INFO: task syz-executor.1:29797 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28648 29797 8124 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 filp_close+0xb4/0x160 fs/open.c:1162 __close_fd+0x133/0x200 fs/file.c:636 __do_sys_close fs/open.c:1181 [inline] __se_sys_close fs/open.c:1179 [inline] __x64_sys_close+0x69/0x100 fs/open.c:1179 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4343a643cb Code: Bad RIP value. RSP: 002b:00007ffc7dfe68c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f4343a643cb RDX: 0000001b2f020000 RSI: 0000001b2f026800 RDI: 0000000000000004 RBP: 00007f4343bd4980 R08: 0000000000000000 R09: 000000003253460c R10: 00187201960288f8 R11: 0000000000000293 R12: 00000000000d8c0b R13: 00007ffc7dfe69c0 R14: 00007f4343bd3120 R15: 0000000000000032 INFO: task syz-executor.1:29800 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28184 29800 8124 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 fuse_wait_on_page_writeback fs/fuse/file.c:383 [inline] fuse_wait_on_page_writeback.isra.0+0x11b/0x170 fs/fuse/file.c:379 fuse_launder_page fs/fuse/file.c:2033 [inline] fuse_launder_page+0xb6/0xe0 fs/fuse/file.c:2026 do_launder_page mm/truncate.c:655 [inline] invalidate_inode_pages2_range+0x795/0x1110 mm/truncate.c:725 fuse_finish_open+0x2e2/0x590 fs/fuse/file.c:182 fuse_open_common+0x236/0x2c0 fs/fuse/file.c:222 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4343ab25f9 Code: Bad RIP value. RSP: 002b:00007f4342425168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f4343bd2f80 RCX: 00007f4343ab25f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f4343b0d7b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc7dfe685f R14: 00007f4342425300 R15: 0000000000022000 INFO: task syz-executor.1:29825 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28856 29825 8124 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 io_schedule+0xb5/0x120 kernel/sched/core.c:5181 wait_on_page_bit_common mm/filemap.c:1123 [inline] __lock_page+0x316/0x460 mm/filemap.c:1296 lock_page include/linux/pagemap.h:484 [inline] invalidate_inode_pages2_range+0xb3f/0x1110 mm/truncate.c:713 fuse_finish_open+0x2e2/0x590 fs/fuse/file.c:182 fuse_open_common+0x254/0x2c0 fs/fuse/file.c:222 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4343ab25f9 Code: Bad RIP value. RSP: 002b:00007f4342404168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f4343bd3050 RCX: 00007f4343ab25f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0 RBP: 00007f4343b0d7b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc7dfe685f R14: 00007f4342404300 R15: 0000000000022000 Showing all locks held in the system: 3 locks held by ksoftirqd/0/9: #0: 000000006fc1ee28 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline] #0: 000000006fc1ee28 (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 #1: 00000000b7872345 (rcu_read_lock){....}, at: trace_sched_stat_runtime include/trace/events/sched.h:428 [inline] #1: 00000000b7872345 (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 kernel/sched/fair.c:857 #2: 00000000d638b77b (pool_lock){-.-.}, at: __free_object+0x17/0x1e0 lib/debugobjects.c:251 1 lock held by khungtaskd/1565: #0: 00000000b7872345 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7800: #0: 00000000f576bdfe (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 1 lock held by syz-executor.1/29797: #0: 0000000041dc3575 (&sb->s_type->i_mutex_key#32){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 0000000041dc3575 (&sb->s_type->i_mutex_key#32){+.+.}, at: fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 2 locks held by syz-executor.1/29825: #0: 000000000b778fad (sb_writers#24){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000000b778fad (sb_writers#24){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 0000000041dc3575 (&sb->s_type->i_mutex_key#32){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 0000000041dc3575 (&sb->s_type->i_mutex_key#32){+.+.}, at: fuse_open_common+0x1bc/0x2c0 fs/fuse/file.c:215 1 lock held by syz-executor.1/1429: #0: 00000000cf6b3819 (&pipe->mutex/1){+.+.}, at: __pipe_lock fs/pipe.c:98 [inline] #0: 00000000cf6b3819 (&pipe->mutex/1){+.+.}, at: pipe_release+0x49/0x340 fs/pipe.c:593 1 lock held by syz-executor.1/1436: #0: 00000000cf6b3819 (&pipe->mutex/1){+.+.}, at: pipe_lock_nested fs/pipe.c:77 [inline] #0: 00000000cf6b3819 (&pipe->mutex/1){+.+.}, at: pipe_lock+0x63/0x80 fs/pipe.c:85 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1565 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2887 Comm: kworker/u4:4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Workqueue: phy12 ieee80211_iface_work RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:23 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline] RIP: 0010:write_comp_data+0xf/0x70 kernel/kcov.c:122 Code: 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f 84 00 00 00 00 00 49 89 f1 49 89 fa 65 48 8b 34 25 c0 df 01 00 <65> 8b 05 7a 59 9f 7e a9 00 01 1f 00 75 4f 8b 86 60 13 00 00 83 f8 RSP: 0018:ffff8880ba007db8 EFLAGS: 00000046 RAX: ffff8880abc08000 RBX: 0000000000000000 RCX: ffffffff8167a97c RDX: 0000000000000000 RSI: ffff8880abc08000 RDI: 0000000000000005 RBP: ffffffff89f88d00 R08: ffffffff89f89540 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ba02bfc0 R13: ffffffff89f88d00 R14: 0000000000000286 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8496112000 CR3: 00000000b3650000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_hardirqs_on+0x3c/0x210 kernel/trace/trace_preemptirq.c:24 note_gp_changes+0x1b1/0x270 kernel/rcu/tree.c:1878 rcu_check_quiescent_state kernel/rcu/tree.c:2441 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2849 [inline] rcu_process_callbacks+0x16a/0x18b0 kernel/rcu/tree.c:2881 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:__save_stack_trace+0x96/0x190 arch/x86/kernel/stacktrace.c:44 Code: 80 e8 0e a5 06 00 8b 55 80 85 d2 75 2d eb 62 41 8b 04 24 41 3b 44 24 04 73 76 49 8b 54 24 08 8d 48 01 41 89 0c 24 48 89 1c c2 <48> 8d 7d 80 e8 e1 90 06 00 8b 45 80 85 c0 74 37 48 8d 7d 80 e8 71 RSP: 0018:ffff8880abc17110 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000006 RBX: ffffffff813e3b24 RCX: 0000000000000007 RDX: ffff8880abc171d0 RSI: ffff8880abc16f80 RDI: ffffffff813e3b24 RBP: ffff8880abc171a0 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880abc1717f R11: 0000000000074071 R12: ffff8880abc171b8 R13: 0000000000000000 R14: ffff88813bff04c0 R15: 0000000000000060 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3397 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x144/0x3c0 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] kzalloc include/linux/slab.h:709 [inline] cfg80211_inform_bss_frame_data+0x200/0xeb0 net/wireless/scan.c:1255 ieee80211_bss_info_update+0x42d/0x1800 net/mac80211/scan.c:105 ieee80211_rx_bss_info net/mac80211/ibss.c:1125 [inline] ieee80211_rx_mgmt_probe_beacon+0xb4f/0x15c0 net/mac80211/ibss.c:1607 ieee80211_ibss_rx_queued_mgmt+0xe27/0x18b0 net/mac80211/ibss.c:1634 ieee80211_iface_work+0x5c4/0x8a0 net/mac80211/iface.c:1341 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415