BUG: unable to handle kernel paging request in diFree

BUG: unable to handle kernel paging request in diFree
Status: upstream: reported C repro on 2020/09/28 07:48
Reported-by: syzbot+0a89a7b56db04c21a656@syzkaller.appspotmail.com
First crash: 32d, last: 18d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	BUG: unable to handle kernel paging request in diFree	C			4	13h12m	27d	0/1	upstream: reported C repro on 2020/09/29 04:03
linux-4.14	BUG: unable to handle kernel paging request in diFree	C			4	23d	32d	0/1	upstream: reported C repro on 2020/09/23 16:53

Sample crash report:

ERROR: (device loop0): xtSearch: XT_GETPAGE: xtree page corrupt
BUG: unable to handle page fault for address: ffffffffffffff80
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 9e90067 P4D 9e90067 PUD 9e92067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 6873 Comm: syz-executor237 Not tainted 5.9.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:diFree+0x13d/0x2dc0 fs/jfs/jfs_imap.c:853
Code: 28 48 8d 78 80 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ef 23 00 00 48 8b 44 24 18 <4c> 8b 60 80 48 8b 44 24 20 49 8d 6c 24 04 48 c1 e8 0c 48 89 ea 48
RSP: 0018:ffffc90005187958 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880a670ae00 RCX: ffffffff82a8dd47
RDX: 1ffffffffffffff0 RSI: ffffffff82ab0e22 RDI: ffffffffffffff80
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff88808404c0df
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808404c588
R13: ffff88808404c4d8 R14: ffffffff88bf1440 R15: ffff88808404c4b0
FS:  000000000153f880(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff80 CR3: 000000008e9f9000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 jfs_evict_inode+0x2c9/0x370 fs/jfs/inode.c:154
 evict+0x2ed/0x750 fs/inode.c:576
 iput_final fs/inode.c:1652 [inline]
 iput.part.0+0x424/0x850 fs/inode.c:1678
 iput+0x58/0x70 fs/inode.c:1668
 diFreeSpecial fs/jfs/jfs_imap.c:550 [inline]
 diFreeSpecial+0x6f/0x90 fs/jfs/jfs_imap.c:542
 jfs_mount+0x23f/0x3d0 fs/jfs/jfs_mount.c:210
 jfs_fill_super+0x5b1/0xbc0 fs/jfs/super.c:562
 mount_bdev+0x32e/0x3f0 fs/super.c:1417
 legacy_get_tree+0x105/0x220 fs/fs_context.c:592
 vfs_get_tree+0x89/0x2f0 fs/super.c:1547
 do_new_mount fs/namespace.c:2875 [inline]
 path_mount+0x1387/0x20a0 fs/namespace.c:3192
 do_mount fs/namespace.c:3205 [inline]
 __do_sys_mount fs/namespace.c:3413 [inline]
 __se_sys_mount fs/namespace.c:3390 [inline]
 __x64_sys_mount+0x27f/0x300 fs/namespace.c:3390
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x446e0a
Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd ad fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 da ad fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007ffe08313608 EFLAGS: 00000283 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe08313660 RCX: 0000000000446e0a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe08313620
RBP: 00007ffe08313620 R08: 00007ffe08313660 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000283 R12: 0000000000000002
R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003
Modules linked in:
CR2: ffffffffffffff80
---[ end trace a23fb3f1103b0304 ]---
RIP: 0010:diFree+0x13d/0x2dc0 fs/jfs/jfs_imap.c:853
Code: 28 48 8d 78 80 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ef 23 00 00 48 8b 44 24 18 <4c> 8b 60 80 48 8b 44 24 20 49 8d 6c 24 04 48 c1 e8 0c 48 89 ea 48
RSP: 0018:ffffc90005187958 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880a670ae00 RCX: ffffffff82a8dd47
RDX: 1ffffffffffffff0 RSI: ffffffff82ab0e22 RDI: ffffffffffffff80
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff88808404c0df
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808404c588
R13: ffff88808404c4d8 R14: ffffffff88bf1440 R15: ffff88808404c4b0
FS:  000000000153f880(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff80 CR3: 000000008e9f9000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (4):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Maintainers
ci-upstream-kasan-gce-selinux-root	2020/10/08 12:39	upstream	c85fb28b	1880b4a9	.config	log	report	syz	C		jfs-discussion@lists.sourceforge.net, linux-kernel@vger.kernel.org, shaggy@kernel.org
ci-upstream-kasan-gce-smack-root	2020/09/27 12:59	upstream	eeddbe68	5dd8aee8	.config	log	report	syz	C		jfs-discussion@lists.sourceforge.net, linux-kernel@vger.kernel.org, shaggy@kernel.org
ci-upstream-kasan-gce-smack-root	2020/09/24 02:11	upstream	805c6d3c	287cd75a	.config	log	report	syz	C		jfs-discussion@lists.sourceforge.net, linux-kernel@vger.kernel.org, shaggy@kernel.org
ci-upstream-kasan-gce-smack-root	2020/09/24 01:56	upstream	805c6d3c	287cd75a	.config	log	report			info	jfs-discussion@lists.sourceforge.net, linux-kernel@vger.kernel.org, shaggy@kernel.org