Hello, syzbot found the following issue on:
HEAD commit: d4439a1189f9 Merge tag 'hsi-for-5.16' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13fae7cab00000 kernel config: https://syzkaller.appspot.com/x/.config?x=7f2760850058fbfb dashboard link: https://syzkaller.appspot.com/bug?extid=f77e2d1dc867b6accaf9 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f77e2d1dc867b6acc...@syzkaller.appspotmail.com R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f4836721000 R15: 0000000020047a20 </TASK> gfs2: fsid=syz:syz.0: can't read journal index: -5 general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f] CPU: 1 PID: 25372 Comm: syz-executor.3 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:evict_linked_inode fs/gfs2/super.c:1331 [inline] RIP: 0010:gfs2_evict_inode+0xbe2/0x2070 fs/gfs2/super.c:1386 Code: 03 80 3c 02 00 0f 85 d0 13 00 00 48 8b 9d 00 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 8c 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 RSP: 0018:ffffc90009bb77c8 EFLAGS: 00010217 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000b53c000 RDX: 0000000000000011 RSI: ffffffff836c5f71 RDI: 000000000000008c RBP: ffff88803ae28000 R08: 0000000000000000 R09: ffff88807115fb43 R10: ffffffff83666100 R11: 0000000000000000 R12: 0000000000000001 R13: ffff88807115fcb8 R14: ffff8880959e5cd8 R15: ffff8880959e5828 FS: 00007f4836721700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2fb011f000 CR3: 0000000022ee7000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: <TASK> evict+0x2ed/0x6b0 fs/inode.c:588 iput_final fs/inode.c:1664 [inline] iput.part.0+0x539/0x850 fs/inode.c:1690 iput+0x58/0x70 fs/inode.c:1680 dentry_unlink_inode+0x2b1/0x460 fs/dcache.c:376 __dentry_kill+0x3c0/0x640 fs/dcache.c:582 dentry_kill fs/dcache.c:708 [inline] dput+0x738/0xbc0 fs/dcache.c:888 gfs2_fill_super+0x2048/0x28a0 fs/gfs2/ops_fstype.c:1296 get_tree_bdev+0x440/0x760 fs/super.c:1293 gfs2_get_tree+0x4a/0x270 fs/gfs2/ops_fstype.c:1327 vfs_get_tree+0x89/0x2f0 fs/super.c:1498 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f48391ad01a Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4836720fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f48391ad01a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f4836721000 RBP: 00007f4836721040 R08: 00007f4836721040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f4836721000 R15: 0000000020047a20 </TASK> Modules linked in: ---[ end trace 68c9d12f167f0520 ]--- RIP: 0010:evict_linked_inode fs/gfs2/super.c:1331 [inline] RIP: 0010:gfs2_evict_inode+0xbe2/0x2070 fs/gfs2/super.c:1386 Code: 03 80 3c 02 00 0f 85 d0 13 00 00 48 8b 9d 00 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 8c 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 RSP: 0018:ffffc90009bb77c8 EFLAGS: 00010217 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000b53c000 RDX: 0000000000000011 RSI: ffffffff836c5f71 RDI: 000000000000008c RBP: ffff88803ae28000 R08: 0000000000000000 R09: ffff88807115fb43 R10: ffffffff83666100 R11: 0000000000000000 R12: 0000000000000001 R13: ffff88807115fcb8 R14: ffff8880959e5cd8 R15: ffff8880959e5828 FS: 00007f4836721700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2fb011f000 CR3: 0000000022ee7000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 03 80 3c 02 00 0f add 0xf00023c(%rax),%eax 6: 85 d0 test %edx,%eax 8: 13 00 adc (%rax),%eax a: 00 48 8b add %cl,-0x75(%rax) d: 9d popfq e: 00 09 add %cl,(%rcx) 10: 00 00 add %al,(%rax) 12: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 19: fc ff df 1c: 48 8d bb 8c 00 00 00 lea 0x8c(%rbx),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx <-- trapping instruction 2e: 48 89 f8 mov %rdi,%rax 31: 83 e0 07 and $0x7,%eax 34: 83 c0 03 add $0x3,%eax 37: 38 d0 cmp %dl,%al 39: 7c 09 jl 0x44 3b: 84 d2 test %dl,%dl 3d: 74 05 je 0x44 3f: e8 .byte 0xe8 --- This report is generated by a bot. 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