Messages in this thread |  | | Date | Sat, 17 Dec 2022 22:01:34 -0800 | Subject | Re: [syzbot] [gfs2?] general protection fault in gfs2_evict_inode (2) | From | syzbot <> |
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syzbot has found a reproducer for the following issue on:
HEAD commit: a5541c0811a0 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=15551327880000 kernel config: https://syzkaller.appspot.com/x/.config?x=cbd4e584773e9397 dashboard link: https://syzkaller.appspot.com/bug?extid=8a5fc6416c175cecea34 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1718796f880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1735df8f880000
Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/4b7702208fb9/disk-a5541c08.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/9ec0153ec051/vmlinux-a5541c08.xz kernel image: https://storage.googleapis.com/syzbot-assets/6f8725ad290a/Image-a5541c08.gz.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/b4c763067524/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8a5fc6416c175cecea34@syzkaller.appspotmail.com
gfs2: fsid=syz:syz.0: error recovering journal 0: -5 Unable to handle kernel NULL pointer dereference at virtual address 000000000000008c Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=000000010dd7c000 [000000000000008c] pgd=080000010bf77003, p4d=080000010bf77003, pud=080000010a9f1003, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 3071 Comm: syz-executor179 Not tainted 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : evict_linked_inode fs/gfs2/super.c:1330 [inline] pc : gfs2_evict_inode+0x6f8/0x918 fs/gfs2/super.c:1385 lr : evict_linked_inode fs/gfs2/super.c:1328 [inline] lr : gfs2_evict_inode+0x6ec/0x918 fs/gfs2/super.c:1385 sp : ffff80000ff73830 x29: ffff80000ff738a0 x28: 0000000000000000 x27: 0000000000000000 x26: ffff0000cb74c728 x25: 0000000000008004 x24: ffff0000c9b25110 x23: ffff0000cb74c000 x22: ffff0000c9b24e70 x21: ffff0000cb74c000 x20: ffff0000ca579770 x19: ffff0000ca5792c0 x18: 00000000000000c0 x17: ffff80000dda8198 x16: ffff80000dbe6158 x15: ffff0000c407cec0 x14: 00000000000000b8 x13: 00000000ffffffff x12: ffff0000c407cec0 x11: ff80800009278314 x10: 0000000000000000 x9 : ffff800009278314 x8 : 0000000000000000 x7 : ffff80000862aa80 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000001 x1 : 0000000000000000 x0 : ffff0000cb74c000 Call trace: evict_linked_inode fs/gfs2/super.c:1330 [inline] gfs2_evict_inode+0x6f8/0x918 fs/gfs2/super.c:1385 evict+0xec/0x334 fs/inode.c:664 iput_final fs/inode.c:1747 [inline] iput+0x2c4/0x324 fs/inode.c:1773 gfs2_jindex_free+0x10c/0x16c fs/gfs2/super.c:75 init_journal+0x518/0xcbc fs/gfs2/ops_fstype.c:871 init_inodes+0x74/0x184 fs/gfs2/ops_fstype.c:889 gfs2_fill_super+0x630/0x874 fs/gfs2/ops_fstype.c:1247 get_tree_bdev+0x1e8/0x2a0 fs/super.c:1324 gfs2_get_tree+0x30/0xc0 fs/gfs2/ops_fstype.c:1330 vfs_get_tree+0x40/0x140 fs/super.c:1531 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040 path_mount+0x358/0x890 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 Code: 97ff3736 f94482e8 aa1703e0 2a1f03e1 (b9408d02) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97ff3736 bl 0xfffffffffffcdcd8 4: f94482e8 ldr x8, [x23, #2304] 8: aa1703e0 mov x0, x23 c: 2a1f03e1 mov w1, wzr * 10: b9408d02 ldr w2, [x8, #140] <-- trapping instruction
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