 1c fd ff 49 29 c4 bf 01 00 00 00
RSP: 0018:ffffc90000007e78 EFLAGS: 00000046
RAX: 0000000080010002 RBX: 0000000000000003 RCX: ffff888029ba5a00
RDX: ffff888029ba5a00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000003 R08: ffffffff8183e338 R09: ffffffff8183e2e2
R10: 0000000000000002 R11: ffff888029ba5a00 R12: 00000058ec24ff2b
R13: dffffc0000000000 R14: ffff8880b9228378 R15: ffff8880b9228340
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f7f16e40 CR3: 0000000064684000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
hrtimer_interrupt+0x54a/0x990 kernel/time/hrtimer.c:1828
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:236 [inline]
RIP: 0010:__sanitizer_cov_trace_switch+0x9d/0x120 kernel/kcov.c:341
Code: 00 00 4d 85 d2 0f 84 8b 00 00 00 4c 8b 4c 24 20 65 4c 8b 1c 25 40 d7 03 00 31 d2 eb 08 48 ff c2 49 39 d2 74 71 4c 8b 74 d6 10 <65> 8b 05 64 6a 70 7e a9 00 01 ff 00 74 11 a9 00 01 00 00 74 de 41
RSP: 0018:ffffc900042d7318 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888029ba5a00
RDX: 0000000000000004 RSI: ffffffff8e7a32a0 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000005 R09: ffffffff81410f0e
R10: 0000000000000008 R11: ffff888029ba5a00 R12: ffffffff9027e9b0
R13: dffffc0000000000 R14: 0000000000000006 R15: 1ffff9200085ae90
unwind_next_frame+0x7be/0x2a00 arch/x86/kernel/unwind_orc.c:515
__unwind_start+0x641/0x7c0 arch/x86/kernel/unwind_orc.c:760
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x103/0x1b0 arch/x86/kernel/stacktrace.c:24
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
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kmem_cache_free+0x145/0x350 mm/slub.c:4548
__merge_or_add_vmap_area mm/vmalloc.c:1401 [inline]
merge_or_add_vmap_area_augment mm/vmalloc.c:1458 [inline]
reclaim_list_global+0x2a3/0x1350 mm/vmalloc.c:2126
decay_va_pool_node+0xf68/0xfc0 mm/vmalloc.c:2187
__purge_vmap_area_lazy+0x15d/0xae0 mm/vmalloc.c:2249
drain_vmap_area_work+0x27/0x40 mm/vmalloc.c:2324
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244