IPv6: NLM_F_CREATE should be set when creating new route
IPv6: NLM_F_CREATE should be set when creating new route
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
======================================================
WARNING: possible circular locking dependency detected
4.19.211-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.5/20266 is trying to acquire lock:
0000000005166688 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline]
0000000005166688 (sb_writers#3){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360
but task is already holding lock:
00000000e8e8a109 (&iint->mutex){+.+.}, at: process_measurement+0x316/0x1440 security/integrity/ima/ima_main.c:224
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
-> #1 (&iint->mutex){+.+.}:
process_measurement+0x316/0x1440 security/integrity/ima/ima_main.c:224
ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:391
do_last fs/namei.c:3425 [inline]
path_openat+0x7e4/0x2df0 fs/namei.c:3537
do_filp_open+0x18c/0x3f0 fs/namei.c:3567
do_sys_open+0x3b3/0x520 fs/open.c:1085
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #0 (sb_writers#3){.+.+}:
percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
__sb_start_write+0x6e/0x2a0 fs/super.c:1366
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
sb_start_write include/linux/fs.h:1579 [inline]
mnt_want_write+0x3a/0xb0 fs/namespace.c:360
ovl_maybe_copy_up+0x11f/0x190 fs/overlayfs/copy_up.c:888
ovl_open+0xb4/0x260 fs/overlayfs/file.c:126
do_dentry_open+0x4aa/0x1160 fs/open.c:796
vfs_open fs/open.c:902 [inline]
dentry_open+0x132/0x1d0 fs/open.c:918
ima_calc_file_hash+0x628/0x8a0 security/integrity/ima/ima_crypto.c:435
ima_collect_measurement+0x4c4/0x570 security/integrity/ima/ima_api.c:231
process_measurement+0xddd/0x1440 security/integrity/ima/ima_main.c:284
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:391
do_last fs/namei.c:3425 [inline]
path_openat+0x7e4/0x2df0 fs/namei.c:3537
do_filp_open+0x18c/0x3f0 fs/namei.c:3567
do_sys_open+0x3b3/0x520 fs/open.c:1085
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&iint->mutex);
lock(sb_writers#3);
lock(&iint->mutex);
lock(sb_writers#3);
*** DEADLOCK ***
1 lock held by syz-executor.5/20266:
#0: 00000000e8e8a109 (&iint->mutex){+.+.}, at: process_measurement+0x316/0x1440 security/integrity/ima/ima_main.c:224
stack backtrace:
CPU: 0 PID: 20266 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222
check_prev_add kernel/locking/lockdep.c:1866 [inline]
check_prevs_add kernel/locking/lockdep.c:1979 [inline]
validate_chain kernel/locking/lockdep.c:2420 [inline]
__lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416
lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
__sb_start_write+0x6e/0x2a0 fs/super.c:1366
sb_start_write include/linux/fs.h:1579 [inline]
mnt_want_write+0x3a/0xb0 fs/namespace.c:360
ovl_maybe_copy_up+0x11f/0x190 fs/overlayfs/copy_up.c:888
ovl_open+0xb4/0x260 fs/overlayfs/file.c:126
do_dentry_open+0x4aa/0x1160 fs/open.c:796
vfs_open fs/open.c:902 [inline]
dentry_open+0x132/0x1d0 fs/open.c:918
ima_calc_file_hash+0x628/0x8a0 security/integrity/ima/ima_crypto.c:435
ima_collect_measurement+0x4c4/0x570 security/integrity/ima/ima_api.c:231
process_measurement+0xddd/0x1440 security/integrity/ima/ima_main.c:284
ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:391
do_last fs/namei.c:3425 [inline]
path_openat+0x7e4/0x2df0 fs/namei.c:3537
do_filp_open+0x18c/0x3f0 fs/namei.c:3567
do_sys_open+0x3b3/0x520 fs/open.c:1085
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f39348025a9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3932d75168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f3934922f80 RCX: 00007f39348025a9
RDX: 0000000000000003 RSI: 0000000020000300 RDI: ffffffffffffff9c
RBP: 00007f393485d7b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcc3e27d4f R14: 00007f3932d75300 R15: 0000000000022000
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
*** Guest State ***
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
CR0: actual=0x0000000000000020, shadow=0x0000000000000000, gh_mask=fffffffffffffff7
CR4: actual=0x0000000000002040, shadow=0x0000000000000000, gh_mask=ffffffffffffe871
netlink: 44218 bytes leftover after parsing attributes in process `syz-executor.4'.
CR3 = 0x0000000000000000
RSP = 0x0000000000000000 RIP = 0x000000000000fff0
RFLAGS=0x00000002 DR7 = 0x0000000000000400
device bridge_slave_1 left promiscuous mode
Sysenter RSP=0000000000000000 CS:RIP=0000:0000000000000000
bridge0: port 2(bridge_slave_1) entered disabled state
CS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
device bridge_slave_0 left promiscuous mode
DS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
bridge0: port 1(bridge_slave_0) entered disabled state
SS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
ES: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
FS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
GS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
GDTR: limit=0x00000000, base=0x0000000000000000
LDTR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
IDTR: limit=0x00000000, base=0x0000000000000000
TR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
EFER = 0x0000000000000000 PAT = 0x0007040600070406
DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000
Interruptibility = 00000000 ActivityState = 00000000
*** Host State ***
RIP = 0xffffffff811a9c2f RSP = 0xffff88804dec78c0
CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040
FSBase=00007f6530f13700 GSBase=ffff8880ba000000 TRBase=fffffe0000003000
GDTBase=fffffe0000001000 IDTBase=fffffe0000000000
CR0=0000000080050033 CR3=0000000097fce000 CR4=00000000003426f0
Sysenter RSP=fffffe0000003000 CS:RIP=0010:ffffffff88201290
EFER = 0x0000000000000d01 PAT = 0x0407050600070106
*** Control State ***
PinBased=0000003f CPUBased=b5a06dfa SecondaryExec=000000e2
EntryControls=0000d1ff ExitControls=002fefff
ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000
VMEntry: intr_info=00000000 errcode=00000000 ilen=00000000
VMExit: intr_info=00000000 errcode=00000000 ilen=00000000
reason=80000021 qualification=0000000000000000
IDTVectoring: info=00000000 errcode=00000000
TSC Offset = 0xffffff4cb01f1cc2
TPR Threshold = 0x00
EPT pointer = 0x00000000a27d501e
Virtual processor ID = 0x0001
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
*** Guest State ***
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
CR0: actual=0x0000000000000020, shadow=0x0000000000000000, gh_mask=fffffffffffffff7
CR4: actual=0x0000000000002040, shadow=0x0000000000000000, gh_mask=ffffffffffffe871
CR3 = 0x0000000000000000
RSP = 0x0000000000000000 RIP = 0x000000000000fff0
RFLAGS=0x00000002 DR7 = 0x0000000000000400
Sysenter RSP=0000000000000000 CS:RIP=0000:0000000000000000
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
CS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
DS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
SS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
ES: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
FS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
GS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
GDTR: limit=0x00000000, base=0x0000000000000000
LDTR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
IDTR: limit=0x00000000, base=0x0000000000000000
TR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
EFER = 0x0000000000000000 PAT = 0x0007040600070406
DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000
Interruptibility = 00000000 ActivityState = 00000000
*** Host State ***
RIP = 0xffffffff811a9c2f RSP = 0xffff888048f3f8c0
CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040
FSBase=00007f6530f13700 GSBase=ffff8880ba100000 TRBase=fffffe0000034000
GDTBase=fffffe0000032000 IDTBase=fffffe0000000000
CR0=0000000080050033 CR3=00000000a54f0000 CR4=00000000003426e0
Sysenter RSP=fffffe0000034000 CS:RIP=0010:ffffffff88201290
EFER = 0x0000000000000d01 PAT = 0x0407050600070106
*** Control State ***
PinBased=0000003f CPUBased=b5a06dfa SecondaryExec=000000e2
EntryControls=0000d1ff ExitControls=002fefff
ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000
VMEntry: intr_info=00000000 errcode=00000000 ilen=00000000
VMExit: intr_info=00000000 errcode=00000000 ilen=00000000
reason=80000021 qualification=0000000000000000
IDTVectoring: info=00000000 errcode=00000000
TSC Offset = 0xffffff4c4effcd1e
TPR Threshold = 0x00
EPT pointer = 0x00000000aaf0e01e
Virtual processor ID = 0x0001
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
*** Guest State ***
CR0: actual=0x0000000000000020, shadow=0x0000000000000000, gh_mask=fffffffffffffff7
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
CR4: actual=0x0000000000002040, shadow=0x0000000000000000, gh_mask=ffffffffffffe871
CR3 = 0x0000000000000000
RSP = 0x0000000000000000 RIP = 0x000000000000fff0
RFLAGS=0x00000002 DR7 = 0x0000000000000400
Sysenter RSP=0000000000000000 CS:RIP=0000:0000000000000000
CS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
DS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
SS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
ES: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
FS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
GS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
GDTR: limit=0x00000000, base=0x0000000000000000
LDTR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
IDTR: limit=0x00000000, base=0x0000000000000000
TR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
EFER = 0x0000000000000000 PAT = 0x0007040600070406
DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000
Interruptibility = 00000000 ActivityState = 00000000
*** Host State ***
RIP = 0xffffffff811a9c2f RSP = 0xffff888051d878c0
CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040
FSBase=00007f6530f13700 GSBase=ffff8880ba000000 TRBase=fffffe0000003000
GDTBase=fffffe0000001000 IDTBase=fffffe0000000000
CR0=0000000080050033 CR3=000000009a004000 CR4=00000000003426f0
Sysenter RSP=fffffe0000003000 CS:RIP=0010:ffffffff88201290
EFER = 0x0000000000000d01 PAT = 0x0407050600070106
*** Control State ***
PinBased=0000003f CPUBased=b5a06dfa SecondaryExec=000000e2
EntryControls=0000d1ff ExitControls=002fefff
ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000
VMEntry: intr_info=00000000 errcode=00000000 ilen=00000000
VMExit: intr_info=00000000 errcode=00000000 ilen=00000000
reason=80000021 qualification=0000000000000000
IDTVectoring: info=00000000 errcode=00000000
TSC Offset = 0xffffff4c11001098
TPR Threshold = 0x00
EPT pointer = 0x00000000a98a301e
Virtual processor ID = 0x0001
*** Guest State ***
CR0: actual=0x0000000000000020, shadow=0x0000000000000000, gh_mask=fffffffffffffff7
CR4: actual=0x0000000000002040, shadow=0x0000000000000000, gh_mask=ffffffffffffe871
CR3 = 0x0000000000000000
RSP = 0x0000000000000000 RIP = 0x000000000000fff0
RFLAGS=0x00000002 DR7 = 0x0000000000000400
Sysenter RSP=0000000000000000 CS:RIP=0000:0000000000000000
CS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
DS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
SS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
ES: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
FS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
GS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
GDTR: limit=0x00000000, base=0x0000000000000000
LDTR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
IDTR: limit=0x00000000, base=0x0000000000000000
TR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000
EFER = 0x0000000000000000 PAT = 0x0007040600070406
DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000
Interruptibility = 00000000 ActivityState = 00000000
*** Host State ***
RIP = 0xffffffff811a9c2f RSP = 0xffff88804c2678c0
CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040
FSBase=00007f6530f13700 GSBase=ffff8880ba100000 TRBase=fffffe0000034000
GDTBase=fffffe0000032000 IDTBase=fffffe0000000000
CR0=0000000080050033 CR3=00000000a2ca6000 CR4=00000000003426e0
Sysenter RSP=fffffe0000034000 CS:RIP=0010:ffffffff88201290
EFER = 0x0000000000000d01 PAT = 0x0407050600070106
*** Control State ***
PinBased=0000003f CPUBased=b5a06dfa SecondaryExec=000000e2
EntryControls=0000d1ff ExitControls=002fefff
ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000
VMEntry: intr_info=00000000 errcode=00000000 ilen=00000000
VMExit: intr_info=00000000 errcode=00000000 ilen=00000000
reason=80000021 qualification=0000000000000000
IDTVectoring: info=00000000 errcode=00000000
TSC Offset = 0xffffff4bb78adcea
TPR Threshold = 0x00
EPT pointer = 0x000000009d6e201e
Virtual processor ID = 0x0001
EXT4-fs (loop2): bad geometry: block count 512 exceeds size of device (64 blocks)
EXT4-fs (loop2): bad geometry: block count 512 exceeds size of device (64 blocks)
IPVS: ftp: loaded support on port[0] = 21
EXT4-fs (loop2): bad geometry: block count 512 exceeds size of device (64 blocks)
device �A,Q^�����n}�]M entered promiscuous mode
EXT4-fs (loop2): bad geometry: block count 512 exceeds size of device (64 blocks)
device �A,Q^�����n}�]M entered promiscuous mode
device �A,Q^�����n}�]M entered promiscuous mode
device �A,Q^�����n}�]M entered promiscuous mode
IPVS: ftp: loaded support on port[0] = 21
audit: type=1800 audit(1666749982.840:139): pid=20955 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="file0" dev="sda1" ino=14322 res=0
audit: type=1804 audit(1666749982.840:140): pid=20955 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir2885739875/syzkaller.6dn5uZ/413/file0" dev="sda1" ino=14322 res=1
audit: type=1804 audit(1666749982.900:141): pid=20941 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir2885739875/syzkaller.6dn5uZ/413/file0" dev="sda1" ino=14322 res=1
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
9pnet: Could not find request transport: xen
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
audit: type=1804 audit(1666749984.720:142): pid=21268 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir2762061743/syzkaller.H4hR83/440/file0" dev="sda1" ino=15260 res=1
IPVS: ftp: loaded support on port[0] = 21
audit: type=1804 audit(1666749984.760:143): pid=21268 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir2762061743/syzkaller.H4hR83/440/file0" dev="sda1" ino=15260 res=1