ci starts bisection 2023-02-13 22:14:41.97990936 +0000 UTC m=+42718.472969386
bisecting fixing commit since 77856d911a8c8724ee8e2b09d55979fc1de8f1c0
building syzkaller on 05494336991504e3c6137b89eeddd492e17af6b6
ensuring issue is reproducible on original commit 77856d911a8c8724ee8e2b09d55979fc1de8f1c0
testing commit 77856d911a8c8724ee8e2b09d55979fc1de8f1c0 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 1b363b8093668eb2cf39a6567c5c4a264917c0082220f0a4f91eb06759fef1ab
run #0: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #1: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #2: crashed: KASAN: out-of-bounds Read in reiserfs_release_objectid
run #3: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #4: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #5: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #6: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #7: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #8: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #9: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #10: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #11: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #12: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #13: crashed: KASAN: out-of-bounds Read in reiserfs_release_objectid
run #14: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #15: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #16: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #17: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #18: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
run #19: crashed: KASAN: use-after-free Read in reiserfs_release_objectid
testing current HEAD b408817d48840847c00052ae0e02a54311913073
testing commit b408817d48840847c00052ae0e02a54311913073 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: ada83cc69a92d8d0ac2ab9fb7060ed3260bbe619307cd483d89454820bf458a0
all runs: crashed: INFO: trying to register non-static key in net_free
revisions tested: 2, total time: 27m30.578228471s (build: 18m33.895396945s, test: 8m16.064839772s)
the crash still happens on HEAD
commit msg: Merge tag 'platform-drivers-x86-v6.2-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
crash: INFO: trying to register non-static key in net_free
INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 1 PID: 6150 Comm: syz-executor.0 Not tainted 6.2.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x5b/0x81 lib/dump_stack.c:106
assign_lock_key kernel/locking/lockdep.c:981 [inline]
register_lock_class+0xf1b/0x1120 kernel/locking/lockdep.c:1294
__lock_acquire+0x109/0x56d0 kernel/locking/lockdep.c:4934
lock_acquire kernel/locking/lockdep.c:5668 [inline]
lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3d/0x60 kernel/locking/spinlock.c:162
ref_tracker_dir_exit+0x4c/0x3b0 lib/ref_tracker.c:24
net_free net/core/net_namespace.c:442 [inline]
net_free+0x59/0x80 net/core/net_namespace.c:436
copy_net_ns+0x3d0/0x540 net/core/net_namespace.c:493
create_new_namespaces+0x35a/0x920 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0x8a/0x1a0 kernel/nsproxy.c:228
ksys_unshare+0x30d/0x6b0 kernel/fork.c:3202
__do_sys_unshare kernel/fork.c:3273 [inline]
__se_sys_unshare kernel/fork.c:3271 [inline]
__x64_sys_unshare+0x2c/0x40 kernel/fork.c:3271
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2bea48d697
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 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:00007fff7202e4a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fff7202eae8 RCX: 00007f2bea48d697
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007fff7202e588 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00000000fffffff1
R13: 00007fff7202e580 R14: 0000000000000000 R15: 0000000000000000
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 6150 Comm: syz-executor.0 Not tainted 6.2.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RIP: 0010:ref_tracker_dir_exit+0x8c/0x3b0 lib/ref_tracker.c:25
Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 2b 03 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 75 60 4c 89 f2 4d 89 f1 48 c1 ea 03 <80> 3c 02 00 0f 85 f2 02 00 00 4c 39 34 24 49 8b 1e 0f 84 11 01 00
RSP: 0018:ffffc9000a2b7d00 EFLAGS: 00010056
RAX: dffffc0000000000 RBX: 00000000fffffffc RCX: ffffffff815ba5b4
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc9000a2b7c70
RBP: ffff8880781901c0 R08: 0000000000000001 R09: 0000000000000000
R10: fffff52001456f8e R11: 3e4b5341542f3c20 R12: ffff888078190000
R13: ffffffff8b658b00 R14: 0000000000000000 R15: ffffffff8b6450c4
FS: 00005555568e9400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000df1ecd CR3: 0000000075760000 CR4: 0000000000350ee0
Call Trace:
net_free net/core/net_namespace.c:442 [inline]
net_free+0x59/0x80 net/core/net_namespace.c:436
copy_net_ns+0x3d0/0x540 net/core/net_namespace.c:493
create_new_namespaces+0x35a/0x920 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0x8a/0x1a0 kernel/nsproxy.c:228
ksys_unshare+0x30d/0x6b0 kernel/fork.c:3202
__do_sys_unshare kernel/fork.c:3273 [inline]
__se_sys_unshare kernel/fork.c:3271 [inline]
__x64_sys_unshare+0x2c/0x40 kernel/fork.c:3271
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2bea48d697
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 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:00007fff7202e4a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fff7202eae8 RCX: 00007f2bea48d697
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007fff7202e588 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00000000fffffff1
R13: 00007fff7202e580 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ref_tracker_dir_exit+0x8c/0x3b0 lib/ref_tracker.c:25
Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 2b 03 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 75 60 4c 89 f2 4d 89 f1 48 c1 ea 03 <80> 3c 02 00 0f 85 f2 02 00 00 4c 39 34 24 49 8b 1e 0f 84 11 01 00
RSP: 0018:ffffc9000a2b7d00 EFLAGS: 00010056
RAX: dffffc0000000000 RBX: 00000000fffffffc RCX: ffffffff815ba5b4
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc9000a2b7c70
RBP: ffff8880781901c0 R08: 0000000000000001 R09: 0000000000000000
R10: fffff52001456f8e R11: 3e4b5341542f3c20 R12: ffff888078190000
R13: ffffffff8b658b00 R14: 0000000000000000 R15: ffffffff8b6450c4
FS: 00005555568e9400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000df1ecd CR3: 0000000075760000 CR4: 0000000000350ee0
----------------
Code disassembly (best guess), 4 bytes skipped:
0: 48 c1 ea 03 shr $0x3,%rdx
4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
8: 0f 85 2b 03 00 00 jne 0x339
e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
15: fc ff df
18: 4c 8b 75 60 mov 0x60(%rbp),%r14
1c: 4c 89 f2 mov %r14,%rdx
1f: 4d 89 f1 mov %r14,%r9
22: 48 c1 ea 03 shr $0x3,%rdx
* 26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2a: 0f 85 f2 02 00 00 jne 0x322
30: 4c 39 34 24 cmp %r14,(%rsp)
34: 49 8b 1e mov (%r14),%rbx
37: 0f .byte 0xf
38: 84 11 test %dl,(%rcx)
3a: 01 00 add %eax,(%rax)