#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git bugfix/syzbot
On 2/11/25 05:42, syzbot wrote: > syzbot has found a reproducer for the following issue on: > > HEAD commit: a64dcfb451e2 Linux 6.14-rc2 > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=17297b18580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=7f246b548ed0635a > dashboard link: https://syzkaller.appspot.com/bug?extid=15669ec8c35ddf6c3d43 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) > 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=103943f8580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12da1bdf980000 > > Downloadable assets: > disk image (non-bootable): > https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-a64dcfb4.raw.xz > vmlinux: > https://storage.googleapis.com/syzbot-assets/6a816640d31b/vmlinux-a64dcfb4.xz > kernel image: > https://storage.googleapis.com/syzbot-assets/b5cb42ffa4f6/bzImage-a64dcfb4.xz > mounted in repro #1: > https://storage.googleapis.com/syzbot-assets/caba9b9b8f24/mount_0.gz > fsck result: failed (log: > https://syzkaller.appspot.com/x/fsck.log?x=14da1bdf980000) > mounted in repro #2: > https://storage.googleapis.com/syzbot-assets/270c3c4c1558/mount_6.gz > fsck result: failed (log: > https://syzkaller.appspot.com/x/fsck.log?x=121672a4580000) > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+15669ec8c35ddf6c3...@syzkaller.appspotmail.com > > F2FS-fs (loop0): Found nat_bits in checkpoint > F2FS-fs (loop0): Start checkpoint disabled! > F2FS-fs (loop0): Mounted with checkpoint version = 48b305e6 > ------------[ cut here ]------------ > kernel BUG at fs/f2fs/segment.c:2809! > Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI > CPU: 0 UID: 0 PID: 5304 Comm: syz-executor274 Not tainted > 6.14.0-rc2-syzkaller #0 > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS > 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 > RIP: 0010:get_new_segment fs/f2fs/segment.c:2809 [inline] > RIP: 0010:new_curseg+0x1f52/0x1f70 fs/f2fs/segment.c:2939 > Code: fb fd e9 1a fa ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 4c fa ff ff 48 > 89 df e8 59 4e fb fd e9 3f fa ff ff e8 5f b5 94 fd 90 <0f> 0b e8 57 b5 94 fd > 90 0f 0b e8 4f b5 94 fd 90 0f 0b e8 47 b5 94 > RSP: 0018:ffffc9000d0af4a8 EFLAGS: 00010293 > RAX: ffffffff842a9a41 RBX: 0000000000000018 RCX: ffff88801ede4880 > RDX: 0000000000000000 RSI: 0000000000000018 RDI: 0000000000000018 > RBP: dffffc0000000000 R08: ffffffff842a8875 R09: fffff52001a15e84 > R10: dffffc0000000000 R11: fffff52001a15e84 R12: 0000000000000018 > R13: ffff888043de5101 R14: 0000000000000018 R15: ffff888038298f58 > FS: 000055556f014380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000000 CR3: 0000000042a82000 CR4: 0000000000352ef0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > <TASK> > __allocate_new_segment+0x1ce/0x940 fs/f2fs/segment.c:3273 > f2fs_allocate_new_section fs/f2fs/segment.c:3287 [inline] > f2fs_allocate_pinning_section+0xfa/0x4e0 fs/f2fs/segment.c:3301 > f2fs_expand_inode_data+0x696/0xca0 fs/f2fs/file.c:1849 > f2fs_fallocate+0x537/0xa10 fs/f2fs/file.c:1959 > vfs_fallocate+0x623/0x7a0 fs/open.c:338 > do_vfs_ioctl+0x258c/0x2e40 fs/ioctl.c:885 > __do_sys_ioctl fs/ioctl.c:904 [inline] > __se_sys_ioctl+0x80/0x170 fs/ioctl.c:892 > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7ffbafdefd99 > Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007ffecbc98b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 > RAX: ffffffffffffffda RBX: 0000400000000080 RCX: 00007ffbafdefd99 > RDX: 00004000000000c0 RSI: 0000000040305828 RDI: 0000000000000005 > RBP: 0030656c69662f2e R08: 000055556f0154c0 R09: 000055556f0154c0 > R10: 0000000000000000 R11: 0000000000000246 R12: 00004000000000c0 > R13: 00004000000000e0 R14: 00004000000000c2 R15: 00007ffbafe3903b > </TASK> > Modules linked in: > ---[ end trace 0000000000000000 ]--- > RIP: 0010:get_new_segment fs/f2fs/segment.c:2809 [inline] > RIP: 0010:new_curseg+0x1f52/0x1f70 fs/f2fs/segment.c:2939 > Code: fb fd e9 1a fa ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 4c fa ff ff 48 > 89 df e8 59 4e fb fd e9 3f fa ff ff e8 5f b5 94 fd 90 <0f> 0b e8 57 b5 94 fd > 90 0f 0b e8 4f b5 94 fd 90 0f 0b e8 47 b5 94 > RSP: 0018:ffffc9000d0af4a8 EFLAGS: 00010293 > RAX: ffffffff842a9a41 RBX: 0000000000000018 RCX: ffff88801ede4880 > RDX: 0000000000000000 RSI: 0000000000000018 RDI: 0000000000000018 > RBP: dffffc0000000000 R08: ffffffff842a8875 R09: fffff52001a15e84 > R10: dffffc0000000000 R11: fffff52001a15e84 R12: 0000000000000018 > R13: ffff888043de5101 R14: 0000000000000018 R15: ffff888038298f58 > FS: 000055556f014380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000000 CR3: 0000000042a82000 CR4: 0000000000352ef0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > > --- > If you want syzbot to run the reproducer, reply with: > #syz test: git://repo/address.git branch-or-commit-hash > If you attach or paste a git patch, syzbot will apply it before testing. _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
