Hello, syzbot found the following issue on:
HEAD commit: df60eac9efe8 Merge tag 'for-linus-6.14-1' of https://githu.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10e14a38580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e56f16478dfabb4 dashboard link: https://syzkaller.appspot.com/bug?extid=b6b347b7a4ea1b2e29b6 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/c42a22eab378/disk-df60eac9.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e8d947efbb6a/vmlinux-df60eac9.xz kernel image: https://storage.googleapis.com/syzbot-assets/0225eaefda10/bzImage-df60eac9.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b6b347b7a4ea1b2e2...@syzkaller.appspotmail.com F2FS-fs (loop3): Stopped filesystem due to reason: 7 kworker/u8:7: attempt to access beyond end of device loop3: rw=1, sector=45096, nr_sectors = 8 limit=40427 BUG: unable to handle page fault for address: ffffed1604ea3dfa #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffee067 P4D 23ffee067 PUD 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 2977 Comm: kworker/u8:7 Not tainted 6.13.0-syzkaller-04541-gdf60eac9efe8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: writeback wb_workfn (flush-7:3) RIP: 0010:get_ckpt_valid_blocks fs/f2fs/segment.h:361 [inline] RIP: 0010:has_curseg_enough_space fs/f2fs/segment.h:570 [inline] RIP: 0010:__get_secs_required fs/f2fs/segment.h:620 [inline] RIP: 0010:has_not_enough_free_secs fs/f2fs/segment.h:633 [inline] RIP: 0010:has_enough_free_secs+0x575/0x1660 fs/f2fs/segment.h:649 Code: 3c 08 00 74 12 48 89 ef e8 88 30 0d fe 48 b9 00 00 00 00 00 fc ff df 4b 8d 1c 7f 48 c1 e3 04 48 03 5d 00 48 89 d8 48 c1 e8 03 <0f> b6 04 08 84 c0 0f 85 bc 02 00 00 44 0f b7 63 02 41 81 e4 ff 03 RSP: 0018:ffffc9000baa7268 EFLAGS: 00010a06 RAX: 1ffff11604ea3dfa RBX: ffff88b02751efd0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff888028c058e8 R08: ffffffff83f643f7 R09: 1ffff110037e6a00 R10: dffffc0000000000 R11: ffffed10037e6a01 R12: 1ffff110037e682e R13: ffff88801bf34170 R14: 0000000000000001 R15: 00000000ffffffff FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1604ea3dfa CR3: 0000000033f0a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> f2fs_is_checkpoint_ready fs/f2fs/segment.h:671 [inline] f2fs_write_inode+0x425/0x540 fs/f2fs/inode.c:791 write_inode fs/fs-writeback.c:1525 [inline] __writeback_single_inode+0x708/0x10d0 fs/fs-writeback.c:1745 writeback_sb_inodes+0x820/0x1360 fs/fs-writeback.c:1976 wb_writeback+0x413/0xb80 fs/fs-writeback.c:2156 wb_do_writeback fs/fs-writeback.c:2303 [inline] wb_workfn+0x410/0x1080 fs/fs-writeback.c:2343 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317 worker_thread+0x870/0xd30 kernel/workqueue.c:3398 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> Modules linked in: CR2: ffffed1604ea3dfa ---[ end trace 0000000000000000 ]--- RIP: 0010:get_ckpt_valid_blocks fs/f2fs/segment.h:361 [inline] RIP: 0010:has_curseg_enough_space fs/f2fs/segment.h:570 [inline] RIP: 0010:__get_secs_required fs/f2fs/segment.h:620 [inline] RIP: 0010:has_not_enough_free_secs fs/f2fs/segment.h:633 [inline] RIP: 0010:has_enough_free_secs+0x575/0x1660 fs/f2fs/segment.h:649 Code: 3c 08 00 74 12 48 89 ef e8 88 30 0d fe 48 b9 00 00 00 00 00 fc ff df 4b 8d 1c 7f 48 c1 e3 04 48 03 5d 00 48 89 d8 48 c1 e8 03 <0f> b6 04 08 84 c0 0f 85 bc 02 00 00 44 0f b7 63 02 41 81 e4 ff 03 RSP: 0018:ffffc9000baa7268 EFLAGS: 00010a06 RAX: 1ffff11604ea3dfa RBX: ffff88b02751efd0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff888028c058e8 R08: ffffffff83f643f7 R09: 1ffff110037e6a00 R10: dffffc0000000000 R11: ffffed10037e6a01 R12: 1ffff110037e682e R13: ffff88801bf34170 R14: 0000000000000001 R15: 00000000ffffffff FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1604ea3dfa CR3: 0000000033f0a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 3c 08 cmp $0x8,%al 2: 00 74 12 48 add %dh,0x48(%rdx,%rdx,1) 6: 89 ef mov %ebp,%edi 8: e8 88 30 0d fe call 0xfe0d3095 d: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 14: fc ff df 17: 4b 8d 1c 7f lea (%r15,%r15,2),%rbx 1b: 48 c1 e3 04 shl $0x4,%rbx 1f: 48 03 5d 00 add 0x0(%rbp),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 bc 02 00 00 jne 0x2f2 36: 44 0f b7 63 02 movzwl 0x2(%rbx),%r12d 3b: 41 rex.B 3c: 81 .byte 0x81 3d: e4 ff in $0xff,%al 3f: 03 .byte 0x3 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkal...@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
