syz-executor.5 (20905): drop_caches: 1 ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ kworker/u4:8/20135 is trying to acquire lock: 0000000064df9dbc (&rl->lock){++++}, at: ntfs_read_block fs/ntfs/aops.c:265 [inline] 0000000064df9dbc (&rl->lock){++++}, at: ntfs_readpage+0x1909/0x21b0 fs/ntfs/aops.c:452 but task is already holding lock: 00000000807c0246 (&ni->mrec_lock){+.+.}, at: map_mft_record+0x3c/0xc70 fs/ntfs/mft.c:168 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ni->mrec_lock){+.+.}: map_mft_record+0x3c/0xc70 fs/ntfs/mft.c:168 ntfs_truncate+0x202/0x2820 fs/ntfs/inode.c:2395 ntfs_truncate_vfs fs/ntfs/inode.c:2875 [inline] ntfs_setattr+0x1b6/0x620 fs/ntfs/inode.c:2925 notify_change+0x70b/0xfc0 fs/attr.c:334 do_truncate+0x134/0x1f0 fs/open.c:63 handle_truncate fs/namei.c:3009 [inline] do_last fs/namei.c:3427 [inline] path_openat+0x2308/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&rl->lock){++++}: down_read+0x36/0x80 kernel/locking/rwsem.c:24 ntfs_read_block fs/ntfs/aops.c:265 [inline] ntfs_readpage+0x1909/0x21b0 fs/ntfs/aops.c:452 do_read_cache_page+0x533/0x1170 mm/filemap.c:2828 read_mapping_page include/linux/pagemap.h:402 [inline] ntfs_map_page fs/ntfs/aops.h:89 [inline] ntfs_sync_mft_mirror+0x24f/0x1d00 fs/ntfs/mft.c:494 write_mft_record_nolock+0x13d2/0x16c0 fs/ntfs/mft.c:801 write_mft_record fs/ntfs/mft.h:109 [inline] __ntfs_write_inode+0x609/0xe10 fs/ntfs/inode.c:3064 write_inode fs/fs-writeback.c:1244 [inline] __writeback_single_inode+0x733/0x11d0 fs/fs-writeback.c:1442 writeback_sb_inodes+0x537/0xef0 fs/fs-writeback.c:1647 wb_writeback+0x28d/0xcc0 fs/fs-writeback.c:1820 wb_do_writeback fs/fs-writeback.c:1965 [inline] wb_workfn+0x29b/0x1250 fs/fs-writeback.c:2006 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ni->mrec_lock); lock(&rl->lock); lock(&ni->mrec_lock); lock(&rl->lock); *** DEADLOCK *** 3 locks held by kworker/u4:8/20135: #0: 00000000f97c7fc4 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000d3eecd48 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000807c0246 (&ni->mrec_lock){+.+.}, at: map_mft_record+0x3c/0xc70 fs/ntfs/mft.c:168 stack backtrace: CPU: 0 PID: 20135 Comm: kworker/u4:8 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: writeback wb_workfn (flush-7:3) Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2420 [inline] __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 down_read+0x36/0x80 kernel/locking/rwsem.c:24 ntfs_read_block fs/ntfs/aops.c:265 [inline] ntfs_readpage+0x1909/0x21b0 fs/ntfs/aops.c:452 do_read_cache_page+0x533/0x1170 mm/filemap.c:2828 read_mapping_page include/linux/pagemap.h:402 [inline] ntfs_map_page fs/ntfs/aops.h:89 [inline] ntfs_sync_mft_mirror+0x24f/0x1d00 fs/ntfs/mft.c:494 write_mft_record_nolock+0x13d2/0x16c0 fs/ntfs/mft.c:801 write_mft_record fs/ntfs/mft.h:109 [inline] __ntfs_write_inode+0x609/0xe10 fs/ntfs/inode.c:3064 write_inode fs/fs-writeback.c:1244 [inline] __writeback_single_inode+0x733/0x11d0 fs/fs-writeback.c:1442 writeback_sb_inodes+0x537/0xef0 fs/fs-writeback.c:1647 wb_writeback+0x28d/0xcc0 fs/fs-writeback.c:1820 wb_do_writeback fs/fs-writeback.c:1965 [inline] wb_workfn+0x29b/0x1250 fs/fs-writeback.c:2006 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 syz-executor.5 (20905): drop_caches: 1 REISERFS (device loop1): found reiserfs format "3.6" with non-standard journal netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. REISERFS (device loop1): using ordered data mode ntfs: (device loop3): parse_options(): Invalid mft_zone_multiplier. Using default value, i.e. 1. ntfs: volume version 3.1. reiserfs: using flush barriers ntfs: (device loop3): ntfs_nlstoucs(): Name using character set utf8 contains characters that cannot be converted to Unicode. REISERFS (device loop1): journal params: device loop1, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 ntfs: (device loop3): ntfs_lookup(): Failed to convert name to Unicode. FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 CPU: 1 PID: 21016 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: REISERFS (device loop1): checking transaction log (loop1) __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3088 [inline] prepare_alloc_pages mm/page_alloc.c:4346 [inline] __alloc_pages_nodemask+0x239/0x2890 mm/page_alloc.c:4393 REISERFS (device loop1): Using r5 hash to sort names REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage. syz-executor.5 (20987): drop_caches: 1 __alloc_pages include/linux/gfp.h:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] alloc_pages_vma+0x461/0x780 mm/mempolicy.c:2154 do_huge_pmd_anonymous_page+0x3b4/0x1e60 mm/huge_memory.c:734 create_huge_pmd mm/memory.c:4066 [inline] __handle_mm_fault+0x289c/0x41c0 mm/memory.c:4270 handle_mm_fault+0x436/0xb10 mm/memory.c:4336 faultin_page mm/gup.c:539 [inline] __get_user_pages+0x6f0/0x1710 mm/gup.c:745 __get_user_pages_locked mm/gup.c:916 [inline] get_user_pages_remote+0x220/0x460 mm/gup.c:1108 __access_remote_vm+0x24c/0x5f0 mm/memory.c:4637 syz-executor.5 (20987): drop_caches: 1 get_mm_cmdline fs/proc/base.c:295 [inline] get_task_cmdline fs/proc/base.c:346 [inline] proc_pid_cmdline_read+0x3ba/0x830 fs/proc/base.c:362 __vfs_read+0xf7/0x750 fs/read_write.c:416 vfs_read+0x194/0x3c0 fs/read_write.c:452 ksys_read+0x12b/0x2a0 fs/read_write.c:579 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f20585720c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2056ae4168 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f2058691f80 RCX: 00007f20585720c9 RDX: 00000000fffffed3 RSI: 0000000020000280 RDI: 0000000000000004 RBP: 00007f2056ae41d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffeb85b460f R14: 00007f2056ae4300 R15: 0000000000022000 ntfs: (device loop3): parse_options(): Invalid mft_zone_multiplier. Using default value, i.e. 1. ntfs: volume version 3.1. ntfs: (device loop3): ntfs_nlstoucs(): Name using character set utf8 contains characters that cannot be converted to Unicode. ntfs: (device loop3): ntfs_lookup(): Failed to convert name to Unicode. REISERFS warning (device loop1): reiserfs_fill_super: Cannot allocate commit workqueue REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal ntfs: (device loop3): parse_options(): Invalid mft_zone_multiplier. Using default value, i.e. 1. REISERFS (device loop2): using ordered data mode reiserfs: using flush barriers REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 ntfs: volume version 3.1. REISERFS (device loop2): checking transaction log (loop2) REISERFS (device loop2): Using r5 hash to sort names REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage. ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. __ntfs_error: 20 callbacks suppressed ntfs: (device loop3): parse_options(): Invalid mft_zone_multiplier. Using default value, i.e. 1. ntfs: volume version 3.1. ntfs: (device loop3): ntfs_nlstoucs(): Name using character set utf8 contains characters that cannot be converted to Unicode. ntfs: (device loop3): ntfs_lookup(): Failed to convert name to Unicode. ntfs: (device loop3): parse_options(): Invalid mft_zone_multiplier. Using default value, i.e. 1. ntfs: volume version 3.1. ntfs: (device loop3): ntfs_nlstoucs(): Name using character set utf8 contains characters that cannot be converted to Unicode. ntfs: (device loop3): ntfs_lookup(): Failed to convert name to Unicode. ntfs: (device loop3): parse_options(): Invalid mft_zone_multiplier. Using default value, i.e. 1. ntfs: volume version 3.1. ntfs: (device loop3): ntfs_nlstoucs(): Name using character set utf8 contains characters that cannot be converted to Unicode. ntfs: (device loop3): ntfs_lookup(): Failed to convert name to Unicode. ntfs: (device loop3): parse_options(): Invalid mft_zone_multiplier. Using default value, i.e. 1. ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. __ntfs_error: 21 callbacks suppressed ntfs: (device loop3): ntfs_nlstoucs(): Name using character set utf8 contains characters that cannot be converted to Unicode. ntfs: (device loop3): ntfs_lookup(): Failed to convert name to Unicode.