INFO: task syz-executor.5:17669 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. nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. syz-executor.5 D28648 17669 8130 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 hpfs: bad mount options. 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: 0033:0x7f3b03a42f7b Code: Bad RIP value. RSP: 002b:00007ffd62115d60 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3b03a42f7b RDX: 0000001b2f420000 RSI: 0000001b2f42601c RDI: 0000000000000004 RBP: 00007f3b03bb2980 R08: 0000000000000000 R09: 000000003253460c R10: 0008a7e98b922f76 R11: 0000000000000293 R12: 00000000000540e1 R13: 00007ffd62115e60 R14: 00007f3b03bb1050 R15: 0000000000000032 INFO: task syz-executor.5:17674 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.5 D27592 17674 8130 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 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. 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+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 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe hub 9-0:1.0: USB hub found hub 9-0:1.0: 8 ports detected RIP: 0033:0x7f3b03a910c9 Code: Bad RIP value. RSP: 002b:00007f3b02003168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f3b03bb0f80 RCX: 00007f3b03a910c9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0 RBP: 00007f3b03aecae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd62115cff R14: 00007f3b02003300 R15: 0000000000022000 Showing all locks held in the system: 3 locks held by kworker/u4:3/112: 1 lock held by khungtaskd/1571: #0: 000000008680774b (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7808: #0: 00000000eb24da0b (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 1 lock held by syz-executor.5/17669: #0: 00000000bef49930 (&sb->s_type->i_mutex_key#23){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 00000000bef49930 (&sb->s_type->i_mutex_key#23){+.+.}, at: fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 2 locks held by syz-executor.5/17674: #0: 000000002b9d74c6 (sb_writers#16){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000002b9d74c6 (sb_writers#16){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000bef49930 (&sb->s_type->i_mutex_key#23){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 00000000bef49930 (&sb->s_type->i_mutex_key#23){+.+.}, at: fuse_open_common+0x1bc/0x2c0 fs/fuse/file.c:215 1 lock held by syz-executor.2/24209: #0: 00000000b73efd71 (&mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x152/0x200 mm/util.c:355 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 24213 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:100 Code: e8 11 dd 35 00 e9 ab fe ff ff 4c 89 ef e8 04 dd 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 34 24 <65> 48 8b 04 25 c0 df 01 00 65 8b 15 cc 59 9f 7e 81 e2 00 01 1f 00 RSP: 0018:ffff8880ba107af8 EFLAGS: 00000046 RAX: 0000000080010001 RBX: 0000000000000000 RCX: ffffffff817776ca RDX: 0000000000000000 RSI: ffffffff817776d3 RDI: 0000000000000001 RBP: ffff88803d8b4b80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: ffffffff8c66505b R12: 0000000000000000 R13: ffff88803d8b4d80 R14: 00000000000003e8 R15: 0000000000000000 FS: 00007fcdd39d8700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f76c84d6000 CR3: 00000000a9388000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __perf_event_account_interrupt+0xf3/0x2c0 kernel/events/core.c:7866 __perf_event_overflow+0xb1/0x370 kernel/events/core.c:7892 perf_swevent_hrtimer+0x272/0x3e0 kernel/events/core.c:9261 __run_hrtimer kernel/time/hrtimer.c:1465 [inline] __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1527 hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1585 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:zap_pte_range mm/memory.c:1349 [inline] RIP: 0010:zap_pmd_range mm/memory.c:1463 [inline] RIP: 0010:zap_pud_range mm/memory.c:1492 [inline] RIP: 0010:zap_p4d_range mm/memory.c:1513 [inline] RIP: 0010:unmap_page_range+0x1456/0x2c50 mm/memory.c:1534 Code: 70 e6 d6 ff c1 fb 1f 83 e3 03 e8 35 e5 d6 ff 48 8b 84 24 a0 00 00 00 48 63 db 48 8d 3c 98 48 89 f8 48 c1 e8 03 42 0f b6 14 30 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 39 15 00 00 83 RSP: 0018:ffff88809fb2f770 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 RAX: 1ffff11013f65f0e RBX: 0000000000000000 RCX: ffffffff818ba030 RDX: 0000000000000000 RSI: ffffffff818ba03b RDI: ffff88809fb2f870 RBP: ffffea0002ad1c08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: dead000000000100 R13: ffffea0002ad1c00 R14: dffffc0000000000 R15: 00007fcdd4eed000 unmap_single_vma+0x198/0x300 mm/memory.c:1579 unmap_vmas+0xa9/0x180 mm/memory.c:1609 exit_mmap+0x2b9/0x530 mm/mmap.c:3093 __mmput kernel/fork.c:1016 [inline] mmput+0x14e/0x4a0 kernel/fork.c:1037 exit_mm kernel/exit.c:549 [inline] do_exit+0xaec/0x2be0 kernel/exit.c:857 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fcdd54660c9 Code: Bad RIP value. RSP: 002b:00007fcdd39d8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: 0000000020000000 RBX: 00007fcdd5585f80 RCX: 00007fcdd54660c9 RDX: 0000000000000002 RSI: 0000000000fbe000 RDI: 0000000020000000 RBP: 00007fcdd54c1ae9 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000000031 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffaa90602f R14: 00007fcdd39d8300 R15: 0000000000022000