general protection fault in tracing_release_file_tr

Status: premoderation: reported on 2026/08/03 03:11
Reported-by: syzbot+4e792a64f415ff18f366@syzkaller.appspotmail.com
First crash: 10d, last: 10d
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 general protection fault in tracing_release_file_tr 2 syz, C 6 6d00h 10d 0/2 upstream: reported C repro on 2026/08/03 03:48

Sample crash report:
general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
CPU: 0 PID: 2670 Comm: syz.8.792 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:tracing_release_file_tr+0x48/0x100 kernel/trace/trace.c:4499
Code: 81 c3 a8 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 06 19 37 00 48 8b 1b 48 83 c3 28 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 e9 18 37 00 48 8b 1b 48 85 db 74
RSP: 0018:ffffc900070cfdd8 EFLAGS: 00010206
RAX: 0000000000000005 RBX: 0000000000000028 RCX: ffff888133623b40
RDX: 0000000000000000 RSI: ffff888118011680 RDI: ffff88813bc17a80
RBP: ffffc900070cfdf8 R08: ffffc900070cfd6f R09: ffffc900070cfd40
R10: dffffc0000000000 R11: fffff52000e19fae R12: ffff888118011680
R13: ffff88813bc17a80 R14: 1ffff110230022d5 R15: dffffc0000000000
FS:  0000555585a88500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2b4ea0 CR3: 000000011e0c0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __fput+0x2dc/0x730 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x127/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:274
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f44e4882019
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe32468128 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffe32468210 RCX: 00007f44e4882019
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 000000000001973c R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b30520000 R11: 0000000000000246 R12: 00007ffe32468250
R13: 00007f44e4b09fac R14: 000000000001976f R15: 00007f44e4b09fa0
Modules linked in:
---[ end trace 69a227e6ada0c487 ]---
RIP: 0010:tracing_release_file_tr+0x48/0x100 kernel/trace/trace.c:4499
Code: 81 c3 a8 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 06 19 37 00 48 8b 1b 48 83 c3 28 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 e9 18 37 00 48 8b 1b 48 85 db 74
RSP: 0018:ffffc900070cfdd8 EFLAGS: 00010206
RAX: 0000000000000005 RBX: 0000000000000028 RCX: ffff888133623b40
RDX: 0000000000000000 RSI: ffff888118011680 RDI: ffff88813bc17a80
RBP: ffffc900070cfdf8 R08: ffffc900070cfd6f R09: ffffc900070cfd40
R10: dffffc0000000000 R11: fffff52000e19fae R12: ffff888118011680
R13: ffff88813bc17a80 R14: 1ffff110230022d5 R15: dffffc0000000000
FS:  0000555585a88500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f394ec84bb7 CR3: 000000011e0c0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	81 c3 a8 02 00 00    	add    $0x2a8,%ebx
   6:	48 89 d8             	mov    %rbx,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
  12:	74 08                	je     0x1c
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 06 19 37 00       	call   0x371922
  1c:	48 8b 1b             	mov    (%rbx),%rbx
  1f:	48 83 c3 28          	add    $0x28,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 e9 18 37 00       	call   0x371922
  39:	48 8b 1b             	mov    (%rbx),%rbx
  3c:	48 85 db             	test   %rbx,%rbx
  3f:	74                   	.byte 0x74

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/03 03:11 android13-5.10-lts 50b3a256e550 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in tracing_release_file_tr
2026/08/03 03:10 android13-5.10-lts 50b3a256e550 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in tracing_release_file_tr
* Struck through repros no longer work on HEAD.