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[syzbot] [ocfs2?] possible deadlock in ocfs2_write_begin_nolock | 0 (2) | 2024/09/12 20:21 |
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[syzbot] [ocfs2?] possible deadlock in ocfs2_write_begin_nolock | 0 (2) | 2024/09/12 20:21 |
======================================================= ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.11.0-rc7-syzkaller-00039-g77f587896757 #0 Not tainted ------------------------------------------------------ syz-executor271/5102 is trying to acquire lock: ffff88804048a610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_inline fs/ocfs2/aops.c:1480 [inline] ffff88804048a610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1583 [inline] ffff88804048a610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x226b/0x4d30 fs/ocfs2/aops.c:1669 but task is already holding lock: ffff888041fdcda0 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_write_begin+0x1d1/0x3a0 fs/ocfs2/aops.c:1901 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&oi->ip_alloc_sem){++++}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 down_write+0x99/0x220 kernel/locking/rwsem.c:1579 ocfs2_try_remove_refcount_tree+0xb6/0x330 fs/ocfs2/refcounttree.c:931 ocfs2_xattr_set+0xa4f/0x1930 fs/ocfs2/xattr.c:3670 ocfs2_set_acl+0x4cb/0x580 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x24a/0x3c0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:955 [inline] vfs_set_acl+0x7fd/0xa60 fs/posix_acl.c:1134 do_setxattr fs/xattr.c:626 [inline] path_setxattr+0x3bd/0x4d0 fs/xattr.c:658 __do_sys_lsetxattr fs/xattr.c:683 [inline] __se_sys_lsetxattr fs/xattr.c:679 [inline] __x64_sys_lsetxattr+0xb8/0xd0 fs/xattr.c:679 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&oi->ip_xattr_sem){++++}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1526 ocfs2_init_acl+0x397/0x930 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1c05/0x2b40 fs/ocfs2/namei.c:408 ocfs2_mkdir+0x1ab/0x480 fs/ocfs2/namei.c:655 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4210 do_mkdirat+0x264/0x3a0 fs/namei.c:4233 __do_sys_mkdirat fs/namei.c:4248 [inline] __se_sys_mkdirat fs/namei.c:4246 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4246 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (jbd2_handle){++++}-{0:0}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 start_this_handle+0x1eb4/0x2110 fs/jbd2/transaction.c:448 jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505 jbd2_journal_start+0x29/0x40 fs/jbd2/transaction.c:544 ocfs2_start_trans+0x3c9/0x700 fs/ocfs2/journal.c:352 ocfs2_mknod+0x150c/0x2b40 fs/ocfs2/namei.c:359 ocfs2_mkdir+0x1ab/0x480 fs/ocfs2/namei.c:655 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4210 do_mkdirat+0x264/0x3a0 fs/namei.c:4233 __do_sys_mkdirat fs/namei.c:4248 [inline] __se_sys_mkdirat fs/namei.c:4246 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4246 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&journal->j_trans_barrier){.+.+}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1526 ocfs2_start_trans+0x3be/0x700 fs/ocfs2/journal.c:350 ocfs2_mknod+0x150c/0x2b40 fs/ocfs2/namei.c:359 ocfs2_mkdir+0x1ab/0x480 fs/ocfs2/namei.c:655 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4210 do_mkdirat+0x264/0x3a0 fs/namei.c:4233 __do_sys_mkdirat fs/namei.c:4248 [inline] __se_sys_mkdirat fs/namei.c:4246 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4246 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (sb_internal#2){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3133 [inline] check_prevs_add kernel/locking/lockdep.c:3252 [inline] validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3868 __lock_acquire+0x137a/0x2040 kernel/locking/lockdep.c:5142 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1676 [inline] sb_start_intwrite include/linux/fs.h:1859 [inline] ocfs2_start_trans+0x2b9/0x700 fs/ocfs2/journal.c:348 ocfs2_write_begin_inline fs/ocfs2/aops.c:1480 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1583 [inline] ocfs2_write_begin_nolock+0x226b/0x4d30 fs/ocfs2/aops.c:1669 ocfs2_write_begin+0x205/0x3a0 fs/ocfs2/aops.c:1903 generic_perform_write+0x399/0x840 mm/filemap.c:4019 ocfs2_file_write_iter+0x17b4/0x1f60 fs/ocfs2/file.c:2455 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa72/0xc90 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: sb_internal#2 --> &oi->ip_xattr_sem --> &oi->ip_alloc_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_alloc_sem); lock(&oi->ip_xattr_sem); lock(&oi->ip_alloc_sem); rlock(sb_internal#2); *** DEADLOCK *** 3 locks held by syz-executor271/5102: #0: ffff88804048a420 (sb_writers#9){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2882 [inline] #0: ffff88804048a420 (sb_writers#9){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586 #1: ffff888041fdd100 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline] #1: ffff888041fdd100 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: ocfs2_file_write_iter+0x46a/0x1f60 fs/ocfs2/file.c:2387 #2: ffff888041fdcda0 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_write_begin+0x1d1/0x3a0 fs/ocfs2/aops.c:1901 stack backtrace: CPU: 0 UID: 0 PID: 5102 Comm: syz-executor271 Not tainted 6.11.0-rc7-syzkaller-00039-g77f587896757 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2186 check_prev_add kernel/locking/lockdep.c:3133 [inline] check_prevs_add kernel/locking/lockdep.c:3252 [inline] validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3868 __lock_acquire+0x137a/0x2040 kernel/locking/lockdep.c:5142 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1676 [inline] sb_start_intwrite include/linux/fs.h:1859 [inline] ocfs2_start_trans+0x2b9/0x700 fs/ocfs2/journal.c:348 ocfs2_write_begin_inline fs/ocfs2/aops.c:1480 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1583 [inline] ocfs2_write_begin_nolock+0x226b/0x4d30 fs/ocfs2/aops.c:1669 ocfs2_write_begin+0x205/0x3a0 fs/ocfs2/aops.c:1903 generic_perform_write+0x399/0x840 mm/filemap.c:4019 ocfs2_file_write_iter+0x17b4/0x1f60 fs/ocfs2/file.c:2455 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa72/0xc90 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa601be8f19 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007ffc8af27958 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007fa601be8f19 RDX: 0000000000000020 RSI: 0000000020000840 RDI: 0000000000000004 RBP: 00007fa601c615f0 R08: 000055556916e4c0 R09: 000055556916e4c0 R10: 000055556916e4c0 R11: 0000000000000246 R12: 00007ffc8af27980 R13: 00007ffc8af27ba8 R14: 431bde82d7b634db R15: 00007fa601c3203b </TASK>
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/09/12 20:20 | upstream | 77f587896757 | 60e1a995 | .config | console log | report | syz / log | C | [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] | ci-snapshot-upstream-root | possible deadlock in ocfs2_write_begin_nolock | |
2024/10/03 19:40 | upstream | 7ec462100ef9 | d7906eff | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-fs | possible deadlock in ocfs2_write_begin_nolock | ||
2024/10/03 19:36 | upstream | 7ec462100ef9 | d7906eff | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-fs | possible deadlock in ocfs2_write_begin_nolock | ||
2024/09/27 14:54 | upstream | 075dbe9f6e3c | 2b1784d6 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in ocfs2_write_begin_nolock | ||
2024/09/24 12:45 | upstream | abf2050f51fd | 5643e0e9 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in ocfs2_write_begin_nolock | ||
2024/09/24 12:45 | upstream | abf2050f51fd | 5643e0e9 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in ocfs2_write_begin_nolock | ||
2024/09/21 13:16 | upstream | 1868f9d0260e | 6f888b75 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in ocfs2_write_begin_nolock | ||
2024/09/20 06:05 | upstream | 2004cef11ea0 | 6f888b75 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in ocfs2_write_begin_nolock | ||
2024/09/19 15:19 | upstream | 2a17bb8c204f | 6f888b75 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in ocfs2_write_begin_nolock | ||
2024/09/18 05:28 | upstream | 2f27fce67173 | c673ca06 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in ocfs2_write_begin_nolock | ||
2024/09/29 05:19 | upstream | 3efc57369a0c | ba29ff75 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | possible deadlock in ocfs2_write_begin_nolock | |||
2024/09/29 05:19 | upstream | 3efc57369a0c | ba29ff75 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | possible deadlock in ocfs2_write_begin_nolock | |||
2024/09/20 10:31 | upstream | 2004cef11ea0 | 6f888b75 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | possible deadlock in ocfs2_write_begin_nolock | |||
2024/09/20 10:30 | upstream | 2004cef11ea0 | 6f888b75 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | possible deadlock in ocfs2_write_begin_nolock | |||
2024/09/15 23:21 | upstream | d42f7708e27c | 08d8a733 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | possible deadlock in ocfs2_write_begin_nolock | |||
2024/09/15 23:21 | upstream | d42f7708e27c | 08d8a733 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | possible deadlock in ocfs2_write_begin_nolock | |||
2024/09/12 19:24 | upstream | 77f587896757 | 60e1a995 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | possible deadlock in ocfs2_write_begin_nolock | |||
2024/09/12 19:24 | upstream | 77f587896757 | 60e1a995 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | possible deadlock in ocfs2_write_begin_nolock | |||
2024/09/11 17:57 | upstream | 8d8d276ba2fb | ede7a22c | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | possible deadlock in ocfs2_write_begin_nolock | |||
2024/09/11 17:57 | upstream | 8d8d276ba2fb | ede7a22c | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | possible deadlock in ocfs2_write_begin_nolock |