bisecting fixing commit since 34816d20f173a90389c8a7e641166d8ea9dce70a
building syzkaller on e6b0d3140b98e8456fbd089d584e932e19257d94
testing commit 34816d20f173a90389c8a7e641166d8ea9dce70a with gcc (GCC) 10.2.1 20210217
kernel signature: 509e65a0c333249946868fd4ce178dc7785d6be7afc8f228dc7f56a33427edc5
all runs: crashed: BUG: unable to handle kernel paging request in diFree
testing current HEAD 7426cedc7dad67bf3c71ea6cc29ab7822e1a453f
testing commit 7426cedc7dad67bf3c71ea6cc29ab7822e1a453f with gcc (GCC) 10.2.1 20210217
kernel signature: 0440f706e147dc22e2c7302705c43e69e71b56b17f643a0474c574eb83c2c719
all runs: crashed: BUG: unable to handle kernel paging request in diFree
revisions tested: 2, total time: 19m18.725354504s (build: 12m5.770773839s, test: 6m29.420050624s)
the crash still happens on HEAD
commit msg: Merge tag 'spi-fix-v5.13-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
crash: BUG: unable to handle kernel paging request in diFree
loop0: detected capacity change from 0 to 180
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 a88f067 P4D a88f067 PUD a891067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 10161 Comm: syz-executor.0 Not tainted 5.13.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:diFree+0x156/0x3370 fs/jfs/jfs_imap.c:853
Code: 28 48 8d 78 80 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 75 20 00 00 48 8b 44 24 08 <4c> 8b 60 80 4c 89 e8 48 c1 e8 0c 48 89 04 24 48 b8 00 00 00 00 00
RSP: 0018:ffffc9000a7ef950 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888017dc3200 RCX: ffffffff8284dc6e
RDX: 1ffffffffffffff0 RSI: 0000000000000008 RDI: ffffffffffffff80
RBP: ffff8880372e0900 R08: 0000000000000000 R09: ffff8880372e0907
R10: ffffed1006e5c120 R11: 0000000000000000 R12: ffff8880372e0db0
R13: 0000000000000001 R14: ffffffff89024aa0 R15: ffff8880372e0cd8
FS:  00007fee6e3ba700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff80 CR3: 000000001b0c6000 CR4: 0000000000350ee0
Call Trace:
 jfs_evict_inode+0x25c/0x310 fs/jfs/inode.c:154
 evict+0x296/0x5d0 fs/inode.c:584
 jfs_mount+0x1ce/0x320 fs/jfs/jfs_mount.c:211
 jfs_fill_super+0x555/0xb10 fs/jfs/super.c:561
 mount_bdev+0x2cb/0x3b0 fs/super.c:1368
 legacy_get_tree+0xfa/0x1f0 fs/fs_context.c:592
 vfs_get_tree+0x7f/0x2c0 fs/super.c:1498
 do_new_mount fs/namespace.c:2905 [inline]
 path_mount+0x7f3/0x1a40 fs/namespace.c:3235
 do_mount fs/namespace.c:3248 [inline]
 __do_sys_mount fs/namespace.c:3456 [inline]
 __se_sys_mount fs/namespace.c:3433 [inline]
 __x64_sys_mount+0x1f5/0x260 fs/namespace.c:3433
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x466daa
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:00007fee6e3b9fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000466daa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fee6e3ba000
RBP: 00007fee6e3ba040 R08: 00007fee6e3ba040 R09: 0000000020000000
R10: 0000000000008001 R11: 0000000000000246 R12: 0000000020000000
R13: 0000000020000100 R14: 00007fee6e3ba000 R15: 0000000020064f00
Modules linked in:
CR2: ffffffffffffff80
---[ end trace 095fa2f5e4edfac9 ]---
RIP: 0010:diFree+0x156/0x3370 fs/jfs/jfs_imap.c:853
Code: 28 48 8d 78 80 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 75 20 00 00 48 8b 44 24 08 <4c> 8b 60 80 4c 89 e8 48 c1 e8 0c 48 89 04 24 48 b8 00 00 00 00 00
RSP: 0018:ffffc9000a7ef950 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888017dc3200 RCX: ffffffff8284dc6e
RDX: 1ffffffffffffff0 RSI: 0000000000000008 RDI: ffffffffffffff80
RBP: ffff8880372e0900 R08: 0000000000000000 R09: ffff8880372e0907
R10: ffffed1006e5c120 R11: 0000000000000000 R12: ffff8880372e0db0
R13: 0000000000000001 R14: ffffffff89024aa0 R15: ffff8880372e0cd8
FS:  00007fee6e3ba700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff80 CR3: 000000001b0c6000 CR4: 0000000000350ee0