On 01 Jan 2023 12:27:37 -0800 > syzbot found the following issue on: > > HEAD commit: 1b929c02afd3 Linux 6.2-rc1 > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=153167f2480000 > kernel config: https://syzkaller.appspot.com/x/.config?x=555d27e379d75ff1 > dashboard link: https://syzkaller.appspot.com/bug?extid=bed15dbf10294aa4f2ae > compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17be0848480000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=169a866c480000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/2824225be62b/disk-1b929c02.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/ff607a05be90/vmlinux-1b929c02.xz > kernel image: https://storage.googleapis.com/syzbot-assets/c0b523d63d64/bzImage-1b929c02.xz > mounted in repro: https://storage.googleapis.com/syzbot-assets/34cfdd07fe62/mount_3.gz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+bed15dbf10294aa4f2ae@xxxxxxxxxxxxxxxxxxxxxxxxx > > INFO: task syz-executor394:5211 blocked for more than 143 seconds. > Not tainted 6.2.0-rc1-syzkaller #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor394 state:D stack:25528 pid:5211 ppid:5123 flags:0x00004004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0x9d1/0xe40 kernel/sched/core.c:6555 > schedule+0xcb/0x190 kernel/sched/core.c:6631 > rwsem_down_read_slowpath+0x5fe/0x950 kernel/locking/rwsem.c:1095 > __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260 > mmap_read_lock+0x17/0x50 include/linux/mmap_lock.h:117 > do_user_addr_fault+0x4b7/0xcb0 arch/x86/mm/fault.c:1379 > handle_page_fault arch/x86/mm/fault.c:1519 [inline] > exc_page_fault+0x7a/0x120 arch/x86/mm/fault.c:1575 > asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 > RIP: 0033:0x7faec5f30aa8 > RSP: 002b:00007ffc6b200128 EFLAGS: 00010206 > RAX: 00007faec5f82c10 RBX: 00007faec5f811d8 RCX: 0000000000000001 > RDX: 00007faec5e9df50 RSI: 0000000000000000 RDI: 00007faec5f82c10 > RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000010 > R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 > R13: 0000000000000001 R14: 00007faec5f88420 R15: 0000000000000001 > </TASK> > INFO: task syz-executor394:5212 blocked for more than 143 seconds. > Not tainted 6.2.0-rc1-syzkaller #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor394 state:D stack:26872 pid:5212 ppid:5123 flags:0x00004004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0x9d1/0xe40 kernel/sched/core.c:6555 > schedule+0xcb/0x190 kernel/sched/core.c:6631 > rwsem_down_read_slowpath+0x5fe/0x950 kernel/locking/rwsem.c:1095 > __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260 > mmap_read_lock+0x17/0x50 include/linux/mmap_lock.h:117 > do_user_addr_fault+0x4b7/0xcb0 arch/x86/mm/fault.c:1379 > handle_page_fault arch/x86/mm/fault.c:1519 [inline] > exc_page_fault+0x7a/0x120 arch/x86/mm/fault.c:1575 > asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 > RIP: 0010:copy_user_enhanced_fast_string+0xa/0x40 arch/x86/lib/copy_user_64.S:166 > Code: ff c9 75 f2 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 8d 0c ca 89 ca eb 20 0f 01 cb 83 fa 40 72 38 89 d1 <f3> a4 31 c0 0f 01 ca c3 89 ca eb 0a 66 2e 0f 1f 84 00 00 00 00 00 > RSP: 0018:ffffc900043bfa38 EFLAGS: 00050206 > RAX: ffffffff84434c01 RBX: 00007fffffffe000 RCX: 0000000000001000 > RDX: 0000000000001000 RSI: 000000002042f000 RDI: ffff8880736be000 > RBP: ffff888144ecb010 R08: dffffc0000000000 R09: ffffed100e6d7e00 > R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000001000 > R13: 0000000000001000 R14: ffff8880736be000 R15: 000000002042f000 > copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] > raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline] > _copy_from_user+0xf0/0x160 lib/usercopy.c:16 > copy_from_user include/linux/uaccess.h:161 [inline] > snd_rawmidi_kernel_write1+0x3bd/0x660 sound/core/rawmidi.c:1547 > snd_rawmidi_write+0x615/0xbe0 sound/core/rawmidi.c:1616 > vfs_write+0x2e5/0xbb0 fs/read_write.c:582 > ksys_write+0x19b/0x2c0 fs/read_write.c:637 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x63/0xcd > RIP: 0033:0x7faec5edf939 > RSP: 002b:00007faec5e8b2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 00007faec5f837e0 RCX: 00007faec5edf939 > RDX: 00000000fffffd2c RSI: 0000000020000000 RDI: 0000000000000004 > RBP: 00007faec5f50808 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 6c75727363616f6e > R13: 6573726168636f69 R14: 0030656c69662f2e R15: 00007faec5f837e8 > </TASK> > INFO: task syz-executor394:5214 blocked for more than 144 seconds. > Not tainted 6.2.0-rc1-syzkaller #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor394 state:D stack:23504 pid:5214 ppid:5123 flags:0x00004004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0x9d1/0xe40 kernel/sched/core.c:6555 > schedule+0xcb/0x190 kernel/sched/core.c:6631 > schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6690 > __mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679 > __mutex_lock kernel/locking/mutex.c:747 [inline] > mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 > ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] > attr_data_get_block+0x4a6/0x2e40 fs/ntfs3/attrib.c:919 > ntfs_get_block_vbo+0x374/0xd20 fs/ntfs3/inode.c:573 > do_mpage_readpage+0x98b/0x1bb0 fs/mpage.c:208 > mpage_read_folio+0x103/0x1d0 fs/mpage.c:379 > filemap_read_folio+0x1ba/0x7f0 mm/filemap.c:2426 > filemap_update_page+0x3ca/0x550 mm/filemap.c:2511 > filemap_get_pages+0x8d8/0x1110 mm/filemap.c:2624 > filemap_read+0x3e7/0xee0 mm/filemap.c:2694 > call_read_iter include/linux/fs.h:2180 [inline] > generic_file_splice_read+0x24e/0x650 fs/splice.c:309 > do_splice_to fs/splice.c:793 [inline] > splice_direct_to_actor+0x41b/0xc00 fs/splice.c:865 > do_splice_direct+0x2a0/0x3f0 fs/splice.c:974 > do_sendfile+0x641/0xfd0 fs/read_write.c:1255 > __do_sys_sendfile64 fs/read_write.c:1323 [inline] > __se_sys_sendfile64+0x178/0x1e0 fs/read_write.c:1309 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x63/0xcd > RIP: 0033:0x7faec5edf939 > RSP: 002b:00007faec5e6a2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 > RAX: ffffffffffffffda RBX: 00007faec5f837f0 RCX: 00007faec5edf939 > RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006 > RBP: 00007faec5f50808 R08: 0000000000000000 R09: 0000000000000000 > R10: 0001000000201005 R11: 0000000000000246 R12: 6c75727363616f6e > R13: 6573726168636f69 R14: 0030656c69662f2e R15: 00007faec5f837f8 > </TASK> > INFO: task syz-executor394:5221 blocked for more than 145 seconds. > Not tainted 6.2.0-rc1-syzkaller #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor394 state:D stack:25448 pid:5221 ppid:5123 flags:0x00004004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0x9d1/0xe40 kernel/sched/core.c:6555 > schedule+0xcb/0x190 kernel/sched/core.c:6631 > schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6690 > __mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679 > __mutex_lock kernel/locking/mutex.c:747 [inline] > mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 > ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] > attr_data_get_block+0x4a6/0x2e40 fs/ntfs3/attrib.c:919 > ntfs_file_mmap+0x4cc/0x780 fs/ntfs3/file.c:296 > call_mmap include/linux/fs.h:2191 [inline] > mmap_region+0x1022/0x1e60 mm/mmap.c:2621 > do_mmap+0x8d9/0xf30 mm/mmap.c:1411 > vm_mmap_pgoff+0x1e5/0x2f0 mm/util.c:520 > ksys_mmap_pgoff+0x48c/0x6d0 mm/mmap.c:1457 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x63/0xcd > RIP: 0033:0x7faec5edf939 > RSP: 002b:00007faebdc492e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 > RAX: ffffffffffffffda RBX: 00007faec5f83800 RCX: 00007faec5edf939 > RDX: 0000000000800006 RSI: 0000000002047ffb RDI: 0000000020001000 > RBP: 00007faec5f50808 R08: 0000000000000008 R09: 0000000000000000 > R10: 0000000000000011 R11: 0000000000000246 R12: 6c75727363616f6e > R13: 6573726168636f69 R14: 0030656c69662f2e R15: 00007faec5f83808 > </TASK> > INFO: task syz-executor394:5222 blocked for more than 145 seconds. > Not tainted 6.2.0-rc1-syzkaller #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor394 state:D stack:26216 pid:5222 ppid:5123 flags:0x00004004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0x9d1/0xe40 kernel/sched/core.c:6555 > schedule+0xcb/0x190 kernel/sched/core.c:6631 > io_schedule+0x83/0x100 kernel/sched/core.c:8811 > folio_wait_bit_common+0x8ca/0x1390 mm/filemap.c:1297 > folio_lock include/linux/pagemap.h:938 [inline] > truncate_inode_pages_range+0xc8d/0x1650 mm/truncate.c:421 > truncate_inode_pages mm/truncate.c:448 [inline] > truncate_pagecache mm/truncate.c:743 [inline] > truncate_setsize+0xcb/0xf0 mm/truncate.c:768 > ntfs_truncate fs/ntfs3/file.c:395 [inline] > ntfs3_setattr+0x5a5/0xca0 fs/ntfs3/file.c:696 > notify_change+0xe50/0x1100 fs/attr.c:482 > do_truncate+0x219/0x300 fs/open.c:65 > handle_truncate fs/namei.c:3216 [inline] > do_open fs/namei.c:3561 [inline] > path_openat+0x273d/0x2de0 fs/namei.c:3714 > do_filp_open+0x275/0x500 fs/namei.c:3741 > do_sys_openat2+0x13b/0x500 fs/open.c:1310 > do_sys_open fs/open.c:1326 [inline] > __do_sys_creat fs/open.c:1402 [inline] > __se_sys_creat fs/open.c:1396 [inline] > __x64_sys_creat+0x11f/0x160 fs/open.c:1396 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x63/0xcd > RIP: 0033:0x7faec5edf939 > RSP: 002b:00007faebdc282f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 > RAX: ffffffffffffffda RBX: 00007faec5f83810 RCX: 00007faec5edf939 > RDX: 00007faec5edf939 RSI: 0000000000000000 RDI: 0000000020000000 > RBP: 00007faec5f50808 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 6c75727363616f6e > R13: 6573726168636f69 R14: 0030656c69662f2e R15: 00007faec5f83818 > </TASK> > INFO: task syz-executor394:6046 blocked for more than 146 seconds. > Not tainted 6.2.0-rc1-syzkaller #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor394 state:D stack:26328 pid:6046 ppid:5125 flags:0x00004004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0x9d1/0xe40 kernel/sched/core.c:6555 > schedule+0xcb/0x190 kernel/sched/core.c:6631 > rwsem_down_read_slowpath+0x5fe/0x950 kernel/locking/rwsem.c:1095 > __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260 > mmap_read_lock+0x17/0x50 include/linux/mmap_lock.h:117 > do_user_addr_fault+0x4b7/0xcb0 arch/x86/mm/fault.c:1379 > handle_page_fault arch/x86/mm/fault.c:1519 [inline] > exc_page_fault+0x7a/0x120 arch/x86/mm/fault.c:1575 > asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 > RIP: 0033:0x7faec5f30aa8 > RSP: 002b:00007ffc6b200128 EFLAGS: 00010206 > RAX: 00007faec5f82c10 RBX: 00007faec5f811d8 RCX: 0000000000000001 > RDX: 00007faec5e9df50 RSI: 0000000000000000 RDI: 00007faec5f82c10 > RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000010 > R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 > R13: 0000000000000001 R14: 00007faec5f88420 R15: 0000000000000001 > </TASK> > INFO: task syz-executor394:6047 blocked for more than 147 seconds. > Not tainted 6.2.0-rc1-syzkaller #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor394 state:D stack:25656 pid:6047 ppid:5125 flags:0x00004004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0x9d1/0xe40 kernel/sched/core.c:6555 > schedule+0xcb/0x190 kernel/sched/core.c:6631 > rwsem_down_read_slowpath+0x5fe/0x950 kernel/locking/rwsem.c:1095 > __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260 > mmap_read_lock+0x17/0x50 include/linux/mmap_lock.h:117 > do_user_addr_fault+0x4b7/0xcb0 arch/x86/mm/fault.c:1379 > handle_page_fault arch/x86/mm/fault.c:1519 [inline] > exc_page_fault+0x7a/0x120 arch/x86/mm/fault.c:1575 > asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 > RIP: 0010:copy_user_enhanced_fast_string+0xa/0x40 arch/x86/lib/copy_user_64.S:166 > Code: ff c9 75 f2 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 8d 0c ca 89 ca eb 20 0f 01 cb 83 fa 40 72 38 89 d1 <f3> a4 31 c0 0f 01 ca c3 89 ca eb 0a 66 2e 0f 1f 84 00 00 00 00 00 > RSP: 0018:ffffc900064b7a38 EFLAGS: 00050206 > RAX: ffffffff84434c01 RBX: 00007fffffffe000 RCX: 0000000000001000 > RDX: 0000000000001000 RSI: 0000000020f37000 RDI: ffff88807f772000 > RBP: ffff888023d7f210 R08: dffffc0000000000 R09: ffffed100feee600 > R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000001000 > R13: 0000000000001000 R14: ffff88807f772000 R15: 0000000020f37000 > copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] > raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline] > _copy_from_user+0xf0/0x160 lib/usercopy.c:16 > copy_from_user include/linux/uaccess.h:161 [inline] > snd_rawmidi_kernel_write1+0x3bd/0x660 sound/core/rawmidi.c:1547 > snd_rawmidi_write+0x615/0xbe0 sound/core/rawmidi.c:1616 > vfs_write+0x2e5/0xbb0 fs/read_write.c:582 > ksys_write+0x19b/0x2c0 fs/read_write.c:637 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x63/0xcd > RIP: 0033:0x7faec5edf939 > RSP: 002b:00007faec5e8b2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 00007faec5f837e0 RCX: 00007faec5edf939 > RDX: 00000000fffffd2c RSI: 0000000020000000 RDI: 0000000000000004 > RBP: 00007faec5f50808 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 6c75727363616f6e > R13: 6573726168636f69 R14: 0030656c69662f2e R15: 00007faec5f837e8 > </TASK> > INFO: task syz-executor394:6048 blocked for more than 147 seconds. > Not tainted 6.2.0-rc1-syzkaller #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor394 state:D stack:24072 pid:6048 ppid:5125 flags:0x00004004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0x9d1/0xe40 kernel/sched/core.c:6555 > schedule+0xcb/0x190 kernel/sched/core.c:6631 > schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6690 > __mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679 > __mutex_lock kernel/locking/mutex.c:747 [inline] > mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 > ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] > attr_data_get_block+0x4a6/0x2e40 fs/ntfs3/attrib.c:919 > ntfs_get_block_vbo+0x374/0xd20 fs/ntfs3/inode.c:573 > do_mpage_readpage+0x98b/0x1bb0 fs/mpage.c:208 > mpage_read_folio+0x103/0x1d0 fs/mpage.c:379 > filemap_read_folio+0x1ba/0x7f0 mm/filemap.c:2426 > filemap_update_page+0x3ca/0x550 mm/filemap.c:2511 > filemap_get_pages+0x8d8/0x1110 mm/filemap.c:2624 > filemap_read+0x3e7/0xee0 mm/filemap.c:2694 > call_read_iter include/linux/fs.h:2180 [inline] > generic_file_splice_read+0x24e/0x650 fs/splice.c:309 > do_splice_to fs/splice.c:793 [inline] > splice_direct_to_actor+0x41b/0xc00 fs/splice.c:865 > do_splice_direct+0x2a0/0x3f0 fs/splice.c:974 > do_sendfile+0x641/0xfd0 fs/read_write.c:1255 > __do_sys_sendfile64 fs/read_write.c:1323 [inline] > __se_sys_sendfile64+0x178/0x1e0 fs/read_write.c:1309 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x63/0xcd > RIP: 0033:0x7faec5edf939 > RSP: 002b:00007faec5e6a2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 > RAX: ffffffffffffffda RBX: 00007faec5f837f0 RCX: 00007faec5edf939 > RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006 > RBP: 00007faec5f50808 R08: 0000000000000000 R09: 0000000000000000 > R10: 0001000000201005 R11: 0000000000000246 R12: 6c75727363616f6e > R13: 6573726168636f69 R14: 0030656c69662f2e R15: 00007faec5f837f8 > </TASK> > INFO: task syz-executor394:6055 blocked for more than 148 seconds. > Not tainted 6.2.0-rc1-syzkaller #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor394 state:D stack:25448 pid:6055 ppid:5125 flags:0x00004004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0x9d1/0xe40 kernel/sched/core.c:6555 > schedule+0xcb/0x190 kernel/sched/core.c:6631 > schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6690 > __mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679 > __mutex_lock kernel/locking/mutex.c:747 [inline] > mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 > ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] > attr_data_get_block+0x4a6/0x2e40 fs/ntfs3/attrib.c:919 > ntfs_file_mmap+0x4cc/0x780 fs/ntfs3/file.c:296 > call_mmap include/linux/fs.h:2191 [inline] > mmap_region+0x1022/0x1e60 mm/mmap.c:2621 > do_mmap+0x8d9/0xf30 mm/mmap.c:1411 > vm_mmap_pgoff+0x1e5/0x2f0 mm/util.c:520 > ksys_mmap_pgoff+0x48c/0x6d0 mm/mmap.c:1457 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x63/0xcd > RIP: 0033:0x7faec5edf939 > RSP: 002b:00007faebdc492e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 > RAX: ffffffffffffffda RBX: 00007faec5f83800 RCX: 00007faec5edf939 > RDX: 0000000000800006 RSI: 0000000002047ffb RDI: 0000000020001000 > RBP: 00007faec5f50808 R08: 0000000000000008 R09: 0000000000000000 > R10: 0000000000000011 R11: 0000000000000246 R12: 6c75727363616f6e > R13: 6573726168636f69 R14: 0030656c69662f2e R15: 00007faec5f83808 > </TASK> > INFO: task syz-executor394:6058 blocked for more than 149 seconds. > Not tainted 6.2.0-rc1-syzkaller #0 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:syz-executor394 state:D stack:26216 pid:6058 ppid:5125 flags:0x00004004 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5244 [inline] > __schedule+0x9d1/0xe40 kernel/sched/core.c:6555 > schedule+0xcb/0x190 kernel/sched/core.c:6631 > io_schedule+0x83/0x100 kernel/sched/core.c:8811 > folio_wait_bit_common+0x8ca/0x1390 mm/filemap.c:1297 > folio_lock include/linux/pagemap.h:938 [inline] > truncate_inode_pages_range+0xc8d/0x1650 mm/truncate.c:421 > truncate_inode_pages mm/truncate.c:448 [inline] > truncate_pagecache mm/truncate.c:743 [inline] > truncate_setsize+0xcb/0xf0 mm/truncate.c:768 > ntfs_truncate fs/ntfs3/file.c:395 [inline] > ntfs3_setattr+0x5a5/0xca0 fs/ntfs3/file.c:696 > notify_change+0xe50/0x1100 fs/attr.c:482 > do_truncate+0x219/0x300 fs/open.c:65 > handle_truncate fs/namei.c:3216 [inline] > do_open fs/namei.c:3561 [inline] > path_openat+0x273d/0x2de0 fs/namei.c:3714 > do_filp_open+0x275/0x500 fs/namei.c:3741 > do_sys_openat2+0x13b/0x500 fs/open.c:1310 > do_sys_open fs/open.c:1326 [inline] > __do_sys_creat fs/open.c:1402 [inline] > __se_sys_creat fs/open.c:1396 [inline] > __x64_sys_creat+0x11f/0x160 fs/open.c:1396 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x63/0xcd > RIP: 0033:0x7faec5edf939 > RSP: 002b:00007faebdc282f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 > RAX: ffffffffffffffda RBX: 00007faec5f83810 RCX: 00007faec5edf939 > RDX: 00007faec5edf939 RSI: 0000000000000000 RDI: 0000000020000000 > RBP: 00007faec5f50808 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 6c75727363616f6e > R13: 6573726168636f69 R14: 0030656c69662f2e R15: 00007faec5f83818 > </TASK> > > Showing all locks held in the system: > 1 lock held by rcu_tasks_kthre/12: > #0: ffffffff8d523910 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507 > 1 lock held by rcu_tasks_trace/13: > #0: ffffffff8d524110 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507 > 1 lock held by khungtaskd/28: > #0: ffffffff8d523740 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 > 2 locks held by getty/4749: > #0: ffff88814aad8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 > #1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2177 > 1 lock held by syz-executor394/5211: > #0: ffff88802c7bc758 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock+0x17/0x50 include/linux/mmap_lock.h:117 > 1 lock held by syz-executor394/5212: > #0: ffff88802c7bc758 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock+0x17/0x50 include/linux/mmap_lock.h:117 > 3 locks held by syz-executor394/5214: > #0: ffff88801ee04460 (sb_writers#9){.+.+}-{0:0}, at: do_sendfile+0x61c/0xfd0 fs/read_write.c:1254 > #1: ffff888073930ca0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] > #1: ffff888073930ca0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_update_page+0x72/0x550 mm/filemap.c:2478 > #2: ffff888073930860 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] > #2: ffff888073930860 (&ni->ni_lock/4){+.+.}-{3:3}, at: attr_data_get_block+0x4a6/0x2e40 fs/ntfs3/attrib.c:919 > 2 locks held by syz-executor394/5221: > #0: ffff88802c7bc758 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] > #0: ffff88802c7bc758 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x18f/0x2f0 mm/util.c:518 > #1: ffff888073930860 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] > #1: ffff888073930860 (&ni->ni_lock/4){+.+.}-{3:3}, at: attr_data_get_block+0x4a6/0x2e40 fs/ntfs3/attrib.c:919 > 3 locks held by syz-executor394/5222: > #0: ffff88801ee04460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:508 > #1: ffff888073930b00 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline] > #1: ffff888073930b00 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: do_truncate+0x205/0x300 fs/open.c:63 > #2: ffff888073930860 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] > #2: ffff888073930860 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_truncate fs/ntfs3/file.c:393 [inline] > #2: ffff888073930860 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs3_setattr+0x596/0xca0 fs/ntfs3/file.c:696 Even though folio lock is printed in the call trace of syz-executor394/5222 folio_lock include/linux/pagemap.h:938 [inline] no lockdep radar exists for it in the sake of lock, which makes it harder than expected or impossible to find the cause of task hung reported. > 1 lock held by syz-executor394/6046: > #0: ffff888018eead18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock+0x17/0x50 include/linux/mmap_lock.h:117 > 1 lock held by syz-executor394/6047: > #0: ffff888018eead18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock+0x17/0x50 include/linux/mmap_lock.h:117 > 3 locks held by syz-executor394/6048: > #0: ffff888021b06460 (sb_writers#9){.+.+}-{0:0}, at: do_sendfile+0x61c/0xfd0 fs/read_write.c:1254 > #1: ffff888075aec7a0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] > #1: ffff888075aec7a0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_update_page+0x72/0x550 mm/filemap.c:2478 > #2: ffff888075aec360 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] > #2: ffff888075aec360 (&ni->ni_lock/4){+.+.}-{3:3}, at: attr_data_get_block+0x4a6/0x2e40 fs/ntfs3/attrib.c:919 > 2 locks held by syz-executor394/6055: > #0: ffff888018eead18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] > #0: ffff888018eead18 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x18f/0x2f0 mm/util.c:518 > #1: ffff888075aec360 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] > #1: ffff888075aec360 (&ni->ni_lock/4){+.+.}-{3:3}, at: attr_data_get_block+0x4a6/0x2e40 fs/ntfs3/attrib.c:919 > 3 locks held by syz-executor394/6058: > #0: ffff888021b06460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:508 > #1: ffff888075aec600 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline] > #1: ffff888075aec600 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: do_truncate+0x205/0x300 fs/open.c:63 > #2: ffff888075aec360 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] > #2: ffff888075aec360 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_truncate fs/ntfs3/file.c:393 [inline] > #2: ffff888075aec360 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs3_setattr+0x596/0xca0 fs/ntfs3/file.c:696 Ditto. > 1 lock held by syz-executor394/8235: > #0: ffff88807efb8a18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] > #0: ffff88807efb8a18 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x18f/0x2f0 mm/util.c:518 > 1 lock held by syz-executor394/8237: > #0: ffff8880b993a1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537 > 4 locks held by syz-executor394/8253: > > ============================================= > > NMI backtrace for cpu 0 > CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc1-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 > Call Trace: > <TASK> > __dump_stack lib/dump_stack.c:88 [inline] > dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 > nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111 > nmi_trigger_cpumask_backtrace+0x19b/0x3e0 lib/nmi_backtrace.c:62 > trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] > check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] > watchdog+0xcd5/0xd20 kernel/hung_task.c:377 > kthread+0x266/0x300 kernel/kthread.c:376 > ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 > </TASK> > Sending NMI from CPU 0 to CPUs 1: > NMI backtrace for cpu 1 > CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted 6.2.0-rc1-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 > RIP: 0010:unwind_next_frame+0x146/0x24c0 arch/x86/kernel/unwind_orc.c:467 > Code: 48 89 df e8 8c 44 a6 00 49 b9 00 00 00 00 00 fc ff df f6 03 03 0f 85 96 0f 00 00 48 8b 04 24 4c 8d 78 35 4c 89 fd 48 c1 ed 03 <42> 8a 44 0d 00 84 c0 0f 85 99 1b 00 00 4d 0f be 27 48 8b 44 24 30 > RSP: 0018:ffffc900001b7500 EFLAGS: 00000a03 > RAX: ffffc900001b75e0 RBX: 0000000000000000 RCX: ffffffff92168003 > RDX: dffffc0000000000 RSI: ffffffff8155e5a1 RDI: 0000000000000001 > RBP: 1ffff92000036ec2 R08: 0000000000000007 R09: dffffc0000000000 > R10: fffff52000036ec8 R11: 1ffff92000036ec6 R12: ffffc900001b7618 > R13: ffffc900001b7628 R14: ffffffff8155e5a1 R15: ffffc900001b7615 > FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000020024000 CR3: 0000000022990000 CR4: 00000000003506e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > <TASK> > arch_stack_walk+0x112/0x140 arch/x86/kernel/stacktrace.c:25 > stack_trace_save+0x12d/0x1f0 kernel/stacktrace.c:122 > kasan_save_stack mm/kasan/common.c:45 [inline] > kasan_set_track+0x4c/0x70 mm/kasan/common.c:52 > kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:518 > ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 > kasan_slab_free include/linux/kasan.h:177 [inline] > slab_free_hook mm/slub.c:1781 [inline] > slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1807 > slab_free mm/slub.c:3787 [inline] > kmem_cache_free+0x94/0x1d0 mm/slub.c:3809 > rcu_do_batch kernel/rcu/tree.c:2246 [inline] > rcu_core+0xa91/0x1790 kernel/rcu/tree.c:2506 > __do_softirq+0x277/0x75b kernel/softirq.c:571 > run_ksoftirqd+0xc1/0x120 kernel/softirq.c:934 > smpboot_thread_fn+0x533/0xa10 kernel/smpboot.c:164 > kthread+0x266/0x300 kernel/kthread.c:376 > ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 > </TASK> > INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.096 msecs > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > syzbot can test patches for this issue, for details see: > https://goo.gl/tpsmEJ#testing-patches
