FAT-fs (loop4): bogus number of reserved sectors FAT-fs (loop4): Can't find a valid FAT filesystem INFO: task syz-executor.1:28518 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #88 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28224 28518 7498 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:287 [inline] rwsem_down_read_failed+0x213/0x420 kernel/locking/rwsem-xadd.c:304 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x49/0x90 kernel/locking/rwsem.c:26 do_user_addr_fault arch/x86/mm/fault.c:1426 [inline] __do_page_fault+0x9c2/0xd60 arch/x86/mm/fault.c:1541 do_page_fault+0x71/0x581 arch/x86/mm/fault.c:1572 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143 RIP: 0033:0x400610 Code: Bad RIP value. RSP: 002b:00007ffc764e6710 EFLAGS: 00010202 RAX: 0000000000000008 RBX: 000000000073c900 RCX: 00000000200000c0 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000008 RBP: 000000000073c900 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffc764e6810 R11: 0000000000000246 R12: fffffffffffffffe R13: 0000000000284138 R14: 00000000000003e8 R15: 000000000073c0ec INFO: task syz-executor.1:28539 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #88 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27696 28539 7498 0x80000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:287 [inline] rwsem_down_read_failed+0x213/0x420 kernel/locking/rwsem-xadd.c:304 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x49/0x90 kernel/locking/rwsem.c:26 exit_mm kernel/exit.c:511 [inline] do_exit+0x45b/0x2fd0 kernel/exit.c:862 do_group_exit+0x135/0x370 kernel/exit.c:979 get_signal+0x399/0x1d50 kernel/signal.c:2575 do_signal+0x87/0x1940 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: Bad RIP value. RSP: 002b:00007ff312d86cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000073c048 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000073c048 RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000073c04c R13: 00007ffc764e66cf R14: 00007ff312d879c0 R15: 000000000073c04c INFO: task syz-executor.1:28544 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #88 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28800 28544 7498 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:584 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:613 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 do_mmu_notifier_register+0x38e/0x4a0 mm/mmu_notifier.c:256 mmu_notifier_register+0x23/0x30 mm/mmu_notifier.c:307 kvm_init_mmu_notifier arch/x86/kvm/../../../virt/kvm/kvm_main.c:511 [inline] kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:679 [inline] kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3326 [inline] kvm_dev_ioctl+0xfe0/0x1750 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3378 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: Bad RIP value. RSP: 002b:00007ff312d65c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000003 RBP: 000000000073c0e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff312d666d4 R13: 00000000004c093a R14: 00000000004d2750 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1040: #0: 000000000f63fa2d (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4389 1 lock held by rsyslogd/7367: #0: 0000000095b59f01 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:795 2 locks held by getty/7457: #0: 00000000fd8ac8c2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000f7b8ec74 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7458: #0: 00000000fa431844 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000005ff9a46a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7459: #0: 00000000179fa908 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000009ba79649 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7460: #0: 0000000097781592 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000d20f0dc5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7461: #0: 000000007ee11636 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000bbcc3506 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7462: #0: 0000000077c64e20 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000004d589886 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7463: #0: 000000001a3c46f7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000bca502b9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 1 lock held by syz-executor.1/28518: #0: 000000006d9fcfb9 (&mm->mmap_sem){++++}, at: do_user_addr_fault arch/x86/mm/fault.c:1426 [inline] #0: 000000006d9fcfb9 (&mm->mmap_sem){++++}, at: __do_page_fault+0x9c2/0xd60 arch/x86/mm/fault.c:1541 4 locks held by syz-executor.1/28519: 1 lock held by syz-executor.1/28531: #0: 000000006d9fcfb9 (&mm->mmap_sem){++++}, at: exit_mm kernel/exit.c:511 [inline] #0: 000000006d9fcfb9 (&mm->mmap_sem){++++}, at: do_exit+0x45b/0x2fd0 kernel/exit.c:862 1 lock held by syz-executor.1/28539: #0: 000000006d9fcfb9 (&mm->mmap_sem){++++}, at: exit_mm kernel/exit.c:511 [inline] #0: 000000006d9fcfb9 (&mm->mmap_sem){++++}, at: do_exit+0x45b/0x2fd0 kernel/exit.c:862 1 lock held by syz-executor.1/28544: #0: 000000006d9fcfb9 (&mm->mmap_sem){++++}, at: do_mmu_notifier_register+0x38e/0x4a0 mm/mmu_notifier.c:256 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1040 Comm: khungtaskd Not tainted 5.0.0-rc8+ #88 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x9df/0xee0 kernel/hung_task.c:287 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.475 msecs NMI backtrace for cpu 0 CPU: 0 PID: 28519 Comm: syz-executor.1 Not tainted 5.0.0-rc8+ #88 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__sanitizer_cov_trace_pc+0x1/0x50 kernel/kcov.c:94 Code: 08 41 bc f4 ff ff ff e8 11 9f ea ff 48 c7 05 72 fd e5 08 00 00 00 00 e9 c8 e9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 55 <48> 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 98 0e 92 RSP: 0000:ffff8880ae807ed8 EFLAGS: 00000097 RAX: 0000000080010000 RBX: 0000000000000000 RCX: ffffffff81642c2e RDX: 0000000000000003 RSI: 0000000000000004 RDI: 0000000000000005 RBP: ffff8880ae807f08 R08: ffff88804ad66480 R09: ffffed1015d04ba9 R10: ffffed1015d04ba8 R11: ffff8880ae825d43 R12: 0000028afef09f9f R13: ffff8880ae81f140 R14: 0000000000000003 R15: 0000000000000001 FS: 00007ff312dc9700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6f1b584518 CR3: 000000005c3ca000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hrtimer_interrupt+0x369/0x770 kernel/time/hrtimer.c:1522 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline] smp_apic_timer_interrupt+0x120/0x570 arch/x86/kernel/apic/apic.c:1060 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:94 Code: e5 08 41 bc f4 ff ff ff e8 11 9f ea ff 48 c7 05 72 fd e5 08 00 00 00 00 e9 c8 e9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 48 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 98 0e RSP: 0000:ffff888085716828 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff818918d1 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff888085716960 R08: ffff88804ad66480 R09: ffffed1015d05bd0 R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: ffff888023dfacc0 R13: 0000000000000000 R14: ffffea0000c79880 R15: 0000000000000000 add_to_page_cache_lru+0x1f1/0x780 mm/filemap.c:886 mpage_readpages+0x341/0x620 fs/mpage.c:399 blkdev_readpages+0x2d/0x40 fs/block_dev.c:615 read_pages+0x10f/0x550 mm/readahead.c:123 __do_page_cache_readahead+0x3ba/0x5c0 mm/readahead.c:187 ra_submit mm/internal.h:66 [inline] do_sync_mmap_readahead mm/filemap.c:2432 [inline] filemap_fault+0xa91/0x2400 mm/filemap.c:2508 __do_fault+0x116/0x4e0 mm/memory.c:3019 do_read_fault mm/memory.c:3430 [inline] do_fault mm/memory.c:3556 [inline] handle_pte_fault mm/memory.c:3787 [inline] __handle_mm_fault+0x2cbd/0x3f20 mm/memory.c:3911 handle_mm_fault+0x43f/0xb30 mm/memory.c:3948 faultin_page mm/gup.c:535 [inline] __get_user_pages+0x7b6/0x1a40 mm/gup.c:738 __get_user_pages_locked mm/gup.c:914 [inline] get_user_pages_unlocked+0x291/0x440 mm/gup.c:1037 hva_to_pfn_slow arch/x86/kvm/../../../virt/kvm/kvm_main.c:1488 [inline] hva_to_pfn arch/x86/kvm/../../../virt/kvm/kvm_main.c:1596 [inline] __gfn_to_pfn_memslot+0x3bf/0xde0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1652 try_async_pf+0x17d/0xaf0 arch/x86/kvm/mmu.c:4022 tdp_page_fault+0x2f5/0x6b0 arch/x86/kvm/mmu.c:4119 kvm_mmu_page_fault+0x1de/0x1740 arch/x86/kvm/mmu.c:5350 handle_ept_violation+0x1c8/0x500 arch/x86/kvm/vmx/vmx.c:5102 vmx_handle_exit+0x279/0x1640 arch/x86/kvm/vmx/vmx.c:5847 vcpu_enter_guest+0x128a/0x6290 arch/x86/kvm/x86.c:7916 vcpu_run arch/x86/kvm/x86.c:7980 [inline] kvm_arch_vcpu_ioctl_run+0x425/0x16e0 arch/x86/kvm/x86.c:8180 kvm_vcpu_ioctl+0x4dc/0xfa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2678 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff312dc8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff312dc96d4 R13: 00000000004c0d61 R14: 00000000004d2bb8 R15: 00000000ffffffff