INFO: task syz-executor.2:15661 can't die for more than 143 seconds. syz-executor.2 D26712 15661 8861 0x00004004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 io_schedule+0x1c/0x70 kernel/sched/core.c:5799 wait_on_page_bit_common mm/filemap.c:1175 [inline] wait_on_page_bit+0x27c/0xa60 mm/filemap.c:1224 wait_on_page_writeback+0x1b2/0x4f0 mm/page-writeback.c:2822 truncate_inode_pages_range+0xc32/0x1760 mm/truncate.c:448 truncate_inode_pages mm/truncate.c:476 [inline] truncate_pagecache+0x69/0x90 mm/truncate.c:817 truncate_setsize+0x74/0xb0 mm/truncate.c:842 fat_setattr+0xc15/0xe20 fs/fat/file.c:536 notify_change+0xad7/0xfb0 fs/attr.c:337 do_truncate+0x158/0x220 fs/open.c:64 handle_truncate fs/namei.c:3002 [inline] do_last fs/namei.c:3418 [inline] path_openat+0x2dbe/0x4710 fs/namei.c:3529 do_filp_open+0x1a1/0x280 fs/namei.c:3559 do_sys_open+0x3fe/0x5d0 fs/open.c:1097 ksys_open include/linux/syscalls.h:1386 [inline] __do_sys_creat fs/open.c:1155 [inline] __se_sys_creat fs/open.c:1153 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1153 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a639 Code: 03 00 00 48 29 f0 48 3d f8 12 00 00 76 7d 48 81 ec 08 10 00 00 48 89 ac 24 00 10 00 00 48 8d ac 24 00 10 00 00 48 8b 59 20 48 <85> db 75 67 48 8b b4 24 20 10 00 00 8b 8c 24 28 10 00 00 48 89 e7 RSP: 002b:00007fa6c15dac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 000000000045a639 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000700 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6c15db6d4 R13: 00000000004c0ee8 R14: 00000000004d3960 R15: 00000000ffffffff INFO: task syz-executor.2:15661 blocked for more than 143 seconds. Not tainted 5.4.0-rc8-next-20191119-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D26712 15661 8861 0x00004004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 io_schedule+0x1c/0x70 kernel/sched/core.c:5799 wait_on_page_bit_common mm/filemap.c:1175 [inline] wait_on_page_bit+0x27c/0xa60 mm/filemap.c:1224 wait_on_page_writeback+0x1b2/0x4f0 mm/page-writeback.c:2822 truncate_inode_pages_range+0xc32/0x1760 mm/truncate.c:448 truncate_inode_pages mm/truncate.c:476 [inline] truncate_pagecache+0x69/0x90 mm/truncate.c:817 truncate_setsize+0x74/0xb0 mm/truncate.c:842 fat_setattr+0xc15/0xe20 fs/fat/file.c:536 notify_change+0xad7/0xfb0 fs/attr.c:337 do_truncate+0x158/0x220 fs/open.c:64 handle_truncate fs/namei.c:3002 [inline] do_last fs/namei.c:3418 [inline] path_openat+0x2dbe/0x4710 fs/namei.c:3529 do_filp_open+0x1a1/0x280 fs/namei.c:3559 do_sys_open+0x3fe/0x5d0 fs/open.c:1097 ksys_open include/linux/syscalls.h:1386 [inline] __do_sys_creat fs/open.c:1155 [inline] __se_sys_creat fs/open.c:1153 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1153 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a639 Code: 03 00 00 48 29 f0 48 3d f8 12 00 00 76 7d 48 81 ec 08 10 00 00 48 89 ac 24 00 10 00 00 48 8d ac 24 00 10 00 00 48 8b 59 20 48 <85> db 75 67 48 8b b4 24 20 10 00 00 8b 8c 24 28 10 00 00 48 89 e7 RSP: 002b:00007fa6c15dac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 000000000045a639 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000700 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6c15db6d4 R13: 00000000004c0ee8 R14: 00000000004d3960 R15: 00000000ffffffff INFO: task syz-executor.2:15672 can't die for more than 144 seconds. syz-executor.2 D27664 15672 8861 0x00000004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 rwsem_down_write_slowpath+0x706/0xf80 kernel/locking/rwsem.c:1238 __down_write kernel/locking/rwsem.c:1392 [inline] down_write+0x13c/0x150 kernel/locking/rwsem.c:1535 inode_lock include/linux/fs.h:791 [inline] process_measurement+0x16df/0x1850 security/integrity/ima/ima_main.c:230 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:442 do_last fs/namei.c:3416 [inline] path_openat+0x113d/0x4710 fs/namei.c:3529 do_filp_open+0x1a1/0x280 fs/namei.c:3559 do_sys_open+0x3fe/0x5d0 fs/open.c:1097 __do_sys_open fs/open.c:1115 [inline] __se_sys_open fs/open.c:1110 [inline] __x64_sys_open+0x7e/0xc0 fs/open.c:1110 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a639 Code: 03 00 00 48 29 f0 48 3d f8 12 00 00 76 7d 48 81 ec 08 10 00 00 48 89 ac 24 00 10 00 00 48 8d ac 24 00 10 00 00 48 8b 59 20 48 <85> db 75 67 48 8b b4 24 20 10 00 00 8b 8c 24 28 10 00 00 48 89 e7 RSP: 002b:00007fa6c15b9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a639 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6c15ba6d4 R13: 00000000004fb41f R14: 00000000004dccc0 R15: 00000000ffffffff INFO: task syz-executor.2:15672 blocked for more than 144 seconds. Not tainted 5.4.0-rc8-next-20191119-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27664 15672 8861 0x00000004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 rwsem_down_write_slowpath+0x706/0xf80 kernel/locking/rwsem.c:1238 __down_write kernel/locking/rwsem.c:1392 [inline] down_write+0x13c/0x150 kernel/locking/rwsem.c:1535 inode_lock include/linux/fs.h:791 [inline] process_measurement+0x16df/0x1850 security/integrity/ima/ima_main.c:230 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:442 do_last fs/namei.c:3416 [inline] path_openat+0x113d/0x4710 fs/namei.c:3529 do_filp_open+0x1a1/0x280 fs/namei.c:3559 do_sys_open+0x3fe/0x5d0 fs/open.c:1097 __do_sys_open fs/open.c:1115 [inline] __se_sys_open fs/open.c:1110 [inline] __x64_sys_open+0x7e/0xc0 fs/open.c:1110 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a639 Code: 03 00 00 48 29 f0 48 3d f8 12 00 00 76 7d 48 81 ec 08 10 00 00 48 89 ac 24 00 10 00 00 48 8d ac 24 00 10 00 00 48 8b 59 20 48 <85> db 75 67 48 8b b4 24 20 10 00 00 8b 8c 24 28 10 00 00 48 89 e7 RSP: 002b:00007fa6c15b9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a639 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6c15ba6d4 R13: 00000000004fb41f R14: 00000000004dccc0 R15: 00000000ffffffff INFO: task syz-executor.2:15673 can't die for more than 144 seconds. syz-executor.2 D24424 15673 8861 0x00004004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 io_schedule+0x1c/0x70 kernel/sched/core.c:5799 wait_on_page_bit_common mm/filemap.c:1175 [inline] wait_on_page_bit+0x27c/0xa60 mm/filemap.c:1224 wait_on_page_writeback+0x1b2/0x4f0 mm/page-writeback.c:2822 __filemap_fdatawait_range+0x145/0x340 mm/filemap.c:526 file_write_and_wait_range+0x1ac/0x210 mm/filemap.c:786 __generic_file_fsync+0x79/0x200 fs/libfs.c:1000 fat_file_fsync+0x78/0x210 fs/fat/file.c:190 vfs_fsync_range+0x141/0x230 fs/sync.c:197 generic_write_sync include/linux/fs.h:2856 [inline] generic_file_write_iter+0x4ea/0x68e mm/filemap.c:3474 call_write_iter include/linux/fs.h:1902 [inline] do_iter_readv_writev+0x5f8/0x8f0 fs/read_write.c:693 do_iter_write fs/read_write.c:970 [inline] do_iter_write+0x184/0x610 fs/read_write.c:951 vfs_iter_write+0x77/0xb0 fs/read_write.c:983 iter_file_splice_write+0x66d/0xbe0 fs/splice.c:746 do_splice_from fs/splice.c:848 [inline] direct_splice_actor+0x123/0x190 fs/splice.c:1021 splice_direct_to_actor+0x367/0x970 fs/splice.c:976 do_splice_direct+0x1da/0x2a0 fs/splice.c:1064 do_sendfile+0x597/0xd00 fs/read_write.c:1464 __do_sys_sendfile64 fs/read_write.c:1519 [inline] __se_sys_sendfile64 fs/read_write.c:1511 [inline] __x64_sys_sendfile64+0x15a/0x220 fs/read_write.c:1511 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a639 Code: 03 00 00 48 29 f0 48 3d f8 12 00 00 76 7d 48 81 ec 08 10 00 00 48 89 ac 24 00 10 00 00 48 8d ac 24 00 10 00 00 48 8b 59 20 48 <85> db 75 67 48 8b b4 24 20 10 00 00 8b 8c 24 28 10 00 00 48 89 e7 RSP: 002b:00007fa6c1598c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045a639 RDX: 0000000020000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 00008080fffffffe R11: 0000000000000246 R12: 00007fa6c15996d4 R13: 00000000004c83bf R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.2:15673 blocked for more than 145 seconds. Not tainted 5.4.0-rc8-next-20191119-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D24424 15673 8861 0x00004004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 io_schedule+0x1c/0x70 kernel/sched/core.c:5799 wait_on_page_bit_common mm/filemap.c:1175 [inline] wait_on_page_bit+0x27c/0xa60 mm/filemap.c:1224 wait_on_page_writeback+0x1b2/0x4f0 mm/page-writeback.c:2822 __filemap_fdatawait_range+0x145/0x340 mm/filemap.c:526 file_write_and_wait_range+0x1ac/0x210 mm/filemap.c:786 __generic_file_fsync+0x79/0x200 fs/libfs.c:1000 fat_file_fsync+0x78/0x210 fs/fat/file.c:190 vfs_fsync_range+0x141/0x230 fs/sync.c:197 generic_write_sync include/linux/fs.h:2856 [inline] generic_file_write_iter+0x4ea/0x68e mm/filemap.c:3474 call_write_iter include/linux/fs.h:1902 [inline] do_iter_readv_writev+0x5f8/0x8f0 fs/read_write.c:693 do_iter_write fs/read_write.c:970 [inline] do_iter_write+0x184/0x610 fs/read_write.c:951 vfs_iter_write+0x77/0xb0 fs/read_write.c:983 iter_file_splice_write+0x66d/0xbe0 fs/splice.c:746 do_splice_from fs/splice.c:848 [inline] direct_splice_actor+0x123/0x190 fs/splice.c:1021 splice_direct_to_actor+0x367/0x970 fs/splice.c:976 do_splice_direct+0x1da/0x2a0 fs/splice.c:1064 do_sendfile+0x597/0xd00 fs/read_write.c:1464 __do_sys_sendfile64 fs/read_write.c:1519 [inline] __se_sys_sendfile64 fs/read_write.c:1511 [inline] __x64_sys_sendfile64+0x15a/0x220 fs/read_write.c:1511 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a639 Code: Bad RIP value. RSP: 002b:00007fa6c1598c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045a639 RDX: 0000000020000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 00008080fffffffe R11: 0000000000000246 R12: 00007fa6c15996d4 R13: 00000000004c83bf R14: 00000000004de7f0 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/631: #0: ffffffff88fabc00 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 kernel/locking/lockdep.c:5334 2 locks held by getty/8819: #0: ffff8880a58ec090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f392e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156 2 locks held by getty/8820: #0: ffff88808bb92090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f252e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156 2 locks held by getty/8821: #0: ffff88809a5da090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f352e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156 2 locks held by getty/8822: #0: ffff8880962f7090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f312e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156 2 locks held by getty/8823: #0: ffff8880a23b3090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f152e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156 2 locks held by getty/8824: #0: ffff8880a7081090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f2d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156 2 locks held by getty/8825: #0: ffff88809addf090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f092e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156 3 locks held by kworker/u4:13/9231: #0: ffff8880ae837358 (&rq->lock){-.-.}, at: newidle_balance+0xa28/0xe80 kernel/sched/fair.c:10049 #1: ffffffff88fabc00 (rcu_read_lock){....}, at: __update_idle_core+0x45/0x3f0 kernel/sched/fair.c:5697 #2: ffff8880ae827258 (&base->lock){-.-.}, at: lock_timer_base+0x56/0x1b0 kernel/time/timer.c:936 3 locks held by syz-executor.2/15661: #0: ffff8880a9182428 (sb_writers#16){.+.+}, at: sb_start_write include/linux/fs.h:1650 [inline] #0: ffff8880a9182428 (sb_writers#16){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:354 #1: ffff88808c86f830 (&sb->s_type->i_mutex_key#22){++++}, at: inode_lock include/linux/fs.h:791 [inline] #1: ffff88808c86f830 (&sb->s_type->i_mutex_key#22){++++}, at: do_truncate+0x147/0x220 fs/open.c:62 #2: ffff88808c86f6d0 (&ei->truncate_lock){++++}, at: fat_setattr+0xbed/0xe20 fs/fat/file.c:535 1 lock held by syz-executor.2/15672: #0: ffff88808c86f830 (&sb->s_type->i_mutex_key#22){++++}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff88808c86f830 (&sb->s_type->i_mutex_key#22){++++}, at: process_measurement+0x16df/0x1850 security/integrity/ima/ima_main.c:230 1 lock held by syz-executor.2/15673: #0: ffff8880a9182428 (sb_writers#16){.+.+}, at: file_start_write include/linux/fs.h:2885 [inline] #0: ffff8880a9182428 (sb_writers#16){.+.+}, at: do_sendfile+0x9b9/0xd00 fs/read_write.c:1463 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 631 Comm: khungtaskd Not tainted 5.4.0-rc8-next-20191119-syzkaller #0 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+0x197/0x210 lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x23b/0x28b 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:269 [inline] watchdog+0xc8f/0x1350 kernel/hung_task.c:353 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 9231 Comm: kworker/u4:13 Not tainted 5.4.0-rc8-next-20191119-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:lock_release+0x4d9/0x960 kernel/locking/lockdep.c:4493 Code: 07 00 0f 84 7f 01 00 00 48 8b bd 48 ff ff ff 57 9d 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 43 08 00 00 00 00 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 RSP: 0018:ffff888068ff7c00 EFLAGS: 00000282 RAX: dffffc0000000000 RBX: ffffed100d1fef85 RCX: 1ffff1100ae18912 RDX: dffffc0000000000 RSI: 1ffff1100ae1891e RDI: 0000000000000286 RBP: ffff888068ff7cd0 R08: 0000000000000003 R09: ffff8880570c4898 R10: fffffbfff1390db0 R11: ffffffff89c86d87 R12: ffff8880570c4000 R13: ffffffff873de68a R14: ffff888068ff7ca8 R15: ffff8880570c4000 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000900e90 CR3: 00000000a08c8000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_release include/linux/rcupdate.h:213 [inline] rcu_read_unlock include/linux/rcupdate.h:671 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:411 [inline] batadv_nc_worker+0x220/0x760 net/batman-adv/network-coding.c:718 process_one_work+0x9af/0x1740 kernel/workqueue.c:2264 worker_thread+0x98/0xe40 kernel/workqueue.c:2410 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352