INFO: task syz-executor5:19075 blocked for more than 140 seconds. Not tainted 4.19.0-rc5+ #38 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D23736 19075 5486 0x00000004 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 schedule+0xfe/0x460 kernel/sched/core.c:3517 __rwsem_down_write_failed_common+0xbb9/0x1670 kernel/locking/rwsem-xadd.c:566 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595 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+0xa5/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:738 [inline] process_measurement+0x190f/0x1bf0 security/integrity/ima/ima_main.c:205 ima_file_check+0xe5/0x130 security/integrity/ima/ima_main.c:391 do_last fs/namei.c:3422 [inline] path_openat+0x134d/0x5160 fs/namei.c:3534 do_filp_open+0x255/0x380 fs/namei.c:3564 do_sys_open+0x568/0x700 fs/open.c:1063 __do_sys_openat fs/open.c:1090 [inline] __se_sys_openat fs/open.c:1084 [inline] __x64_sys_openat+0x9d/0x100 fs/open.c:1084 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: Bad RIP value. RSP: 002b:00007f9a78aebc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457579 RDX: 000000000000275a RSI: 0000000020000080 RDI: ffffffffffffff9c RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9a78aec6d4 R13: 00000000004c2b26 R14: 00000000004d4140 R15: 00000000ffffffff INFO: task syz-executor5:19078 blocked for more than 140 seconds. Not tainted 4.19.0-rc5+ #38 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D23752 19078 5486 0x00000004 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 schedule+0xfe/0x460 kernel/sched/core.c:3517 __rwsem_down_write_failed_common+0xbb9/0x1670 kernel/locking/rwsem-xadd.c:566 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595 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+0xa5/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:738 [inline] process_measurement+0xc3e/0x1bf0 security/integrity/ima/ima_main.c:205 ima_file_check+0xe5/0x130 security/integrity/ima/ima_main.c:391 do_last fs/namei.c:3422 [inline] path_openat+0x134d/0x5160 fs/namei.c:3534 do_filp_open+0x255/0x380 fs/namei.c:3564 do_sys_open+0x568/0x700 fs/open.c:1063 ksys_open include/linux/syscalls.h:1276 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: Bad RIP value. RSP: 002b:00007f9a78acac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9a78acb6d4 R13: 00000000004bdb43 R14: 00000000004cc688 R15: 00000000ffffffff INFO: task syz-executor5:19079 blocked for more than 140 seconds. Not tainted 4.19.0-rc5+ #38 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D25496 19079 5486 0x00000004 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 schedule+0xfe/0x460 kernel/sched/core.c:3517 __rwsem_down_write_failed_common+0xbb9/0x1670 kernel/locking/rwsem-xadd.c:566 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595 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+0xa5/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:738 [inline] ext4_fallocate+0x921/0x2300 fs/ext4/extents.c:4957 vfs_fallocate+0x4b4/0x940 fs/open.c:308 ksys_fallocate+0x56/0x90 fs/open.c:331 __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __x64_sys_fallocate+0x97/0xf0 fs/open.c:337 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: Bad RIP value. RSP: 002b:00007f9a78aa9c78 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 000000000072c0e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000004000fff R11: 0000000000000246 R12: 00007f9a78aaa6d4 R13: 00000000004bdc1c R14: 00000000004cc868 R15: 00000000ffffffff INFO: task syz-executor5:19082 blocked for more than 140 seconds. Not tainted 4.19.0-rc5+ #38 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D25496 19082 5486 0x00000004 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 schedule+0xfe/0x460 kernel/sched/core.c:3517 __rwsem_down_write_failed_common+0xbb9/0x1670 kernel/locking/rwsem-xadd.c:566 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595 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+0xa5/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:738 [inline] ext4_fallocate+0x921/0x2300 fs/ext4/extents.c:4957 vfs_fallocate+0x4b4/0x940 fs/open.c:308 ksys_fallocate+0x56/0x90 fs/open.c:331 __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __x64_sys_fallocate+0x97/0xf0 fs/open.c:337 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: Bad RIP value. RSP: 002b:00007f9a78a88c78 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000072c180 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000010001 R11: 0000000000000246 R12: 00007f9a78a896d4 R13: 00000000004bdc1c R14: 00000000004cc868 R15: 00000000ffffffff INFO: task syz-executor5:19083 blocked for more than 140 seconds. Not tainted 4.19.0-rc5+ #38 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D23320 19083 5486 0x00000004 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 schedule+0xfe/0x460 kernel/sched/core.c:3517 __rwsem_down_write_failed_common+0xbb9/0x1670 kernel/locking/rwsem-xadd.c:566 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595 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+0xa5/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:738 [inline] lock_two_nondirectories+0xfb/0x120 fs/inode.c:1007 ext4_move_extents+0x74f/0x3c20 fs/ext4/move_extent.c:599 ext4_ioctl+0x3154/0x4210 fs/ext4/ioctl.c:799 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: Bad RIP value. RSP: 002b:00007f9a78a67c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457579 RDX: 0000000020000040 RSI: 00000000c028660f RDI: 0000000000000003 RBP: 000000000072c220 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9a78a686d4 R13: 00000000004bf5dd R14: 00000000004cf460 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/984: #0: 000000007e581847 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4435 3 locks held by rs:main Q:Reg/5210: #0: 00000000b497120d (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 #1: 000000005b8daaa2 (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2759 [inline] #1: 000000005b8daaa2 (sb_writers#3){.+.+}, at: vfs_write+0x42a/0x560 fs/read_write.c:548 #2: 000000009042766f (&sb->s_type->i_mutex_key#9){++++}, at: inode_trylock include/linux/fs.h:758 [inline] #2: 000000009042766f (&sb->s_type->i_mutex_key#9){++++}, at: ext4_file_write_iter+0x2a1/0x1420 fs/ext4/file.c:232 1 lock held by rsyslogd/5212: #0: 0000000081304ab5 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 2 locks held by getty/5302: #0: 000000008702196c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000008103a022 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5303: #0: 00000000cbab21b4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000004d3f1cdc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5304: #0: 00000000d37e20d8 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000f5fb7a63 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5305: #0: 0000000002840c28 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000009579c5f9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5306: #0: 00000000cb4fe308 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000002cf62f41 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5307: #0: 000000004914f9da (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000e5cb8d11 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5308: #0: 00000000b5aa95a8 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000071319800 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 6 locks held by syz-executor5/19035: 2 locks held by syz-executor5/19075: #0: 000000005b8daaa2 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1566 [inline] #0: 000000005b8daaa2 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 000000009dc420ee (&sb->s_type->i_mutex_key#9){++++}, at: inode_lock include/linux/fs.h:738 [inline] #1: 000000009dc420ee (&sb->s_type->i_mutex_key#9){++++}, at: process_measurement+0x190f/0x1bf0 security/integrity/ima/ima_main.c:205 2 locks held by syz-executor5/19078: #0: 000000005b8daaa2 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1566 [inline] #0: 000000005b8daaa2 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 00000000da02f4ed (&sb->s_type->i_mutex_key#9){++++}, at: inode_lock include/linux/fs.h:738 [inline] #1: 00000000da02f4ed (&sb->s_type->i_mutex_key#9){++++}, at: process_measurement+0xc3e/0x1bf0 security/integrity/ima/ima_main.c:205 2 locks held by syz-executor5/19079: #0: 000000005b8daaa2 (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2759 [inline] #0: 000000005b8daaa2 (sb_writers#3){.+.+}, at: vfs_fallocate+0x72a/0x940 fs/open.c:307 #1: 00000000da02f4ed (&sb->s_type->i_mutex_key#9){++++}, at: inode_lock include/linux/fs.h:738 [inline] #1: 00000000da02f4ed (&sb->s_type->i_mutex_key#9){++++}, at: ext4_fallocate+0x921/0x2300 fs/ext4/extents.c:4957 2 locks held by syz-executor5/19082: #0: 000000005b8daaa2 (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2759 [inline] #0: 000000005b8daaa2 (sb_writers#3){.+.+}, at: vfs_fallocate+0x72a/0x940 fs/open.c:307 #1: 000000009dc420ee (&sb->s_type->i_mutex_key#9){++++}, at: inode_lock include/linux/fs.h:738 [inline] #1: 000000009dc420ee (&sb->s_type->i_mutex_key#9){++++}, at: ext4_fallocate+0x921/0x2300 fs/ext4/extents.c:4957 2 locks held by syz-executor5/19083: #0: 000000005b8daaa2 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1566 [inline] #0: 000000005b8daaa2 (sb_writers#3){.+.+}, at: mnt_want_write_file+0x68/0x110 fs/namespace.c:418 #1: 000000009dc420ee (&sb->s_type->i_mutex_key#9){++++}, at: inode_lock include/linux/fs.h:738 [inline] #1: 000000009dc420ee (&sb->s_type->i_mutex_key#9){++++}, at: lock_two_nondirectories+0xfb/0x120 fs/inode.c:1007 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 984 Comm: khungtaskd Not tainted 4.19.0-rc5+ #38 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+0x1c4/0x2b4 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.3+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed 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:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline] watchdog+0xb3e/0x1050 kernel/hung_task.c:265 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 Sending NMI from CPU 0 to CPUs 1: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.057 msecs NMI backtrace for cpu 1 CPU: 1 PID: 19035 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #38 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x1a/0x50 kernel/kcov.c:101 Code: 89 54 10 f0 4a 89 4c d8 20 4c 89 08 5d c3 66 90 55 48 89 e5 65 48 8b 04 25 40 ee 01 00 65 8b 15 3c 38 83 7e 81 e2 00 01 1f 00 <48> 8b 75 08 75 2b 8b 90 d0 12 00 00 83 fa 02 75 20 48 8b 88 d8 12 RSP: 0018:ffff8801c5657178 EFLAGS: 00000246 RAX: ffff8801c01502c0 RBX: ffff8801cd7c81d8 RCX: ffffffff82110463 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: ffff8801c5657178 R08: ffff8801c01502c0 R09: 1ffffffff1273955 R10: ffffed003b5e4732 R11: ffff8801daf23993 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f9a78b0d700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001bd41f000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_ext_drop_refs+0xbd/0xf0 fs/ext4/extents.c:718 mext_check_coverage.constprop.13+0x27b/0x510 fs/ext4/move_extent.c:105 move_extent_per_page fs/ext4/move_extent.c:323 [inline] ext4_move_extents+0x2784/0x3c20 fs/ext4/move_extent.c:669 ext4_ioctl+0x3154/0x4210 fs/ext4/ioctl.c:799 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9a78b0cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457579 RDX: 0000000020000040 RSI: 00000000c028660f RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9a78b0d6d4 R13: 00000000004bf5dd R14: 00000000004cf460 R15: 00000000ffffffff