On Sat, Nov 1, 2025 at 1:26 PM syzbot <[email protected]> wrote: > > syzbot has found a reproducer for the following issue on: > > HEAD commit: 98bd8b16ae57 Add linux-next specific files for 20251031 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=163b2bcd980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=63d09725c93bcc1c > dashboard link: https://syzkaller.appspot.com/bug?extid=3686758660f980b402dc > compiler: Debian clang version 20.1.8 > (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=176fc342580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10403f34580000 > > Downloadable assets: > disk image: > https://storage.googleapis.com/syzbot-assets/975261746f29/disk-98bd8b16.raw.xz > vmlinux: > https://storage.googleapis.com/syzbot-assets/ad565c6cf272/vmlinux-98bd8b16.xz > kernel image: > https://storage.googleapis.com/syzbot-assets/1816a55a8d5f/bzImage-98bd8b16.xz > mounted in repro: > https://storage.googleapis.com/syzbot-assets/d6d9eee31fdb/mount_0.gz > fsck result: failed (log: > https://syzkaller.appspot.com/x/fsck.log?x=17803f34580000) > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: [email protected] > > vms_complete_munmap_vmas+0x206/0x8a0 mm/vma.c:1279 > do_vmi_align_munmap+0x364/0x440 mm/vma.c:1538 > do_vmi_munmap+0x253/0x2e0 mm/vma.c:1586 > __vm_munmap+0x207/0x380 mm/vma.c:3196 > __do_sys_munmap mm/mmap.c:1077 [inline] > __se_sys_munmap mm/mmap.c:1074 [inline] > __x64_sys_munmap+0x60/0x70 mm/mmap.c:1074 > do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] > do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > ------------[ cut here ]------------ > kernel BUG at mm/filemap.c:1530!
I think this is the same bug that was fixed by [1]. [1] https://lore.kernel.org/linux-fsdevel/[email protected]/ > Oops: invalid opcode: 0000 [#1] SMP KASAN PTI > CPU: 1 UID: 0 PID: 5989 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 10/02/2025 > RIP: 0010:folio_end_read+0x1e9/0x230 mm/filemap.c:1530 > Code: 79 c7 ff 48 89 df 48 c7 c6 20 6d 74 8b e8 9f df 2e ff 90 0f 0b e8 d7 79 > c7 ff 48 89 df 48 c7 c6 40 63 74 8b e8 88 df 2e ff 90 <0f> 0b e8 c0 79 c7 ff > 48 89 df 48 c7 c6 20 6d 74 8b e8 71 df 2e ff > RSP: 0018:ffffc90003f8e268 EFLAGS: 00010246 > RAX: c6904ff3387db700 RBX: ffffea0001b5ef00 RCX: 0000000000000000 > RDX: 0000000000000007 RSI: ffffffff8d780a1b RDI: 00000000ffffffff > RBP: 0000000000000000 R08: ffffffff8f7d7477 R09: 1ffffffff1efae8e > R10: dffffc0000000000 R11: fffffbfff1efae8f R12: 1ffffd400036bde1 > R13: 1ffffd400036bde0 R14: ffffea0001b5ef08 R15: 00fff20000004060 > FS: 0000555572333500(0000) GS:ffff888125fe2000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f57d6844000 CR3: 0000000075586000 CR4: 00000000003526f0 > Call Trace: > <TASK> > iomap_readahead+0x96a/0xbc0 fs/iomap/buffered-io.c:547 > iomap_bio_readahead include/linux/iomap.h:608 [inline] > erofs_readahead+0x1c3/0x3c0 fs/erofs/data.c:383 > read_pages+0x17a/0x580 mm/readahead.c:163 > page_cache_ra_order+0x924/0xe70 mm/readahead.c:518 > filemap_readahead mm/filemap.c:2658 [inline] > filemap_get_pages+0x7ff/0x1df0 mm/filemap.c:2704 > filemap_read+0x3f6/0x11a0 mm/filemap.c:2800 > __kernel_read+0x4cf/0x960 fs/read_write.c:530 > integrity_kernel_read+0x89/0xd0 security/integrity/iint.c:28 > ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:480 [inline] > ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] > ima_calc_file_hash+0x85e/0x16f0 security/integrity/ima/ima_crypto.c:568 > ima_collect_measurement+0x428/0x8f0 security/integrity/ima/ima_api.c:293 > process_measurement+0x1121/0x1a40 security/integrity/ima/ima_main.c:405 > ima_file_check+0xd7/0x120 security/integrity/ima/ima_main.c:656 > security_file_post_open+0xbb/0x290 security/security.c:2652 > do_open fs/namei.c:3977 [inline] > path_openat+0x2f26/0x3830 fs/namei.c:4134 > do_filp_open+0x1fa/0x410 fs/namei.c:4161 > do_sys_openat2+0x121/0x1c0 fs/open.c:1437 > do_sys_open fs/open.c:1452 [inline] > __do_sys_openat fs/open.c:1468 [inline] > __se_sys_openat fs/open.c:1463 [inline] > __x64_sys_openat+0x138/0x170 fs/open.c:1463 > do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] > do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7f0b08d8efc9 > Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007ffec6a5d268 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 > RAX: ffffffffffffffda RBX: 00007f0b08fe5fa0 RCX: 00007f0b08d8efc9 > RDX: 0000000000121140 RSI: 0000200000000000 RDI: ffffffffffffff9c > RBP: 00007f0b08e11f91 R08: 0000000000000000 R09: 0000000000000000 > R10: 000000000000013d R11: 0000000000000246 R12: 0000000000000000 > R13: 00007f0b08fe5fa0 R14: 00007f0b08fe5fa0 R15: 0000000000000004 > </TASK> > Modules linked in: > ---[ end trace 0000000000000000 ]--- > RIP: 0010:folio_end_read+0x1e9/0x230 mm/filemap.c:1530 > Code: 79 c7 ff 48 89 df 48 c7 c6 20 6d 74 8b e8 9f df 2e ff 90 0f 0b e8 d7 79 > c7 ff 48 89 df 48 c7 c6 40 63 74 8b e8 88 df 2e ff 90 <0f> 0b e8 c0 79 c7 ff > 48 89 df 48 c7 c6 20 6d 74 8b e8 71 df 2e ff > RSP: 0018:ffffc90003f8e268 EFLAGS: 00010246 > RAX: c6904ff3387db700 RBX: ffffea0001b5ef00 RCX: 0000000000000000 > RDX: 0000000000000007 RSI: ffffffff8d780a1b RDI: 00000000ffffffff > RBP: 0000000000000000 R08: ffffffff8f7d7477 R09: 1ffffffff1efae8e > R10: dffffc0000000000 R11: fffffbfff1efae8f R12: 1ffffd400036bde1 > R13: 1ffffd400036bde0 R14: ffffea0001b5ef08 R15: 00fff20000004060 > FS: 0000555572333500(0000) GS:ffff888125ee2000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000001b30063fff CR3: 0000000075586000 CR4: 00000000003526f0 > > > --- > 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. > #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
