Hello,

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.... vmlinux: https://storage.googleapis.com/syzbot-assets/ff607a05be90/vmlinux-1b929c02.x... kernel image: https://storage.googleapis.com/syzbot-assets/c0b523d63d64/bzImage-1b929c02.x... 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@syzkaller.appspotmail.com

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 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 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

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