ci2 starts bisection 2023-07-09 21:20:00.426358397 +0000 UTC m=+191794.006908800 bisecting fixing commit since 0ab06468cbd149aac0d7f216ec00452ff8c74e0b building syzkaller on a4ae4f428721da42ac15f07d6f3b54584dedee27 ensuring issue is reproducible on original commit 0ab06468cbd149aac0d7f216ec00452ff8c74e0b testing commit 0ab06468cbd149aac0d7f216ec00452ff8c74e0b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 1b6714e850ff280c3ec949638a26588260c78cba7111b6989b6cd7df353a8c77 all runs: crashed: kernel BUG in submit_bh_wbc representative crash: kernel BUG in submit_bh_wbc, types: [BUG] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 0ab06468cbd149aac0d7f216ec00452ff8c74e0b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: ed15602ef99bb419fac7246e97ced69f585157151ac7d97439dbc8023ad1e190 all runs: crashed: kernel BUG in submit_bh_wbc representative crash: kernel BUG in submit_bh_wbc, types: [BUG] the bug reproduces without the instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing current HEAD d54cfc420586425d418a53871290cc4a59d33501 testing commit d54cfc420586425d418a53871290cc4a59d33501 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 0a1880c9dced7ec62c00bf25381833e57b337c5226a191986051fb432ac626a0 all runs: crashed: kernel BUG in submit_bh_wbc representative crash: kernel BUG in submit_bh_wbc, types: [BUG] crash still not fixed/happens on the oldest tested release revisions tested: 3, total time: 1h40m26.807188267s (build: 1h9m25.187548008s, test: 11m52.330517507s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Linux 5.15.120 crash: kernel BUG in submit_bh_wbc NILFS (loop0): nilfs_get_block (ino=19): a race condition while inserting a data block at offset=0 ------------[ cut here ]------------ kernel BUG at fs/buffer.c:3017! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 1 PID: 3977 Comm: syz-executor.0 Not tainted 5.15.120-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 RIP: 0010:submit_bh_wbc+0x174/0x180 fs/buffer.c:3017 Code: 48 8b 73 10 e8 8d b5 fe ff 48 89 ef e8 f5 33 89 00 31 c0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 f0 80 62 01 fb e9 f6 fe ff ff 0f 0b <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 66 90 45 31 c0 31 c9 e9 76 fe ff ff RSP: 0018:ffffc9000113fbf8 EFLAGS: 00010246 RAX: 0000000000000004 RBX: ffff888113d62498 RCX: 0000000000000000 RDX: ffff888113d62498 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000003 R10: 00000000ffffe000 R11: 3fffffffffffffff R12: 0000000000000000 R13: ffffc9000113fc98 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f3903868700(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa8661925a0 CR3: 000000010d4f5000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: submit_bh fs/buffer.c:3062 [inline] ll_rw_block+0xa5/0xb0 fs/buffer.c:3112 __block_write_begin_int+0x271/0x560 fs/buffer.c:2042 __block_write_begin fs/buffer.c:2062 [inline] block_write_begin+0x43/0x100 fs/buffer.c:2122 nilfs_write_begin+0x4d/0xa0 fs/nilfs2/inode.c:263 generic_perform_write+0xbf/0x1f0 mm/filemap.c:3776 __generic_file_write_iter+0x166/0x1d0 mm/filemap.c:3871 generic_file_write_iter+0x58/0xa0 mm/filemap.c:3935 call_write_iter include/linux/fs.h:2103 [inline] new_sync_write+0x114/0x1a0 fs/read_write.c:507 vfs_write+0x25f/0x380 fs/read_write.c:594 ksys_write+0x63/0xe0 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f39044f6169 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:00007f3903868168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f3904615f80 RCX: 00007f39044f6169 RDX: 00000000000000a0 RSI: 0000000020000380 RDI: 0000000000000006 RBP: 00007f3904551ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffbe103dbf R14: 00007f3903868300 R15: 0000000000022000 Modules linked in: ---[ end trace 61134e83a5327946 ]--- RIP: 0010:submit_bh_wbc+0x174/0x180 fs/buffer.c:3017 Code: 48 8b 73 10 e8 8d b5 fe ff 48 89 ef e8 f5 33 89 00 31 c0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 f0 80 62 01 fb e9 f6 fe ff ff 0f 0b <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 66 90 45 31 c0 31 c9 e9 76 fe ff ff RSP: 0018:ffffc9000113fbf8 EFLAGS: 00010246 RAX: 0000000000000004 RBX: ffff888113d62498 RCX: 0000000000000000 RDX: ffff888113d62498 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000003 R10: 00000000ffffe000 R11: 3fffffffffffffff R12: 0000000000000000 R13: ffffc9000113fc98 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f3903868700(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055948237b680 CR3: 000000010d4f5000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400