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Message-ID: <000000000000f55b69060daff97a@google.com> Date: Fri, 29 Dec 2023 17:22:04 -0800 From: syzbot <syzbot+59dcc2e7283a6f5f5ba1@...kaller.appspotmail.com> To: hdanton@...a.com, linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: Re: [syzbot] [dri?] WARNING in drm_prime_destroy_file_private (2) Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: general protection fault in drm_prime_del_handles general protection fault, probably for non-canonical address 0xe000130900000017: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0x0000b848000000b8-0x0000b848000000bf] CPU: 1 PID: 5576 Comm: syz-executor.0 Not tainted 6.7.0-rc7-syzkaller-00041-gf016f7547aee-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:292 [inline] RIP: 0010:rb_erase+0xbb/0x1360 lib/rbtree.c:443 Code: 5e 10 4c 89 f5 48 ba 00 00 00 00 00 fc ff df 48 85 db 75 0b e9 e8 04 00 00 48 89 dd 48 89 c3 4c 8d 63 10 4c 89 e0 48 c1 e8 03 <80> 3c 10 00 0f 85 de 0b 00 00 48 8b 43 10 48 85 c0 75 dc 4c 8d 7b RSP: 0018:ffffc9000526fd20 EFLAGS: 00010216 RAX: 0000170900000017 RBX: 0000b848000000a8 RCX: ffff88806486d408 RDX: dffffc0000000000 RSI: ffff88806486d408 RDI: ffff88802919b810 RBP: ffffffff84f351e0 R08: 0000000000000000 R09: fffffbfff1e327ba R10: ffffc9000526fd70 R11: 0000000000000000 R12: 0000b848000000b8 R13: ffff88802808eff8 R14: ffff88802919b800 R15: 0000000000000001 FS: 0000555556b94480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f01823cd5e8 CR3: 0000000023343000 CR4: 0000000000350ef0 Call Trace: <TASK> drm_prime_del_handles+0x55/0xb0 drivers/gpu/drm/drm_prime.c:203 drm_file_free.part.0+0x73b/0xba0 drivers/gpu/drm/drm_file.c:290 drm_file_free drivers/gpu/drm/drm_file.c:247 [inline] drm_close_helper.isra.0+0x180/0x1f0 drivers/gpu/drm/drm_file.c:308 drm_release+0x22a/0x4f0 drivers/gpu/drm/drm_file.c:495 __fput+0x270/0xb70 fs/file_table.c:394 __fput_sync+0x47/0x50 fs/file_table.c:475 __do_sys_close fs/open.c:1587 [inline] __se_sys_close fs/open.c:1572 [inline] __x64_sys_close+0x87/0xf0 fs/open.c:1572 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f32ec87bbda Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24 RSP: 002b:00007ffe0da98170 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f32ec87bbda RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f32ec99d980 R08: 0000001b2ea60000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000014e33 R13: ffffffffffffffff R14: 00007f32ec400000 R15: 0000000000014af2 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:292 [inline] RIP: 0010:rb_erase+0xbb/0x1360 lib/rbtree.c:443 Code: 5e 10 4c 89 f5 48 ba 00 00 00 00 00 fc ff df 48 85 db 75 0b e9 e8 04 00 00 48 89 dd 48 89 c3 4c 8d 63 10 4c 89 e0 48 c1 e8 03 <80> 3c 10 00 0f 85 de 0b 00 00 48 8b 43 10 48 85 c0 75 dc 4c 8d 7b RSP: 0018:ffffc9000526fd20 EFLAGS: 00010216 RAX: 0000170900000017 RBX: 0000b848000000a8 RCX: ffff88806486d408 RDX: dffffc0000000000 RSI: ffff88806486d408 RDI: ffff88802919b810 RBP: ffffffff84f351e0 R08: 0000000000000000 R09: fffffbfff1e327ba R10: ffffc9000526fd70 R11: 0000000000000000 R12: 0000b848000000b8 R13: ffff88802808eff8 R14: ffff88802919b800 R15: 0000000000000001 FS: 0000555556b94480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f01823cd5e8 CR3: 0000000023343000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 5e pop %rsi 1: 10 4c 89 f5 adc %cl,-0xb(%rcx,%rcx,4) 5: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx c: fc ff df f: 48 85 db test %rbx,%rbx 12: 75 0b jne 0x1f 14: e9 e8 04 00 00 jmp 0x501 19: 48 89 dd mov %rbx,%rbp 1c: 48 89 c3 mov %rax,%rbx 1f: 4c 8d 63 10 lea 0x10(%rbx),%r12 23: 4c 89 e0 mov %r12,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) <-- trapping instruction 2e: 0f 85 de 0b 00 00 jne 0xc12 34: 48 8b 43 10 mov 0x10(%rbx),%rax 38: 48 85 c0 test %rax,%rax 3b: 75 dc jne 0x19 3d: 4c rex.WR 3e: 8d .byte 0x8d 3f: 7b .byte 0x7b Tested on: commit: f016f754 Merge tag 'gpio-fixes-for-v6.7-rc8' of git://.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master console output: https://syzkaller.appspot.com/x/log.txt?x=14b493a1e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=c7bcb8f62f1e2c3e dashboard link: https://syzkaller.appspot.com/bug?extid=59dcc2e7283a6f5f5ba1 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=1510031de80000
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