syzbot


kernel BUG in dma_alloc_attrs

Status: fixed on 2024/11/12 23:31
Subsystems: iommu
[Documentation on labels]
Reported-by: syzbot+b4bfacdec173efaa8567@syzkaller.appspotmail.com
Fix commit: 78b2770c935f dma-mapping: fix tracing dma_alloc/free with vmalloc'd memory
First crash: 54d, last: 45d
Discussions (2)
Title Replies (including bot) Last reply
[PATCH] dma-mapping: Fix tracing dma_alloc/free with vmalloc'd memory 2 (2) 2024/10/17 15:41
[syzbot] [iommu?] kernel BUG in dma_alloc_attrs 4 (5) 2024/10/17 14:48

Sample crash report:
------------[ cut here ]------------
kernel BUG at arch/x86/mm/physaddr.c:28!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5114 Comm: syz-executor411 Not tainted 6.12.0-rc2-syzkaller-00205-g1d227fcc7222 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__phys_addr+0x162/0x170 arch/x86/mm/physaddr.c:28
Code: e8 23 e8 51 00 48 c7 c7 c0 86 7a 8e 4c 89 f6 4c 89 fa e8 f1 98 b1 03 e9 45 ff ff ff e8 07 e8 51 00 90 0f 0b e8 ff e7 51 00 90 <0f> 0b e8 f7 e7 51 00 90 0f 0b 0f 1f 40 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90002d4f4c0 EFLAGS: 00010293
RAX: ffffffff8142ff51 RBX: 0000000000000001 RCX: ffff88800023a440
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002d4f5e8 R08: ffffffff8142fe9c R09: 312e64313a30303a
R10: dffffc0000000000 R11: fffff91ffff86755 R12: ffffe8ffffc33a60
R13: dffffc0000000000 R14: 000040800b111000 R15: 000000000000002e
FS:  0000555576947380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffabc3020f0 CR3: 000000004020a000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 virt_to_phys arch/x86/include/asm/io.h:131 [inline]
 perf_trace_dma_alloc+0x3dd/0x620 include/trace/events/dma.h:117
 trace_dma_alloc include/trace/events/dma.h:117 [inline]
 dma_alloc_attrs+0x46c/0x4e0 kernel/dma/mapping.c:622
 usbdev_mmap+0x247/0x900 drivers/usb/core/devio.c:251
 call_mmap include/linux/fs.h:2172 [inline]
 mmap_region+0x1add/0x2990 mm/mmap.c:1440
 do_mmap+0x8f0/0x1000 mm/mmap.c:496
 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588
 ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:542
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffabc28b979
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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:00007ffd4658b118 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ffabc28b979
RDX: 0000000001000002 RSI: 0000000000400000 RDI: 0000000020000000
RBP: 00007ffabc2fe5f0 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000011012 R11: 0000000000000246 R12: 0000000000000001
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__phys_addr+0x162/0x170 arch/x86/mm/physaddr.c:28
Code: e8 23 e8 51 00 48 c7 c7 c0 86 7a 8e 4c 89 f6 4c 89 fa e8 f1 98 b1 03 e9 45 ff ff ff e8 07 e8 51 00 90 0f 0b e8 ff e7 51 00 90 <0f> 0b e8 f7 e7 51 00 90 0f 0b 0f 1f 40 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90002d4f4c0 EFLAGS: 00010293
RAX: ffffffff8142ff51 RBX: 0000000000000001 RCX: ffff88800023a440
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002d4f5e8 R08: ffffffff8142fe9c R09: 312e64313a30303a
R10: dffffc0000000000 R11: fffff91ffff86755 R12: ffffe8ffffc33a60
R13: dffffc0000000000 R14: 000040800b111000 R15: 000000000000002e
FS:  0000555576947380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffabc3020f0 CR3: 000000004020a000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/10/11 20:03 upstream 1d227fcc7222 5e7b4bca .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in dma_alloc_attrs
2024/10/11 19:32 upstream 1d227fcc7222 5e7b4bca .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in dma_alloc_attrs
2024/10/20 08:14 upstream 715ca9dd687f cd6fc0a3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in dma_alloc_attrs
2024/10/11 18:57 upstream 1d227fcc7222 5e7b4bca .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in dma_alloc_attrs
* Struck through repros no longer work on HEAD.