Hello, syzbot found the following issue on:
HEAD commit: 82af5ea7c611 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=12b2c1a2580000 kernel config: https://syzkaller.appspot.com/x/.config?x=71154cdde49ea192 dashboard link: https://syzkaller.appspot.com/bug?extid=8397085af632792ccc3a compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16f6d5bc580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14c19434580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/dd1816edf6fa/disk-82af5ea7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/961cb9724207/vmlinux-82af5ea7.xz kernel image: https://storage.googleapis.com/syzbot-assets/b93e015179fb/Image-82af5ea7.gz.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/622cc58dab82/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8397085af632792cc...@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at fs/bcachefs/fs-io-pagecache.c:219! Internal error: Oops - BUG: 00000000f2000800 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 6736 Comm: syz.0.17 Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : bch2_folio_set+0x940/0x964 fs/bcachefs/fs-io-pagecache.c:201 lr : bch2_folio_set+0x940/0x964 fs/bcachefs/fs-io-pagecache.c:201 sp : ffff8000a0767660 x29: ffff8000a0767800 x28: 0040000000000040 x27: 0040000000000040 x26: ffc0000000000038 x25: ffff8000a0767790 x24: dfff800000000000 x23: ffc0000100000037 x22: fffffdffc39e5208 x21: fffffdffc39e5200 x20: ffc0000000000038 x19: ffc0000000000038 x18: 00000000ffffffff x17: ffff800080d32178 x16: ffff80008ae69508 x15: 0000000000000003 x14: 0000000000000000 x13: 0000000000000013 x12: 0000000000ff0100 x11: ffff0000da3c5b80 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000da3c5b80 x7 : 20000000ffc00000 x6 : 00000038ffffffff x5 : ffff8000a07677a0 x4 : ffff8000a0767774 x3 : 0000000000000000 x2 : ffff8000a0767778 x1 : 0040000000000040 x0 : ffc0000000000038 Call trace: bch2_folio_set+0x940/0x964 fs/bcachefs/fs-io-pagecache.c:201 (P) __bch2_buffered_write fs/bcachefs/fs-io-buffered.c:864 [inline] bch2_buffered_write fs/bcachefs/fs-io-buffered.c:1026 [inline] bch2_write_iter+0xa14/0x2300 fs/bcachefs/fs-io-buffered.c:1082 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x62c/0x97c fs/read_write.c:686 ksys_write+0x120/0x210 fs/read_write.c:738 __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:746 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Code: d4210000 9776de90 d4210000 9776de8e (d4210000) ---[ end trace 0000000000000000 ]--- --- 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 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. 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
