ci2 starts bisection 2023-05-26 22:30:20.053904129 +0000 UTC m=+18313.015343092 bisecting fixing commit since fff5a5e7f528b2ed2c335991399a766c2cf01103 building syzkaller on f94b4a29b579b3de9aab3b41915e3663e6f7094e ensuring issue is reproducible on original commit fff5a5e7f528b2ed2c335991399a766c2cf01103 testing commit fff5a5e7f528b2ed2c335991399a766c2cf01103 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: df4c640252f7987432ee98b9a0838362f5459adc27db534690c5e531bab6dfd8 run #0: crashed: KASAN: out-of-bounds Read in ext4_xattr_set_entry run #1: crashed: WARNING in ext4_da_update_reserve_space run #2: crashed: WARNING in ext4_da_update_reserve_space run #3: crashed: WARNING in ext4_da_update_reserve_space run #4: crashed: WARNING in ext4_da_update_reserve_space run #5: crashed: WARNING in ext4_da_update_reserve_space run #6: crashed: WARNING in ext4_da_update_reserve_space run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK reproducer seems to be flaky testing current HEAD a92c9ab69f6696b26ef0c1ca3e8b922d1fc82e86 testing commit a92c9ab69f6696b26ef0c1ca3e8b922d1fc82e86 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: ea40a2e98772e3083b0f39a7d4612078deae8534b145eda1e05b789fcb1ee9d2 run #0: crashed: WARNING in ext4_da_update_reserve_space run #1: crashed: WARNING in ext4_da_update_reserve_space run #2: crashed: WARNING in ext4_da_update_reserve_space run #3: crashed: WARNING in ext4_da_update_reserve_space run #4: crashed: WARNING in ext4_da_update_reserve_space run #5: crashed: WARNING in ext4_da_update_reserve_space run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK crash still not fixed/happens on the oldest tested release Reproducer flagged being flaky revisions tested: 2, total time: 1h1m44.440409465s (build: 37m6.972154591s, test: 23m43.811455983s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Merge tag 'block-6.4-2023-05-26' of git://git.kernel.dk/linux crash: WARNING in ext4_da_update_reserve_space EXT4-fs warning (device loop5): ext4_da_update_reserve_space:344: ext4_da_update_reserve_space: ino 18, used 1 with only 0 reserved data blocks ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6344 at fs/ext4/inode.c:345 ext4_da_update_reserve_space+0x314/0x590 fs/ext4/inode.c:341 Modules linked in: CPU: 0 PID: 6344 Comm: kworker/u4:8 Not tainted 6.4.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/16/2023 Workqueue: writeback wb_workfn (flush-7:5) RIP: 0010:ext4_da_update_reserve_space+0x314/0x590 fs/ext4/inode.c:345 Code: 00 4c 89 e7 48 c7 c6 b0 84 7e 8b ba 58 01 00 00 48 c7 c1 20 5f fc 89 49 c7 c0 b0 84 7e 8b 53 41 55 e8 20 a6 0c 00 48 83 c4 10 <0f> 0b 49 bc 00 00 00 00 00 fc ff df 43 0f b6 04 27 84 c0 0f 85 76 RSP: 0018:ffffc9000aafed08 EFLAGS: 00010282 RAX: 89f331253dbdc400 RBX: 0000000000000000 RCX: 89f331253dbdc400 RDX: 0000000000000001 RSI: ffffffff8a382a20 RDI: 0000000000000001 RBP: ffff888073d4e6f0 R08: dffffc0000000000 R09: fffff5200155fd35 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880173ae000 R13: 0000000000000001 R14: ffff88807bb0c000 R15: 1ffff1100e7a9d8b FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0fa707b178 CR3: 000000006b90b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_map_blocks+0x828/0x1810 fs/ext4/inode.c:644 mpage_map_one_extent fs/ext4/inode.c:2183 [inline] mpage_map_and_submit_extent fs/ext4/inode.c:2236 [inline] ext4_do_writepages+0x1654/0x3510 fs/ext4/inode.c:2703 ext4_writepages+0x1f1/0x390 fs/ext4/inode.c:2792 do_writepages+0x33b/0x5d0 mm/page-writeback.c:2551 __writeback_single_inode+0xf5/0x9f0 fs/fs-writeback.c:1603 writeback_sb_inodes+0x61b/0xea0 fs/fs-writeback.c:1894 wb_writeback+0x380/0x8f0 fs/fs-writeback.c:2068 wb_do_writeback fs/fs-writeback.c:2211 [inline] wb_workfn+0x3c7/0xde0 fs/fs-writeback.c:2251 process_one_work+0x797/0xe20 kernel/workqueue.c:2405 worker_thread+0x8c9/0xfd0 kernel/workqueue.c:2552 kthread+0x276/0x2f0 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308