[ 227.908690] ------------[ cut here ]------------ [ 227.909523] kernel BUG at fs/jbd2/transaction.c:1629! [ 227.910466] invalid opcode: 0000 [#1] PREEMPT SMP [ 227.911306] CPU: 2 PID: 584 Comm: unlink Tainted: G W 5.19.0-rc6-00115-g4a57a8400075-dirty #697 [ 227.913010] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-buildvm-ppc64le-16.ppc.fedoraproject.org-3.f4 [ 227.915264] RIP: 0010:jbd2_journal_dirty_metadata+0x3c5/0x470 [ 227.916286] Code: 44 24 10 48 83 05 2a 15 97 0b 01 41 83 f8 01 0f 85 89 78 9f 00 48 83 05 30 15 97 0b 01 e9 32 ff ff ff 48 83 05 eb 154 [ 227.918779] RSP: 0018:ffffc90000be7ce0 EFLAGS: 00010202 [ 227.919284] RAX: 0000000001116019 RBX: ffff8881027df000 RCX: ffff88817d11c000 [ 227.919967] RDX: 0000000000000018 RSI: ffffffff82c73015 RDI: 0000000000000000 [ 227.920653] RBP: ffff888101852270 R08: 0000000000000000 R09: ffffc90000be7b70 [ 227.921331] R10: 0000000000000001 R11: 0000000000000001 R12: ffff88810185f258 [ 227.922015] R13: 0000000000000000 R14: ffff88810185f260 R15: ffff88817d11c000 [ 227.922705] FS: 00007fa2fbc564c0(0000) GS:ffff888237c80000(0000) knlGS:0000000000000000 [ 227.923472] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 227.924031] CR2: 000055623fe24008 CR3: 000000017c264000 CR4: 00000000000006e0 [ 227.924725] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 227.925408] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 227.926086] Call Trace: [ 227.926339] <TASK> [ 227.926558] __ext4_handle_dirty_metadata+0xa0/0x290 [ 227.927042] ext4_handle_dirty_dirblock+0x10c/0x1d0 [ 227.927515] ext4_delete_entry+0x104/0x200 [ 227.927912] __ext4_unlink+0x22b/0x360 [ 227.928276] ? __ext4_journal_start_sb+0x1af/0x1f0 [ 227.928745] ext4_unlink+0x275/0x390 [ 227.929097] vfs_unlink+0x20b/0x4c0 [ 227.929439] do_unlinkat+0x42f/0x4c0 [ 227.929792] __x64_sys_unlink+0x37/0x50 [ 227.930159] do_syscall_64+0x35/0x80
Created attachment 301436 [details] a.c
Created attachment 301437 [details] delay_diff
Find an environment with xfs(actually, no ext4 is okay) rootfs. 1. Apply delay_diff to linux kernel source and make kernel image 2. Run kernel, compile and run a.c [ 225.700954] ext4 filesystem being mounted at /root/temp supports timestamps until 2038 (0x7fffffff) [ 225.789487] jbd2_journal_dirty_metadata: set jh ffff88810185f258 BJ_Metadata, trans ffff8881027e0100 [ 225.791319] jbd2_journal_dirty_metadata: set jh ffff88810185f168 BJ_Metadata, trans ffff8881027e0100 [ 225.825894] jbd2_journal_commit_transaction: wait process jh ffff88810185f258 in trans ffff8881027e0100 [ 226.812338] do_get_write_access: set jh ffff88810185f258 frozen data, trans ffff8881027e0100 [ 226.813643] jbd2_journal_dirty_metadata: jh ffff88810185f258 trans ffff8881027e0100 wait trans changed [ 227.801122] EXT4-fs (sda): shut down requested (2) [ 227.802322] Aborting journal on device sda-8. [ 227.826759] abort journal [ 227.905176] jbd2_journal_commit_transaction: wait done process jh ffff88810185f258 in trans ffff8881027e0100 [ 227.906940] jbd2_journal_dirty_metadata: jh ffff88810185f258 trans ffff88817d11c000 wait done trans changed [ 227.908690] ------------[ cut here ]------------ [ 227.909523] kernel BUG at fs/jbd2/transaction.c:1629! [ 227.910466] invalid opcode: 0000 [#1] PREEMPT SMP [ 227.911306] CPU: 2 PID: 584 Comm: unlink Tainted: G W 5.19.0-rc6-00115-g4a57a8400075-dirty #697 [ 227.913010] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-buildvm-ppc64le-16.ppc.fedoraproject.org-3.f4 [ 227.915264] RIP: 0010:jbd2_journal_dirty_metadata+0x3c5/0x470 [ 227.916286] Code: 44 24 10 48 83 05 2a 15 97 0b 01 41 83 f8 01 0f 85 89 78 9f 00 48 83 05 30 15 97 0b 01 e9 32 ff ff ff 48 83 05 eb 154 [ 227.918779] RSP: 0018:ffffc90000be7ce0 EFLAGS: 00010202 [ 227.919284] RAX: 0000000001116019 RBX: ffff8881027df000 RCX: ffff88817d11c000 [ 227.919967] RDX: 0000000000000018 RSI: ffffffff82c73015 RDI: 0000000000000000 [ 227.920653] RBP: ffff888101852270 R08: 0000000000000000 R09: ffffc90000be7b70 [ 227.921331] R10: 0000000000000001 R11: 0000000000000001 R12: ffff88810185f258 [ 227.922015] R13: 0000000000000000 R14: ffff88810185f260 R15: ffff88817d11c000 [ 227.922705] FS: 00007fa2fbc564c0(0000) GS:ffff888237c80000(0000) knlGS:0000000000000000 [ 227.923472] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 227.924031] CR2: 000055623fe24008 CR3: 000000017c264000 CR4: 00000000000006e0 [ 227.924725] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 227.925408] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 227.926086] Call Trace: [ 227.926339] <TASK> [ 227.926558] __ext4_handle_dirty_metadata+0xa0/0x290 [ 227.927042] ext4_handle_dirty_dirblock+0x10c/0x1d0 [ 227.927515] ext4_delete_entry+0x104/0x200 [ 227.927912] __ext4_unlink+0x22b/0x360 [ 227.928276] ? __ext4_journal_start_sb+0x1af/0x1f0 [ 227.928745] ext4_unlink+0x275/0x390 [ 227.929097] vfs_unlink+0x20b/0x4c0 [ 227.929439] do_unlinkat+0x42f/0x4c0 [ 227.929792] __x64_sys_unlink+0x37/0x50 [ 227.930159] do_syscall_64+0x35/0x80 [ 227.930514] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 227.931009] RIP: 0033:0x7fa2fb701b77 [ 227.931369] Code: f0 ff ff 73 01 c3 48 8b 0d 0e d3 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 57 00 008 [ 227.933120] RSP: 002b:00007ffce6ef4f28 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 [ 227.933826] RAX: ffffffffffffffda RBX: 00007ffce6ef5028 RCX: 00007fa2fb701b77 [ 227.934485] RDX: 0000000000000001 RSI: 0000000000000002 RDI: 00007ffce6ef5537 [ 227.935150] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000 [ 227.935822] R10: fffffffffffff40d R11: 0000000000000246 R12: 00007fa2fb9cf1e4 [ 227.936480] R13: 00007ffce6ef5020 R14: 0000000000000000 R15: 0000000000000000 [ 227.937158] </TASK> [ 227.937380] Modules linked in: [ 227.937706] ---[ end trace 0000000000000000 ]---