[17300] 0 17300 18145 8747 25 4 0 1000 syz-executor.2 [17652] 0 17652 18211 8749 25 4 0 1000 syz-executor.2 [17711] 0 17711 18211 8749 25 4 0 1000 syz-executor.2 INFO: task syz-executor.0:17848 blocked for more than 140 seconds. Not tainted 4.14.140+ #39 [17767] 0 17767 18145 8714 25 3 0 0 syz-executor.1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [17792] 0 17792 18211 8719 25 3 0 0 syz-executor.1 syz-executor.0 D25312 17848 17847 0x00000000 [17847] 0 17847 18113 15 23 3 0 0 syz-executor.0 Call Trace: [17848] 0 17848 18112 8732 24 4 0 0 syz-executor.0 [18065] 0 18065 18211 8749 26 4 0 1000 syz-executor.0 [18609] 0 18609 18145 8714 24 3 0 0 syz-executor.2 [18612] 0 18612 18178 8716 24 3 0 0 syz-executor.2 [18614] 0 18614 18211 8718 24 3 0 0 syz-executor.2 [18615] 0 18615 18211 8718 24 3 0 0 syz-executor.2 [18697] 0 18697 18145 8745 26 4 0 0 syz-executor.1 [18729] 0 18729 18145 8714 25 3 0 0 syz-executor.2 [19004] 0 19004 18113 15 23 3 0 0 syz-executor.4 schedule+0x92/0x1c0 kernel/sched/core.c:3498 [19005] 0 19005 18112 8620 24 4 0 0 syz-executor.4 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556 [19251] 0 19251 5567 370 15 3 0 -1000 udevd __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 [19255] 0 19255 18178 8715 25 3 0 0 syz-executor.1 [19284] 0 19284 18211 8741 25 3 0 0 syz-executor.1 [19304] 0 19304 18178 8744 26 4 0 1000 syz-executor.0 [19493] 0 19493 18178 8714 26 3 0 1000 syz-executor.4 [19504] 0 19504 18145 8748 26 4 0 0 syz-executor.1 [19506] 0 19506 18244 8718 26 3 0 1000 syz-executor.4 [19609] 0 19609 18145 8713 24 3 0 0 syz-executor.2 [19628] 0 19628 18178 8716 24 3 0 0 syz-executor.2 [19630] 0 19630 18178 8716 24 3 0 0 syz-executor.2 [19687] 0 19687 34596 8760 28 4 0 0 syz-executor.1 [19734] 0 19734 34596 8760 28 4 0 0 syz-executor.1 [19787] 0 19787 18211 8746 26 4 0 0 syz-executor.0 [19898] 0 19898 34596 8763 28 4 0 0 syz-executor.5 [19900] 0 19900 18178 8747 26 4 0 0 syz-executor.1 [19977] 0 19977 18142 8719 26 3 0 0 syz-executor.1 [19985] 0 19985 18208 8723 26 3 0 0 syz-executor.1 [20021] 0 20021 18178 8749 26 4 0 0 syz-executor.5 [20455] 0 20455 18211 8750 26 4 0 0 syz-executor.5 [20469] 0 20469 18145 8715 25 3 0 0 syz-executor.1 [20476] 0 20476 18211 8720 25 3 0 0 syz-executor.1 [20491] 0 20491 18211 8750 26 4 0 0 syz-executor.5 [20590] 0 20590 18244 8752 27 4 0 0 syz-executor.0 [21185] 0 21185 18145 8713 25 3 0 0 syz-executor.5 [21217] 0 21217 18178 8749 25 4 0 0 syz-executor.2 [21225] 0 21225 18145 8715 24 3 0 0 syz-executor.2 [21236] 0 21236 34596 8726 27 3 0 0 syz-executor.5 [21394] 0 21394 18145 8710 25 3 0 1000 syz-executor.4 [21403] 0 21403 18178 8712 25 3 0 1000 syz-executor.4 [21453] 0 21453 18277 8754 26 4 0 0 syz-executor.1 [21458] 0 21458 18145 8746 26 4 0 0 syz-executor.5 [21474] 0 21474 18277 8754 26 4 0 0 syz-executor.1 [21492] 0 21492 18178 8743 26 4 0 1000 syz-executor.4 [21531] 0 21531 18244 8749 28 4 0 1000 syz-executor.4 [21547] 0 21547 18244 8749 28 4 0 1000 syz-executor.4 xt_find_table_lock+0x35/0x3d0 net/netfilter/x_tables.c:1092 [21574] 0 21574 18178 8743 26 4 0 1000 syz-executor.4 [21642] 0 21642 5402 207 15 3 0 -1000 udevd [21767] 0 21767 18211 8745 26 4 0 1000 syz-executor.4 [21794] 0 21794 18211 8745 26 4 0 1000 syz-executor.4 [21890] 0 21890 18145 8746 26 4 0 0 syz-executor.0 [21901] 0 21901 18145 8712 25 3 0 0 syz-executor.0 [21941] 0 21941 34596 8754 28 4 0 1000 syz-executor.4 [21951] 0 21951 34596 8754 28 4 0 1000 syz-executor.4 [22035] 0 22035 18145 8745 26 4 0 0 syz-executor.5 [22097] 0 22097 18145 8713 24 3 0 0 syz-executor.2 [22099] 0 22099 18178 8715 24 3 0 0 syz-executor.2 [22140] 0 22140 18178 8747 26 4 0 0 syz-executor.1 [22339] 0 22339 18244 8752 27 4 0 0 syz-executor.1 [22398] 0 22398 18145 8719 26 3 0 0 syz-executor.5 [22400] 0 22400 18145 8719 26 3 0 0 syz-executor.5 [22499] 0 22499 18178 10160 31 4 0 0 syz-executor.5 [22577] 0 22577 18178 8772 26 4 0 0 syz-executor.1 [22786] 0 22786 18178 8714 25 3 0 0 syz-executor.1 [22792] 0 22792 18211 8716 25 3 0 0 syz-executor.1 [23152] 0 23152 18145 8716 25 3 0 0 syz-executor.5 [23177] 0 23177 18178 8747 26 4 0 0 syz-executor.1 [23276] 0 23276 18211 8754 25 4 0 0 syz-executor.2 [23280] 0 23280 18178 8715 25 3 0 0 syz-executor.0 [23285] 0 23285 18278 8755 26 4 0 0 syz-executor.0 [23298] 0 23298 18245 8721 25 3 0 0 syz-executor.0 [23300] 0 23300 18278 8755 26 4 0 0 syz-executor.0 [23329] 0 23329 18178 13205 32 3 0 0 syz-executor.5 [23344] 0 23344 18145 8716 25 3 0 0 syz-executor.0 [23346] 0 23346 18211 8720 25 3 0 0 syz-executor.0 [23353] 0 23353 18202 13285 32 3 0 0 syz-executor.5 [23388] 0 23388 18211 8745 26 4 0 1000 syz-executor.4 [23432] 0 23432 18244 8752 26 4 0 0 syz-executor.1 [23578] 0 23578 18145 8747 26 4 0 0 syz-executor.1 [23638] 0 23638 18244 8750 26 4 0 0 syz-executor.0 get_info+0x10d/0x570 net/ipv6/netfilter/ip6_tables.c:983 [23663] 0 23663 18244 8750 26 4 0 0 syz-executor.0 [23707] 0 23707 18113 17 23 3 0 0 syz-executor.3 [23708] 0 23708 18112 8733 24 4 0 0 syz-executor.3 [23871] 0 23871 18145 8704 23 3 0 0 syz-executor.2 [23875] 0 23875 18145 8713 24 3 0 0 syz-executor.2 [23915] 0 23915 18211 8748 25 4 0 0 syz-executor.2 [23929] 0 23929 18211 8748 25 4 0 0 syz-executor.2 [23984] 0 23984 18145 8711 26 3 0 1000 syz-executor.3 [24042] 0 24042 18145 8741 26 4 0 1000 syz-executor.4 [24157] 0 24157 18178 8747 25 4 0 0 syz-executor.2 do_ipt_get_ctl+0x136/0x790 net/ipv4/netfilter/ip_tables.c:1698 [24278] 0 24278 18178 8748 26 4 0 1000 syz-executor.3 [24301] 0 24301 18145 8713 24 3 0 0 syz-executor.2 [24338] 0 24338 18211 8747 26 4 0 1000 syz-executor.3 [24495] 0 24495 34596 8757 28 5 0 0 syz-executor.0 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x68/0xc0 net/netfilter/nf_sockopt.c:122 ip_getsockopt net/ipv4/ip_sockglue.c:1566 [inline] ip_getsockopt+0x118/0x160 net/ipv4/ip_sockglue.c:1551 [24506] 0 24506 5534 314 15 3 0 -1000 udevd [24555] 0 24555 18145 8747 25 4 0 0 syz-executor.2 [24557] 0 24557 34596 8757 28 5 0 0 syz-executor.0 [24566] 0 24566 18211 8745 26 4 0 1000 syz-executor.4 [24646] 0 24646 18211 8752 26 4 0 0 syz-executor.5 tcp_getsockopt net/ipv4/tcp.c:3238 [inline] tcp_getsockopt+0x81/0xc0 net/ipv4/tcp.c:3232 [24772] 0 24772 18145 8743 26 4 0 1000 syz-executor.3 SYSC_getsockopt net/socket.c:1896 [inline] SyS_getsockopt+0x11d/0x1f0 net/socket.c:1878 [24789] 0 24789 18310 8757 26 4 0 0 syz-executor.5 [24796] 0 24796 18145 8709 25 3 0 1000 syz-executor.4 [24824] 0 24824 18145 8713 24 3 0 0 syz-executor.2 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c38a RSP: 002b:00007ffcef8b4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [24826] 0 24826 18244 8747 25 4 0 1000 syz-executor.4 RAX: ffffffffffffffda RBX: 00007ffcef8b4050 RCX: 000000000045c38a [24836] 0 24836 18145 8713 25 3 0 0 syz-executor.0 RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 [24844] 0 24844 18211 8718 25 3 0 0 syz-executor.0 RBP: 0000000000714e80 R08: 00007ffcef8b404c R09: 0000000000004000 [24862] 0 24862 18244 8747 25 4 0 1000 syz-executor.4 [24870] 0 24870 18178 8729 25 3 0 1000 syz-executor.3 [24889] 0 24889 18211 8747 27 4 0 1000 syz-executor.4 R10: 00007ffcef8b4050 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000712cc0 [24898] 0 24898 18211 8739 26 3 0 1000 syz-executor.3 Showing all locks held in the system: [25031] 0 25031 18178 8718 25 3 0 0 syz-executor.5 1 lock held by init/1: [25144] 0 25144 18178 8751 26 4 0 0 syz-executor.5 #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 [25338] 0 25338 18178 8747 25 4 0 0 syz-executor.2 1 lock held by khungtaskd/23: [25359] 0 25359 18145 8745 25 4 0 0 syz-executor.2 #0: [25386] 0 25386 18211 8749 26 4 0 0 syz-executor.1 [25509] 0 25509 18178 8749 26 4 0 0 syz-executor.5 [25555] 0 25555 18145 8714 24 3 0 0 syz-executor.2 [25558] 0 25558 18178 8716 24 3 0 0 syz-executor.2 [25679] 0 25679 18145 8713 24 3 0 0 syz-executor.2 [25732] 0 25732 18244 8724 25 3 0 0 syz-executor.2 [25781] 0 25781 18178 8747 25 4 0 0 syz-executor.2 [25848] 0 25848 18145 8745 26 4 0 1000 syz-executor.3 [25851] 0 25851 18244 8757 27 4 0 0 syz-executor.5 [25887] 0 25887 18211 8749 25 4 0 0 syz-executor.2 [25893] 0 25893 18244 8757 27 4 0 0 syz-executor.5 [25900] 0 25900 18244 8751 26 4 0 1000 syz-executor.3 [25902] 0 25902 18211 8751 26 4 0 0 syz-executor.2 [25956] 0 25956 18244 8751 26 4 0 1000 syz-executor.3 [25959] 0 25959 18211 8751 26 4 0 0 syz-executor.2 ( [26080] 0 26080 18211 8749 26 4 0 0 syz-executor.1 tasklist_lock){.+.+} [26119] 0 26119 18175 8718 25 3 0 0 syz-executor.5 , at: [<00000000ce282205>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4541 3 locks held by udevd/190: #0: (&dup_mmap_sem){.+.+}, at: [<0000000086346dc4>] dup_mmap kernel/fork.c:611 [inline] #0: (&dup_mmap_sem){.+.+}, at: [<0000000086346dc4>] dup_mm kernel/fork.c:1213 [inline] #0: (&dup_mmap_sem){.+.+}, at: [<0000000086346dc4>] copy_mm kernel/fork.c:1268 [inline] #0: (&dup_mmap_sem){.+.+}, at: [<0000000086346dc4>] copy_process.part.0+0x1ff5/0x66c0 kernel/fork.c:1895 #1: (&mm->mmap_sem){++++}, at: [<0000000007eef70c>] dup_mmap kernel/fork.c:612 [inline] #1: (&mm->mmap_sem){++++}, at: [<0000000007eef70c>] dup_mm kernel/fork.c:1213 [inline] #1: (&mm->mmap_sem){++++}, at: [<0000000007eef70c>] copy_mm kernel/fork.c:1268 [inline] #1: (&mm->mmap_sem){++++}, at: [<0000000007eef70c>] copy_process.part.0+0x2011/0x66c0 kernel/fork.c:1895 #2: (&mm->mmap_sem/1 [26126] 0 26126 18241 8722 25 3 0 0 syz-executor.5 ){+.+.}, at: [<000000000b88f636>] dup_mmap kernel/fork.c:621 [inline] ){+.+.}, at: [<000000000b88f636>] dup_mm kernel/fork.c:1213 [inline] ){+.+.}, at: [<000000000b88f636>] copy_mm kernel/fork.c:1268 [inline] ){+.+.}, at: [<000000000b88f636>] copy_process.part.0+0x204c/0x66c0 kernel/fork.c:1895 1 lock held by rs:main Q:Reg/1629: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 2 locks held by getty/1759: #0: (&tty->ldisc_sem){++++}, at: [<000000002d01a41f>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000be241d25>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156 1 lock held by syz-fuzzer/1771: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by syz-fuzzer/1789: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by syz-executor.2/1851: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by syz-executor.1/9000: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by syz-executor.0/17848: #0: (&xt[i].mutex){+.+.}, at: [<0000000065578be3>] xt_find_table_lock+0x35/0x3d0 net/netfilter/x_tables.c:1092 1 lock held by syz-executor.4/19005: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26810: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26819: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26821: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26827: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26829: #0: (&ei->i_mmap_sem){++++} [26135] 0 26135 18211 8749 26 4 0 0 syz-executor.1 , at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26830: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26831: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26832: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26833: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 2 locks held by udevd/26834: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 #1: (&ei->i_mmap_sem){++++} [26225] 0 26225 18211 8750 25 4 0 0 syz-executor.2 , at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26838: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26839: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26841: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26846: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26847: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26848: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26849: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26853: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26856: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26857: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26862: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26863: [26466] 0 26466 18178 8718 26 3 0 0 syz-executor.5 #0: [26475] 0 26475 18145 8714 25 3 0 1000 syz-executor.3 (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26865: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26866: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26867: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26868: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26869: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26870: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26871: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26872: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26873: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26875: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26876: [26476] 0 26476 18179 8749 26 4 0 1000 syz-executor.3 #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26877: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26880: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26881: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26885: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26886: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26887: [26689] 0 26689 5434 240 15 3 0 -1000 udevd #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 2 locks held by udevd/26888: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 #1: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26889: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26890: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26891: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26892: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26894: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 2 locks held by udevd/26897: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 #1: (&ei->i_mmap_sem){++++} [26690] 0 26690 5434 240 15 3 0 -1000 udevd , at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26898: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26899: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26900: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26901: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26902: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26906: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26908: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26909: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26911: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26912: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26913: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26915: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26916: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26918: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26921: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26922: #0: ( [26693] 0 26693 5434 240 15 3 0 -1000 udevd &mm->mmap_sem [26697] 0 26697 5434 240 15 3 0 -1000 udevd ){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26924: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26926: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26928: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26929: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26930: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26931: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26932: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26933: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26935: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26936: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26937: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26939: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26940: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26941: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26942: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26944: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by udevd/26946: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26950: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26951: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by udevd/26952: #0: (&ei->i_mmap_sem){++++}, at: [<00000000e92ea00d>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196 1 lock held by blkid/26956: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/26963: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 1 lock held by blkid/27274: #0: (&mm->mmap_sem){++++}, at: [<000000002b1a4563>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1349 ============================================= [26699] 0 26699 5678 466 15 3 0 -1000 udevd [26700] 0 26700 5678 466 15 3 0 -1000 udevd [26701] 0 26701 5678 466 15 3 0 -1000 udevd [26704] 0 26704 5678 466 15 3 0 -1000 udevd [26706] 0 26706 5678 466 15 3 0 -1000 udevd NMI backtrace for cpu 0 [26709] 0 26709 5678 466 15 3 0 -1000 udevd CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.140+ #39 [26711] 0 26711 5678 466 15 3 0 -1000 udevd Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xca/0x134 lib/dump_stack.c:53 nmi_cpu_backtrace.cold+0x47/0x86 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x119/0x147 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x629/0xbe0 kernel/hung_task.c:274 kthread+0x31f/0x430 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:404 [26715] 0 26715 5678 466 15 3 0 -1000 udevd Sending NMI from CPU 0 to CPUs 1: [26716] 0 26716 5678 466 15 3 0 -1000 udevd NMI backtrace for cpu 1 CPU: 1 PID: 27102 Comm: blkid Not tainted 4.14.140+ #39 task: 00000000efdc0238 task.stack: 000000002ca2f1ed RIP: 0010:native_apic_mem_write+0x8/0x10 arch/x86/include/asm/apic.h:100 RSP: 0000:ffff8881dbb07ef0 EFLAGS: 00000046 RAX: ffffffff8f29c910 RBX: ffffffff914aa880 RCX: 0000000000000020 RDX: 1ffffffff229552d RSI: 0000000000076035 RDI: 0000000000000380 RBP: ffff8881dbb1df40 R08: ffff88821ffff05c R09: ffff88821ffff048 R10: ffff88821ffff057 R11: ffff88821ffff050 R12: 0000000000076035 R13: 0000000000000003 R14: 000000c9ad8b1600 R15: ffff8881dbb24b28 FS: 00007fc592a9c740(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcf188ff8f0 CR3: 00000001a9e60003 CR4: 00000000001606a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: apic_write arch/x86/include/asm/apic.h:395 [inline] lapic_next_event+0x59/0x90 arch/x86/kernel/apic/apic.c:469 clockevents_program_event+0x1fd/0x2e0 kernel/time/clockevents.c:339 tick_program_event+0x78/0xd0 kernel/time/tick-oneshot.c:47 hrtimer_interrupt+0x20b/0x490 kernel/time/hrtimer.c:1370 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] smp_apic_timer_interrupt+0x147/0x650 arch/x86/kernel/apic/apic.c:1062 apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1679 [inline] RIP: 0010:vprintk_emit+0x302/0x330 kernel/printk/printk.c:1916 RSP: 0000:ffff8881a9e077d8 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000007 RBX: 0000000000000297 RCX: 1ffff11033589409 RDX: 0000000000000000 RSI: ffff88819ac4a028 RDI: 0000000000000297 RBP: ffff8881a9e07810 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000052 R13: 0000000000000000 R14: ffff8881a9e07868 R15: ffff8881daae4680 vprintk_func+0x58/0x152 kernel/printk/printk_safe.c:401 printk+0xba/0xed kernel/printk/printk.c:1990 dump_tasks mm/oom_kill.c:396 [inline] dump_header+0x7ab/0x848 mm/oom_kill.c:428 oom_kill_process.cold+0x10/0xde6 mm/oom_kill.c:861 out_of_memory mm/oom_kill.c:1083 [inline] out_of_memory+0x67e/0xa60 mm/oom_kill.c:1023 __alloc_pages_may_oom mm/page_alloc.c:3358 [inline] __alloc_pages_slowpath mm/page_alloc.c:4055 [inline] __alloc_pages_nodemask+0x1988/0x2370 mm/page_alloc.c:4220 __alloc_pages include/linux/gfp.h:461 [inline] __alloc_pages_node include/linux/gfp.h:474 [inline] alloc_pages_node include/linux/gfp.h:488 [inline] alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x1116/0x2700 mm/memory.c:4113 handle_mm_fault+0x2f1/0x6da mm/memory.c:4150 __do_page_fault+0x477/0xbb0 arch/x86/mm/fault.c:1420 page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1122 RIP: 07ff:0x886320 RSP: 91a1af10:0000000000885eb0 EFLAGS: 00000001 Code: 83 3d cc 2c d9 02 01 7f 02 5d c3 89 ef 5d e9 fb e5 fe ff 48 c7 c7 c0 f5 02 92 e8 74 0c 4a 00 eb df 66 90 89 ff 89 b7 00 d0 5f ff 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 53 89 fb