Oops: general protection fault, probably for non-canonical address 0x76a030f00000485: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 1077 Comm: kworker/u4:10 Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:get_freepointer mm/slub.c:504 [inline]
RIP: 0010:get_freepointer_safe mm/slub.c:532 [inline]
RIP: 0010:__slab_alloc_node mm/slub.c:3993 [inline]
RIP: 0010:slab_alloc_node mm/slub.c:4152 [inline]
RIP: 0010:kmem_cache_alloc_node_noprof+0xec/0x380 mm/slub.c:4216
Code: 0f 84 8a 01 00 00 41 83 f8 ff 74 1a 48 8b 03 48 83 f8 ff 0f 84 8f 02 00 00 48 c1 e8 3a 41 39 c0 0f 85 6a 01 00 00 41 8b 46 28 <4a> 8b 1c 28 49 8d 4c 24 08 49 8b 36 4c 89 e8 4c 89 e2 65 48 0f c7
RSP: 0018:ffffc900026ef908 EFLAGS: 00010246
RAX: 0000000000000078 RBX: ffffea0000f49540 RCX: 0000000000046a30
RDX: 0000000000000000 RSI: 00000000000000f0 RDI: ffffffff8ea52d00
RBP: 00000000ffffffff R08: 00000000ffffffff R09: fffff520004ddf38
R10: dffffc0000000000 R11: fffff520004ddf38 R12: 00000000000d7b48
R13: 076a030f0000040d R14: ffff88801b7a18c0 R15: 0000000000000820
FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4588978ab8 CR3: 0000000059eac000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__alloc_skb+0x1c3/0x440 net/core/skbuff.c:668
alloc_skb include/linux/skbuff.h:1331 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
nsim_dev_trap_report_work+0x261/0xb50 drivers/net/netdevsim/dev.c:851
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
worker_thread+0x870/0xd30 kernel/workqueue.c:3398
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Modules linked in:
----------------
Code disassembly (best guess):
0: 0f 84 8a 01 00 00 je 0x190
6: 41 83 f8 ff cmp $0xffffffff,%r8d
a: 74 1a je 0x26
c: 48 8b 03 mov (%rbx),%rax
f: 48 83 f8 ff cmp $0xffffffffffffffff,%rax
13: 0f 84 8f 02 00 00 je 0x2a8
19: 48 c1 e8 3a shr $0x3a,%rax
1d: 41 39 c0 cmp %eax,%r8d
20: 0f 85 6a 01 00 00 jne 0x190
26: 41 8b 46 28 mov 0x28(%r14),%eax
* 2a: 4a 8b 1c 28 mov (%rax,%r13,1),%rbx <-- trapping instruction
2e: 49 8d 4c 24 08 lea 0x8(%r12),%rcx
33: 49 8b 36 mov (%r14),%rsi
36: 4c 89 e8 mov %r13,%rax
39: 4c 89 e2 mov %r12,%rdx
3c: 65 gs
3d: 48 rex.W
3e: 0f .byte 0xf
3f: c7 .byte 0xc7