ci2 starts bisection 2023-05-02 04:09:51.886714517 +0000 UTC m=+304045.907085731 bisecting fixing commit since 3b29299e5f604550faf3eff811d6cd60b4c6cae6 building syzkaller on f325deb023e4e2fb9197004be1b3da738680429c ensuring issue is reproducible on original commit 3b29299e5f604550faf3eff811d6cd60b4c6cae6 testing commit 3b29299e5f604550faf3eff811d6cd60b4c6cae6 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: fca3a913d2ef4928d663bd96621137bb42c9850178d1e4aeb1ca6ad74e21cc92 run #0: crashed: WARNING in mark_buffer_dirty run #1: crashed: general protection fault in bfs_get_block run #2: crashed: general protection fault in bfs_get_block run #3: crashed: general protection fault in bfs_get_block run #4: crashed: WARNING in mark_buffer_dirty run #5: crashed: general protection fault in bfs_get_block run #6: crashed: general protection fault in bfs_get_block run #7: crashed: WARNING in mark_buffer_dirty run #8: crashed: WARNING in mark_buffer_dirty run #9: crashed: WARNING in mark_buffer_dirty run #10: crashed: WARNING in mark_buffer_dirty run #11: crashed: WARNING in mark_buffer_dirty run #12: crashed: WARNING in mark_buffer_dirty run #13: crashed: WARNING in mark_buffer_dirty run #14: crashed: WARNING in mark_buffer_dirty run #15: crashed: WARNING in mark_buffer_dirty run #16: crashed: general protection fault in bfs_get_block run #17: crashed: general protection fault in bfs_get_block run #18: crashed: WARNING in mark_buffer_dirty run #19: crashed: WARNING in mark_buffer_dirty testing current HEAD ca48fc16c49388400eddd6c6614593ebf7c7726a testing commit ca48fc16c49388400eddd6c6614593ebf7c7726a gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 3a2b74c179043314240442add0dae2367b0cf39d47be4e570fe81afe56713b7d all runs: crashed: WARNING in mark_buffer_dirty revisions tested: 2, total time: 37m12.600121644s (build: 29m44.137135193s, test: 6m58.362699277s) the crash still happens on HEAD commit msg: Linux 6.1.27 crash: WARNING in mark_buffer_dirty ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3981 at fs/buffer.c:1081 mark_buffer_dirty+0x23d/0x4c0 fs/buffer.c:1109 Modules linked in: CPU: 1 PID: 3981 Comm: syz-executor.0 Not tainted 6.1.27-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:mark_buffer_dirty+0x23d/0x4c0 fs/buffer.c:1081 Code: 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 aa 98 e6 ff 49 8b 3f be 04 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 13 04 fd ff <0f> 0b e9 dd fd ff ff 0f 0b e9 10 fe ff ff 0f 0b e9 3b fe ff ff 48 RSP: 0018:ffffc90004686be0 EFLAGS: 00010246 RAX: ffff88806f076c01 RBX: ffff8880166de018 RCX: ffffffff81db2ce7 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88801780d570 RBP: ffff888079042400 R08: dffffc0000000000 R09: ffffed1002f01aaf R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880706314b8 R13: ffff88801780d570 R14: ffff88806f076c00 R15: ffff88801780d570 FS: 00007f6efab95700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa4125595a0 CR3: 000000007a28d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bfs_move_block fs/bfs/file.c:43 [inline] bfs_move_blocks fs/bfs/file.c:56 [inline] bfs_get_block+0x944/0x970 fs/bfs/file.c:125 __block_write_begin_int+0x380/0x11b0 fs/buffer.c:1991 __block_write_begin fs/buffer.c:2041 [inline] block_write_begin+0x6e/0x140 fs/buffer.c:2102 bfs_write_begin+0x29/0xa0 fs/bfs/file.c:177 generic_perform_write+0x2f1/0x540 mm/filemap.c:3754 __generic_file_write_iter+0x13f/0x340 mm/filemap.c:3882 generic_file_write_iter+0x99/0x230 mm/filemap.c:3914 __kernel_write_iter+0x2c7/0x630 fs/read_write.c:517 __kernel_write+0x11b/0x170 fs/read_write.c:537 __dump_emit+0x1f0/0x300 fs/coredump.c:804 elf_core_dump+0x2ab9/0x39c0 fs/binfmt_elf.c:2291 do_coredump+0x1b1b/0x23a0 fs/coredump.c:755 get_signal+0xf82/0x12c0 kernel/signal.c:2844 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:310 exc_page_fault+0x4e0/0x790 arch/x86/mm/fault.c:1578 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 002b:0000000020000008 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007f6ef9fabf80 RCX: 00007f6ef9e8c0f9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 00007f6ef9ee7b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcd692e2df R14: 00007f6efab95300 R15: 0000000000022000