bisecting fixing commit since 6b7b0056defc6eb5c87bbe4690ccda547b2891aa
building syzkaller on 858ea628800647d5e5b68b11441e42b8ef5652c1
testing commit 6b7b0056defc6eb5c87bbe4690ccda547b2891aa
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a49990e97a593b1c0d16cda6b2eb3f8f321e5505a9bc2c1f706e74330c2625fa
run #0: crashed: kernel BUG in inline_xattr_iter_begin
run #1: crashed: kernel BUG in inline_xattr_iter_begin
run #2: crashed: kernel BUG in inline_xattr_iter_begin
run #3: crashed: kernel BUG in inline_xattr_iter_begin
run #4: crashed: kernel BUG in inline_xattr_iter_begin
run #5: crashed: kernel BUG in inline_xattr_iter_begin
run #6: crashed: kernel BUG in inline_xattr_iter_begin
run #7: crashed: kernel BUG in inline_xattr_iter_begin
run #8: crashed: kernel BUG in inline_xattr_iter_begin
run #9: crashed: kernel BUG in inline_xattr_iter_begin
run #10: crashed: kernel BUG in inline_xattr_iter_begin
run #11: crashed: kernel BUG in inline_xattr_iter_begin
run #12: crashed: kernel BUG in inline_xattr_iter_begin
run #13: crashed: kernel BUG in inline_xattr_iter_begin
run #14: crashed: kernel BUG in corrupted
run #15: crashed: kernel BUG in inline_xattr_iter_begin
run #16: crashed: kernel BUG in inline_xattr_iter_begin
run #17: crashed: kernel BUG in inline_xattr_iter_begin
run #18: crashed: kernel BUG in inline_xattr_iter_begin
run #19: crashed: kernel BUG in inline_xattr_iter_begin
testing current HEAD 2950c9c5e0df6bd34af45a5168bbee345e95eae2
testing commit 2950c9c5e0df6bd34af45a5168bbee345e95eae2
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 92629da104fe86f9720ff2266d1bb56bacd5da91c7cdf50d6469752c485866b8
all runs: crashed: kernel BUG in inline_xattr_iter_begin
revisions tested: 2, total time: 24m22.613676286s (build: 17m0.01511207s, test: 6m51.865163579s)
the crash still happens on HEAD
commit msg: Linux 4.19.207
crash: kernel BUG in inline_xattr_iter_begin
IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
erofs: root inode @ nid 36
erofs: mounted on /dev/loop1 with opts: .
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
------------[ cut here ]------------
kernel BUG at drivers/staging/erofs/xattr.c:186!
IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
CPU: 0 PID: 9903 Comm: syz-executor.1 Not tainted 4.19.207-syzkaller #0
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:inline_xattr_iter_begin+0x37a/0x4a0 drivers/staging/erofs/xattr.c:186
Code: 08 84 d2 0f 85 30 01 00 00 0f b7 43 ea 48 83 c4 18 5b 41 5c 44 29 e8 41 5d 41 5e 41 5f 5d c3 b8 c3 ff ff ff 0f 83 1e ff ff ff <0f> 0b 48 89 45 d0 e8 5b 36 aa fb 48 8b 45 d0 e9 0a fd ff ff 4c 89
RSP: 0018:ffff8880980ffc40 EFLAGS: 00010283
RAX: 00000000ffffffc3 RBX: ffff888080d8f4c0 RCX: 0000000000000000
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
RDX: 0000000000000048 RSI: ffff888080d8f4c0 RDI: ffff888080d8f4ac
RBP: ffff8880980ffc80 R08: fffff940004099a7 R09: fffff940004099a6
R10: fffff940004099a6 R11: ffffea000204cd37 R12: ffff888080d8f498
R13: 0000000000000280 R14: ffff8880980ffd40 R15: ffff888080d8f4aa
FS:  00007f60c3ed2700(0000) GS:ffff8880ba200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564b8c043160 CR3: 000000009781a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 inline_listxattr drivers/staging/erofs/xattr.c:584 [inline]
 erofs_listxattr+0x125/0xd30 drivers/staging/erofs/xattr.c:653
ieee80211 phy14: Selected rate control algorithm 'minstrel_ht'
 vfs_listxattr+0xd4/0x140 fs/xattr.c:392
 listxattr+0xcb/0xe0 fs/xattr.c:687
 path_listxattr+0xba/0x120 fs/xattr.c:711
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
 __do_sys_listxattr fs/xattr.c:723 [inline]
 __se_sys_listxattr fs/xattr.c:720 [inline]
 __x64_sys_listxattr+0x73/0xb0 fs/xattr.c:720
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f60c3ed2188 EFLAGS: 00000246 ORIG_RAX: 00000000000000c2
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffddc534c9f R14: 00007f60c3ed2300 R15: 0000000000022000
Modules linked in:
Bluetooth: hci0: command 0x0419 tx timeout
Bluetooth: hci3: command 0x0419 tx timeout
wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Bluetooth: hci1: command 0x0419 tx timeout
---[ end trace 086056cf1dea63f8 ]---
wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
Bluetooth: hci2: command 0x0419 tx timeout
erofs: read_super, device -> /dev/loop3
Bluetooth: hci4: command 0x0419 tx timeout
RIP: 0010:inline_xattr_iter_begin+0x37a/0x4a0 drivers/staging/erofs/xattr.c:186
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
Code: 08 84 d2 0f 85 30 01 00 00 0f b7 43 ea 48 83 c4 18 5b 41 5c 44 29 e8 41 5d 41 5e 41 5f 5d c3 b8 c3 ff ff ff 0f 83 1e ff ff ff <0f> 0b 48 89 45 d0 e8 5b 36 aa fb 48 8b 45 d0 e9 0a fd ff ff 4c 89
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
RSP: 0018:ffff8880980ffc40 EFLAGS: 00010283
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
erofs: options -> 
Bluetooth: hci5: command 0x0419 tx timeout
RAX: 00000000ffffffc3 RBX: ffff888080d8f4c0 RCX: 0000000000000000
ieee80211 phy15: Selected rate control algorithm 'minstrel_ht'
wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
erofs: root inode @ nid 36
IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
erofs: read_super, device -> /dev/loop0
RDX: 0000000000000048 RSI: ffff888080d8f4c0 RDI: ffff888080d8f4ac
IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
erofs: mounted on /dev/loop3 with opts: .
erofs: options -> 
RBP: ffff8880980ffc80 R08: fffff940004099a7 R09: fffff940004099a6
erofs: root inode @ nid 36
R10: fffff940004099a6 R11: ffffea000204cd37 R12: ffff888080d8f498
erofs: mounted on /dev/loop0 with opts: .
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
erofs: unmounted for /dev/loop3
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
erofs: unmounted for /dev/loop0
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
R13: 0000000000000280 R14: ffff8880980ffd40 R15: ffff888080d8f4aa
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
FS:  00007f60c3ed2700(0000) GS:ffff8880ba300000(0000) knlGS:0000000000000000
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
CR2: 00007ffdfc6c1ff8 CR3: 000000009781a000 CR4: 00000000001406e0
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
erofs: read_super, device -> /dev/loop3
erofs: read_super, device -> /dev/loop0
erofs: read_super, device -> /dev/loop2
erofs: read_super, device -> /dev/loop5
erofs: options -> 
erofs: options -> 
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: options ->