syzbot


general protection fault in ieee80211_rx_handlers

Status: auto-obsoleted due to no activity on 2023/04/03 21:09
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+5349d8871c86ad83e453@syzkaller.appspotmail.com
First crash: 389d, last: 389d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in ieee80211_rx_handlers wireless C 8 183d 239d 23/26 fixed on 2023/10/12 12:47

Sample crash report:
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: 20936 Comm: syz-executor.2 Not tainted 6.2.0-rc6-next-20230202-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:ether_addr_equal include/linux/etherdevice.h:349 [inline]
RIP: 0010:ieee80211_rx_h_sta_process net/mac80211/rx.c:1751 [inline]
RIP: 0010:ieee80211_rx_handlers+0x1c11/0x9bd0 net/mac80211/rx.c:3990
Code: 00 4c 89 e7 e8 60 28 05 00 48 89 c6 48 8b 44 24 30 48 c1 e8 03 80 3c 28 00 0f 85 9e 50 00 00 48 89 f0 4d 8b 6f 18 48 c1 e8 03 <0f> b6 14 28 48 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 fe
RSP: 0018:ffffc900001e0838 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880252ef000 RCX: 0000000000000100
RDX: ffff88807d751d40 RSI: 0000000000000000 RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000017
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888077636050
R13: ffff888030624c80 R14: ffff8880252ef028 R15: ffffc900001e0d58
FS:  00007f3e0dbd7700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33240000 CR3: 000000002a84c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_invoke_rx_handlers net/mac80211/rx.c:4043 [inline]
 ieee80211_prepare_and_rx_handle+0x1c04/0x5d60 net/mac80211/rx.c:4863
 ieee80211_rx_for_interface+0x112/0x200 net/mac80211/rx.c:4946
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5104 [inline]
 ieee80211_rx_list+0x1cfc/0x2d10 net/mac80211/rx.c:5239
 ieee80211_rx_napi+0xdf/0x410 net/mac80211/rx.c:5262
 ieee80211_rx include/net/mac80211.h:4893 [inline]
 ieee80211_tasklet_handler+0xd8/0x140 net/mac80211/main.c:315
 tasklet_action_common.constprop.0+0x201/0x2e0 kernel/softirq.c:797
 __do_softirq+0x2e3/0xae3 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 common_interrupt+0xad/0xd0 arch/x86/kernel/irq.c:240
 </IRQ>
 <TASK>
 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:636
RIP: 0010:__sanitizer_cov_trace_pc+0x50/0x70 kernel/kcov.c:212
Code: 0e 85 c9 74 35 8b 82 74 15 00 00 85 c0 74 2b 8b 82 50 15 00 00 83 f8 02 75 20 48 8b 8a 58 15 00 00 8b 92 54 15 00 00 48 8b 01 <48> 83 c0 01 48 39 c2 76 07 48 89 01 48 89 34 c1 c3 66 66 2e 0f 1f
RSP: 0018:ffffc9000539fc80 EFLAGS: 00000246
RAX: 0000000000004625 RBX: dffffc0000000000 RCX: ffffc900049b1000
RDX: 0000000000040000 RSI: ffffffff81f4d9c4 RDI: 0000000000000005
RBP: ffff888077af05e0 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000002 R14: ffff88801ce32510 R15: 0000000000000002
 __fsnotify_parent+0xa4/0xa60 fs/notify/fsnotify.c:182
 fsnotify_parent include/linux/fsnotify.h:77 [inline]
 fsnotify_file include/linux/fsnotify.h:99 [inline]
 fsnotify_modify include/linux/fsnotify.h:317 [inline]
 do_sendfile+0x893/0x12c0 fs/read_write.c:1269
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64 fs/read_write.c:1309 [inline]
 __x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1309
 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: 0033:0x7f3e0ce8c0c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f3e0dbd7168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f3e0cfac120 RCX: 00007f3e0ce8c0c9
RDX: 0000000000000000 RSI: 000000000000000b RDI: 0000000000000007
RBP: 00007f3e0cee7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000001dd00 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffca744750f R14: 00007f3e0dbd7300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ether_addr_equal include/linux/etherdevice.h:349 [inline]
RIP: 0010:ieee80211_rx_h_sta_process net/mac80211/rx.c:1751 [inline]
RIP: 0010:ieee80211_rx_handlers+0x1c11/0x9bd0 net/mac80211/rx.c:3990
Code: 00 4c 89 e7 e8 60 28 05 00 48 89 c6 48 8b 44 24 30 48 c1 e8 03 80 3c 28 00 0f 85 9e 50 00 00 48 89 f0 4d 8b 6f 18 48 c1 e8 03 <0f> b6 14 28 48 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 fe
RSP: 0018:ffffc900001e0838 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880252ef000 RCX: 0000000000000100
RDX: ffff88807d751d40 RSI: 0000000000000000 RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000017
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888077636050
R13: ffff888030624c80 R14: ffff8880252ef028 R15: ffffc900001e0d58
FS:  00007f3e0dbd7700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33240000 CR3: 000000002a84c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 4c 89 e7          	add    %cl,-0x19(%rcx,%rcx,4)
   4:	e8 60 28 05 00       	callq  0x52869
   9:	48 89 c6             	mov    %rax,%rsi
   c:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
  11:	48 c1 e8 03          	shr    $0x3,%rax
  15:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
  19:	0f 85 9e 50 00 00    	jne    0x50bd
  1f:	48 89 f0             	mov    %rsi,%rax
  22:	4d 8b 6f 18          	mov    0x18(%r15),%r13
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	0f b6 14 28          	movzbl (%rax,%rbp,1),%edx <-- trapping instruction
  2e:	48 89 f0             	mov    %rsi,%rax
  31:	83 e0 07             	and    $0x7,%eax
  34:	83 c0 03             	add    $0x3,%eax
  37:	38 d0                	cmp    %dl,%al
  39:	7c 08                	jl     0x43
  3b:	84 d2                	test   %dl,%dl
  3d:	0f                   	.byte 0xf
  3e:	85 fe                	test   %edi,%esi

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/02/02 21:08 linux-next ea4dabbb4ad7 16d19e30 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in ieee80211_rx_handlers
* Struck through repros no longer work on HEAD.